Hybrid energy storage-based regenerative electric energy recovery utilization experiment system

A technology for electric energy recovery and energy storage systems, applied in flexible AC transmission systems, collectors, electric vehicles, etc., can solve the problems of redundant capacity and poor economy of energy storage systems, achieve good verification, improve stability, reduce The effect of uncertainty

Inactive Publication Date: 2018-08-21
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high power and high energy characteristics of regenerative electric energy, commonly used control strategies tend to lead to large capacity redundancy in the energy storage system, and the economy is poor, so it is difficult to effectively promote it in practical applications.

Method used

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  • Hybrid energy storage-based regenerative electric energy recovery utilization experiment system

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Embodiment Construction

[0014] Such as figure 1 As shown, a regenerative electric energy recovery and utilization experimental system based on hybrid energy storage includes a DC power supply 10, a first bidirectional DC / DC converter 201, a second bidirectional DC / DC converter 202, and a third bidirectional DC / DC converter 203 , the first lithium battery energy storage system 301 , the second lithium battery energy storage system 302 , the supercapacitor energy storage system 303 , the DC braking resistor cabinet 40 , and the upper computer control system 50 .

[0015] The input side of the DC power supply 10 is connected to a three-phase 220V mains, and when the mains is stable, the output side is a DC 538V DC bus platform; the DC power supply 10 is a unidirectional power supply, and electric energy flows from the three-phase mains to The DC bus, the energy of the DC bus cannot be fed back to the three-phase mains. The rated power of the first bidirectional DC / DC converter 201 , the second bidirect...

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Abstract

A hybrid energy storage-based regenerative electric energy recovery utilization experiment system is disclosed and comprises a direct current power source, a regenerative electric energy simulation system, a hybrid energy storage system, a direct current braking resistor cabinet and a host computer control system, wherein an input side of the direct current power source is connected with three phase mains supply, a connection platform for a direct current bus is formed on an output side, the regenerative electric energy simulation system comprises a first bidirectional DC/DC converter and a first lithium battery energy storage system, and a high-voltage side of the first bidirectional DC/DC converter is connected with two ends of the direct current bus while a low-voltage side is connectedwith the first lithium battery energy storage system; the host computer control system is in connection and communication with the first bidirectional DC/DC converter, a second bidirectional DC/DC converter and a third bidirectional DC/DC converter. The system is advantageous in that control effects exerted by control strategies in an actual system can be well verified.

Description

technical field [0001] The invention relates to the technical field of regenerative electric energy recovery, in particular to an experimental system for regenerative electric energy recovery and utilization based on hybrid energy storage. Background technique [0002] At present, rail transit and elevators generally adopt the combination of DC power supply and variable voltage and frequency conversion to provide the electric energy required by the motor. When in the braking state, the motor can convert mechanical energy into electrical energy, and feed back the electrical energy to the DC power supply network through the variable voltage and frequency inverter. This part of energy generally accounts for more than 20% of the system's energy consumption. The regenerative power will increase the DC bus voltage and affect the safe operation of the system. The traditional way is to use resistance dissipation to suppress the voltage rise, but this causes a great waste of regenera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J7/34H02P3/24
CPCH02J3/32H02J7/345H02P3/24Y02E40/10
Inventor 林仕立宋文吉冯自平
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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