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Efficient pulse width modulation method of energy storage system

A pulse width modulation, energy storage system technology, applied in the output power conversion device, electrical components, AC power input conversion to DC power output and other directions, can solve the problem of large current stress of switching devices, reduced system work efficiency, and conduction loss. Large and other problems, to achieve the effect of reducing power loss, optimal efficiency, and good economic use value

Active Publication Date: 2021-07-27
JIANGSU RCT POWER ENERGY TECH CO LTD
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Problems solved by technology

[0002] At present, the new energy industry is developing rapidly. In order to use energy reasonably and improve energy utilization, energy storage systems are often equipped. For energy storage systems, whether it is charging or discharging, all charging and discharging The current must flow through the respective switching devices, resulting in large current stress of the switching devices, large conduction loss and other power loss, which reduces the overall working efficiency of the system

Method used

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  • Efficient pulse width modulation method of energy storage system
  • Efficient pulse width modulation method of energy storage system
  • Efficient pulse width modulation method of energy storage system

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Embodiment Construction

[0023] like figure 1 As shown, a high-efficiency pulse width modulation method for an energy storage system is used for pulse width modulation of an energy storage system. The energy storage system includes a topology circuit module connected in sequence, an ADC interrupt sampling processing module 1, and an interrupt loop control module 2 , Interrupt modulation control module 3, the topology circuit module includes a number of switching devices, the interrupt modulation control module 3 adopts an existing SPWM control chip, and the interrupt loop control module 2 includes a phase-locked loop PLL, a PR controller, and a regulator PI;

[0024] Among them, the topology circuit module, ADC interrupt sampling processing module 1, interrupt loop control module 2, and interrupt modulation control module 3 in the energy storage system are all existing circuit modules, and the switching device is connected to the single-chip microcomputer through the interrupt modulation control module...

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Abstract

The invention provides an efficient pulse width modulation method of an energy storage system, which can effectively reduce power loss and improve the overall working efficiency of the system. After power-on, the energy storage system starts the ADC interrupt sampling processing module to sample the commercial power, and the control of the energy storage system is realized through the phase locking of the voltage of the commercial power. The ADC interrupt sampling processing module judges whether the alternating current instantaneous voltage is smaller than a set value or not in real time, if yes, the ADC interrupt sampling processing module sends sampling data to the interrupt loop control module for data processing, sends a response instruction to the interrupt modulation control module, and judges and selects a pulse width modulation mode that the circulation path of a current follow current loop passes through the switching device body, and if not, the ADC interrupt sampling processing module controls to switch to the pulse width modulation mode that the circulation path of the current follow current loop passes through the switching device body diode in the energy storage system through the interruption modulation control module.

Description

technical field [0001] The invention relates to the technical field of pulse width modulation, in particular to an efficient pulse width modulation method for an energy storage system. Background technique [0002] At present, the new energy industry is developing rapidly. In order to use energy reasonably and improve energy utilization, energy storage systems are often equipped. For energy storage systems, whether it is charging or discharging, all charging and discharging The current must flow through the respective switching devices, resulting in large current stress of the switching devices, large conduction loss and other power losses, which reduces the overall working efficiency of the system. Contents of the invention [0003] In view of the above problems, the present invention provides a high-efficiency pulse width modulation method of an energy storage system, which can effectively reduce power loss and improve the overall working efficiency of the system. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/5395
CPCH02M7/5395
Inventor 石发成李白龙洪德映王福梅朱乔
Owner JIANGSU RCT POWER ENERGY TECH CO LTD
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