Abstract

The present invention is directed to high temperature energy storage arrangements that utilize electrical heating elements for charging a carbon-based heat retaining core. A high temperature electrically isolating support element is used to support a resistive heating element. The components are designed for extended life in a high temperature thermal core with frequent thermal cycling. The heat retaining core is of graphite or carbon based material that is electrically conductive. The electrically isolating support element reduces leakage current losses while providing high mechanical strength and effective heat transfer from the resistive heating element to the heat retaining core. The contact surface of the electrically isolating support element and the resistive heating element is limited while still providing effective mechanical support. The support element and heating element engage in a manner to locate and position the support element on the heating element.

IPC Classes  ?

• H05B 3/16 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base
• H05B 3/14 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic

Goods & Services

(1) Energy storage and conversion equipment, namely, heat accumulators for temporary storage of energy, thermal based power generators, boilers, and integrated thermal storage and power generation systems for the delivery of high temperature fluid and steam; central heating boilers; central heating radiators; heating systems; electric heating systems. (1) Operation of thermal energy facilities; operation of thermal energy facility, namely, management of thermal energy production, processing, treatment, storage and distribution facilities; Operation of electric energy facilities; operation of electric energy facility, namely, management of electric energy production, processing, treatment, storage and distribution facilities. (2) Construction and maintenance of thermal energy facilities processing, treatment, storage and distribution facilities; Construction and maintenance of thermal energy, meters and regulating stations; Construction and maintenance of electricity storage plants and associated equipment; Construction and maintenance of energy facilities, namely, processing, treatment, storage and distribution facilities; Construction and maintenance of electrical energy, meters and regulating stations; Heating contractor services; design, installation, maintenance and repair of electric heating systems; advisory services relating to the installation of electric heating systems; design, installation, maintenance and repair of HVAC systems. (3) Transmission and distribution of electricity; transmission and distribution of thermal energy; transmission and distribution of electric heat.

Abstract

An energy transportation and grid support system utilizes at least one transportable containment module capable of storing thermal or chemical energy typically produced from renewable or geothermal sources and providing connectivity with energy conversion equipment typically located in a land or sea-based operating facility. The system includes circuitry to hookup to an adjacent electricity grid for the provision of grid support and/or piping to move thermal energy typically used to drive steam turbines generating electricity. The operating facility also includes a communication arrangement to link with and exchange operations control data with a grid or heating operator and the energy transportation operator. The invention is directed to both apparatus and method for the energy transportation and grid support system.

IPC Classes  ?

• F28D 17/00 - Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
• B60L 1/02 - Supplying electric power to auxiliary equipment of electrically-propelled vehicles to electric heating circuits
• B60L 7/06 - Dynamic electric resistor braking for vehicles propelled by AC motors
• B60L 7/14 - Dynamic electric regenerative braking for vehicles propelled by AC motors
• B60L 7/22 - Dynamic electric resistor braking, combined with dynamic electric regenerative braking
• B60T 1/10 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
• B60T 13/58 - Combined or convertible systems
• B61H 9/06 - Brakes characterised by, or modified for, their application to special railway systems or purposes for storing energy during braking action
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F28D 20/02 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or using latent heat
• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02S 10/20 - Systems characterised by their energy storage means
• F28F 21/02 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite

Goods & Services

Generation of power through operation of thermal energy power generation facilities; Generation of power through operation of thermal energy facilities, namely, thermal energy production, processing, and treatment facilities; Generation of power through operation of electric energy facilities Energy storage and conversion equipment, namely, electric power generators using thermal energy stored in heat accumulators, thermal based power generators, namely fluid based heat transfer systems for power generation, and power generation systems comprised primarily of electric heaters and heat accumulators, power generators for the delivery of high temperature fluid and steam; steam operated power generators for the delivery of high temperature fluid and steam Energy storage and conversion equipment, namely, heat accumulators for temporary storage of energy, electrical heaters for heating heat accumulators, electrical heaters and heat accumulators sold as a unit, industrial boilers, and thermal energy storage plants for power generation for the delivery of high temperature fluid and steam; central heating boilers; central heating radiators; heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; electric heating systems for residential and commercial buildings comprised of electric radiators Business operation of thermal energy facilities; operation of thermal energy facility, namely, management of thermal energy production, processing, treatment, storage and distribution facilities for others; Business operation of electric energy facilities; operation of electric energy facility, namely, business management of electric energy production, processing, treatment, storage and distribution facilities for others Construction and maintenance of thermal energy facilities processing, treatment, storage and distribution facilities; Construction and maintenance of thermal energy generation plants, power meters and regulating stations for thermal energy generation plants; Construction and maintenance of electricity storage plants and associated equipment; Construction and maintenance of energy facilities, namely, processing, treatment, storage and distribution facilities; Construction and maintenance of electrical energy generation plants, power meters and regulating stations for electrical energy generation plants; Heating contractor services; design, installation, maintenance and repair of electric heating systems; advisory services relating to the installation of electric heating systems; design, installation, maintenance and repair of HVAC systems Supplying, storage and distribution of thermal energy Engineering services for facilities management of thermal energy production, processing, treatment, storage and distribution facilities; design of electric heating systems; design of HVAC systems

Abstract

The present invention is directed to high temperature energy storage arrangements that utilize electrical heating elements for charging a carbon-based heat retaining core. A high temperature electrically isolating support element is used to support a resistive heating element. The components are designed for extended life in a high temperature thermal core with frequent thermal cycling. The heat retaining core is of graphite or carbon based material that is electrically conductive. The electrically isolating support element reduces leakage current losses while providing high mechanical strength and effective heat transfer from the resistive heating element to the heat retaining core. The contact surface of the electrically isolating support element and the resistive heating element is limited while still providing effective mechanical support. The support element and heating element engage in a manner to locate and position the support element on the heating element.

IPC Classes  ?

• H05B 3/06 - Heater elements structurally combined with coupling elements or with holders
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• H05B 3/14 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
• H05B 3/40 - Heating elements having the shape of rods or tubes

Abstract

The present invention is directed to high temperature energy storage arrangements that utilize electrical heating elements for charging a carbon-based heat retaining core. A high temperature electrically isolating support element is used to support a resistive heating element. The components are designed for extended life in a high temperature thermal core with frequent thermal cycling. The heat retaining core is of graphite or carbon based material that is electrically conductive. The electrically isolating support element reduces leakage current losses while providing high mechanical strength and effective heat transfer from the resistive heating element to the heat retaining core. The contact surface of the electrically isolating support element and the resistive heating element is limited while still providing effective mechanical support. The support element and heating element engage in a manner to locate and position the support element on the heating element.

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• H05B 3/06 - Heater elements structurally combined with coupling elements or with holders
• H05B 3/14 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic

Abstract

A thermal energy storage system utilizes a high temperature storage segment having flow passages extending through the storage segment whereby a working fluid can extract energy from the storage system for powering conventional downstream equipment. A mixing manifold cooperates with an outlet manifold for reducing the temperature of the working fluid to a temperature safe for the downstream equipment. The mixing manifold, an outlet manifold, an inlet manifold and a support base for the high temperature storage segment, are all of a high temperature tolerant material allowing the high temperature storage segment to operate at temperatures in excess of 1000° C. and preferably to temperatures above 1400° C. The temperature of the working fluid provided to the conventional equipment can be managed to be below a maximum temperature which in many cases may be about 700° C.

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• B01F 25/42 - Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
• F28F 21/02 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
• F28F 21/04 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramicConstructions of heat-exchange apparatus characterised by the selection of particular materials of concreteConstructions of heat-exchange apparatus characterised by the selection of particular materials of natural stone
• G05D 23/13 - Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
• H05B 1/02 - Automatic switching arrangements specially adapted to heating apparatus

Abstract

In graphite based thermal storage units capable of operating at high temperatures, it is advantageous to have an inert nitrogen based atmosphere. Such large storage systems can be heated to temperatures in excess of 1500° C. using embedded graphite based electrical heating elements. In order to reduce possible loss of graphite, particularly from heating elements, small amounts of hydrocarbon gas is added. The preferred gas is ethylene.

IPC Classes  ?

• C09K 5/14 - Solid materials, e.g. powdery or granular
• C04B 35/83 - Carbon fibres in a carbon matrix
• F28F 21/02 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or

Abstract

In graphite based thermal storage units capable of operating at high temperatures, it is advantageous to have an inert nitrogen based atmosphere. Such large storage systems can be heated to temperatures in excess of 1500°C using embedded graphite based electrical heating elements. In order to reduce possible loss of graphite, particularly from heating elements, small amounts of hydrocarbon gas is added. The preferred gas is ethylene.

IPC Classes  ?

• C09K 5/14 - Solid materials, e.g. powdery or granular
• F24H 7/00 - Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or

Abstract

In graphite based thermal storage units capable of operating at high temperatures, it is advantageous to have an inert nitrogen based atmosphere. Such large storage systems can be heated to temperatures in excess of 1500.degree.C using embedded graphite based electrical heating elements. In order to reduce possible loss of graphite, particularly from heating elements, small amounts of hydrocarbon gas is added. The preferred gas is ethylene.

IPC Classes  ?

• C09K 5/14 - Solid materials, e.g. powdery or granular

Abstract

An energy transportation and grid support system utilizes at least one transportable containment module capable of storing thermal or chemical energy typically produced from renewable or geothermal sources and providing connectivity with energy conversion equipment typically located in a land or sea-based operating facility. The system includes circuitry to hookup to an adjacent electricity grid for the provision of grid support and/or piping to move thermal energy typically used to drive steam turbines generating electricity. The operating facility also includes a communication arrangement to link with and exchange operations control data with a grid or heating operator and the energy transportation operator. The invention is directed to both apparatus and method for the energy transportation and grid support system.

IPC Classes  ?

• F28D 17/00 - Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
• F28D 20/02 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or using latent heat
• H02S 10/20 - Systems characterised by their energy storage means
• B60T 1/10 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
• B60T 13/58 - Combined or convertible systems
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• B60L 1/02 - Supplying electric power to auxiliary equipment of electrically-propelled vehicles to electric heating circuits
• B60L 7/06 - Dynamic electric resistor braking for vehicles propelled by AC motors
• B60L 7/14 - Dynamic electric regenerative braking for vehicles propelled by AC motors
• B60L 7/22 - Dynamic electric resistor braking, combined with dynamic electric regenerative braking
• B61H 9/06 - Brakes characterised by, or modified for, their application to special railway systems or purposes for storing energy during braking action
• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• F28F 21/02 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite

Abstract

A thermal energy storage system utilizes a high temperature storage segment having flow passages extending through the storage segment whereby a working fluid can extract energy from the storage system for powering conventional downstream equipment. A mixing manifold cooperates with an outlet manifold for reducing the temperature of the working fluid to a temperature safe for the downstream equipment. The mixing manifold, an outlet manifold, an inlet manifold and a support base for the high temperature storage segment, are all of a high temperature tolerant material allowing the high temperature storage segment to operate at temperatures in excess of 1000°C and preferably to temperatures above 1400°C. The temperature of the working fluid provided to the conventional equipment can be managed to be below a maximum temperature which in many cases may be about 700°C.

IPC Classes  ?

• B01F 15/06 - Heating or cooling systems
• B01F 5/00 - Flow mixers; Mixers for falling materials, e.g. solid particles
• F24H 7/00 - Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F28F 21/02 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
• F28F 21/04 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramicConstructions of heat-exchange apparatus characterised by the selection of particular materials of concreteConstructions of heat-exchange apparatus characterised by the selection of particular materials of natural stone

Abstract

A thermal energy storage system utilizes a high temperature storage segment having flow passages extending through the storage segment whereby a working fluid can extract energy from the storage system for powering conventional downstream equipment. A mixing manifold cooperates with an outlet manifold for reducing the temperature of the working fluid to a temperature safe for the downstream equipment. The mixing manifold, an outlet manifold, an inlet manifold and a support base for the high temperature storage segment, are all of a high temperature tolerant material allowing the high temperature storage segment to operate at temperatures in excess of 1000°C and preferably to temperatures above 1400°C. The temperature of the working fluid provided to the conventional equipment can be managed to be below a maximum temperature which in many cases may be about 700°C.

IPC Classes  ?

• B01F 25/42 - Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
• B01F 35/222 - Control or regulation of the operation of the driving system, e.g. torque, speed or power of motorsControl or regulation of the position of mixing devices or elements
• B01F 35/93 - Heating or cooling systems arranged inside the receptacle
• F24H 7/00 - Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F28F 21/02 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
• F28F 21/04 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramicConstructions of heat-exchange apparatus characterised by the selection of particular materials of concreteConstructions of heat-exchange apparatus characterised by the selection of particular materials of natural stone

Goods & Services

energy storage and conversion equipment, namely, mobile electric power generators, thermal based power generators and integrated thermal storage and power generation systems for the delivery of high temperature fluid or steam energy storage and conversion equipment, namely, heat accumulators for temporary storage of energy installation and maintenance services for thermal energy storage and conversion systems; energy consulting in the field of construction of renewable energy storage facilities technological consultation, design and monitoring services for thermal energy storage and conversion systems; technological energy consulting and design services for power generation facilitating renewable energy storage; auxiliary design services for oil and gas production facilities

Goods & Services

(1) Energy storage and conversion equipment namely electric power converters, heat accumulators for temporary storage of energy, electric power generators, thermal based power generators, and integrated thermal storage and power generation systems for the delivery of high temperature fluid or steam. (1) Consultation, design, installation, monitoring and maintenance services for thermal energy storage and conversion systems; energy consulting and design services for power generation facilitating renewable energy storage facilities; and energy consulting and design services for oil and gas production facilities.

Goods & Services

Energy storage and conversion equipment, namely, heat accumulators for temporary storage of energy, thermal based power generators, and integrated thermal storage and power generation systems for the delivery of high temperature fluid and steam Technological consultation and engineering design services for thermal energy storage and conversion systems; renewable energy technological consulting and engineering design services for power generation facilitating renewable energy storage facilities; and renewable energy technological consulting and engineering design services for oil and gas production facilities; Electronic monitoring services for thermal energy storage and conversation systems using computers or sensors

Goods & Services

Energy storage and conversion equipment, namely, heat accumulators for temporary storage of energy, thermal based power generators, and integrated thermal storage and power generation systems for the delivery of high temperature fluid and steam Technological consultation and engineering design services for thermal energy storage and conversion systems; renewable energy technological consulting and engineering design services for power generation facilitating renewable energy storage facilities; and renewable energy technological consulting and engineering design services for oil and gas production facilities; Electronic monitoring services for thermal energy storage and conversation systems using computers or sensors

Goods & Services

(1) Energy storage and conversion equipment namely electric power converters, heat accumulators for temporary storage of energy, electric power generators, thermal based power generators, and integrated thermal storage and power generation systems for the delivery of high temperature fluid or steam. (1) Consultation, design, installation, monitoring and maintenance services for thermal energy storage and conversion systems; energy consulting and design services for power generation facilitating renewable energy storage facilities; and energy consulting and design services for oil and gas production facilities.

Goods & Services

(1) Energy storage and conversion equipment namely electric power converters, heat accumulators for temporary storage of energy, electric power generators, thermal based power generators, and integrated thermal storage and power generation systems for the delivery of high temperature fluid or steam. (1) Consultation, design, installation, monitoring and maintenance services for thermal energy storage and conversion systems; energy consulting and design services for power generation facilitating renewable energy storage facilities; and energy consulting and design services for oil and gas production facilities.

Goods & Services

Consultation concerning the storage of energy in thermal energy storage and conversion systems; energy consulting services concerning the storage of energy for power generation facilitating renewable energy storage facilities; and energy consulting concerning the storage of energy for oil and gas production facilities

Abstract

An energy transportation and grid support system utilizes at least one transportable containment module capable of storing thermal or chemical energy typically produced from renewable or geothermal sources and providing connectivity with energy conversion equipment typically located in a land or sea-based operating facility. The system includes circuitry to hookup to an adjacent electricity grid for the provision of grid support and/or piping to move thermal energy typically used to drive steam turbines generating ′ electricity. The operating facility also includes a communication arrangement to link with and exchange operations control data with a grid or heating operator and the energy transportation operator. The invention is directed to both apparatus and method for the energy transportation and grid support system.

IPC Classes  ?

• F28D 20/02 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or using latent heat
• B60L 7/06 - Dynamic electric resistor braking for vehicles propelled by AC motors
• B60L 7/14 - Dynamic electric regenerative braking for vehicles propelled by AC motors
• B60L 7/22 - Dynamic electric resistor braking, combined with dynamic electric regenerative braking
• B61H 9/06 - Brakes characterised by, or modified for, their application to special railway systems or purposes for storing energy during braking action
• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• B60L 1/02 - Supplying electric power to auxiliary equipment of electrically-propelled vehicles to electric heating circuits
• H02S 10/20 - Systems characterised by their energy storage means
• B60T 1/10 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
• B60T 13/58 - Combined or convertible systems
• F28F 21/02 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite

Abstract

An improved control arrangement is used in a high power rectifier and comprises two or more power controllers ganged together in parallel. Each power controller rectifies an AC voltage signal using zero voltage crossing switching to produce a binary switched signal and each power controller is connected to an independent connectable load. Each power controller includes a fast acting binary power switch that selectively connects the respective independent connectable load to the rectified AC voltage signal. The control arrangement selectively activates the power controllers to define a desired connected load. This high power rectifier and control arrangement is advantageously used to provide fast up down power regulation to a grid by selective storage of thermal energy and deriving power from the thermal energy storage system to add fill in power to the grid.

IPC Classes  ?

• H02J 15/00 - Systems for storing electric energy
• B60L 1/04 - Supplying electric power to auxiliary equipment of electrically-propelled vehicles to electric heating circuits fed by the power supply line
• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
• B61H 9/06 - Brakes characterised by, or modified for, their application to special railway systems or purposes for storing energy during braking action
• B60T 1/10 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
• B60T 13/58 - Combined or convertible systems
• H02M 7/06 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• B60L 3/00 - Electric devices on electrically-propelled vehicles for safety purposesMonitoring operating variables, e.g. speed, deceleration or energy consumption
• B60L 8/00 - Electric propulsion with power supply from forces of nature, e.g. sun or wind
• B60L 11/18 - using power supplied from primary cells, secondary cells, or fuel cells
• B60L 15/00 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train

Goods & Services

(1) Energy storage and conversion equipment namely electric power converters, heat accumulators for temporary storage of energy, electric power generators, thermal based power generators, and integrated thermal storage and power generation systems for the delivery of high temperature fluid or steam. (1) Consultation, design, installation, monitoring and maintenance services for thermal energy storage and conversion systems; energy consulting and design services for power generation facilitating renewable energy storage facilities; and energy consulting and design services for oil and gas production facilities.

Abstract

An improved control arrangement is used in a high power rectifier and comprises two or more power controllers ganged together in parallel. Each power controller rectifies an AC voltage signal using zero voltage crossing switching to produce a binary switched signal and each power controller is connected to an independent connectible load. Each power controller includes a fast acting binary power switch that selectively connects the respective independent connectible load to the rectified AC voltage signal. The control arrangement selectively activates the power controllers to define a desired connected load. This high power rectifier and control arrangement is advantageously used to provide fast up down power regulation to a grid by selective storage of thermal energy and deriving power from the thermal energy storage system to add fill in power to the grid.

IPC Classes  ?

• B60L 7/06 - Dynamic electric resistor braking for vehicles propelled by AC motors
• B60L 7/14 - Dynamic electric regenerative braking for vehicles propelled by AC motors
• B60L 7/22 - Dynamic electric resistor braking, combined with dynamic electric regenerative braking
• B61H 9/06 - Brakes characterised by, or modified for, their application to special railway systems or purposes for storing energy during braking action
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• H02J 15/00 - Systems for storing electric energy
• H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
• H02M 7/04 - Conversion of AC power input into DC power output without possibility of reversal by static converters