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A parallel dc-dc circuit control method, system, electronic equipment and storage medium

A DC-DC, circuit control technology, applied in the control/regulation system, electrical components, regulating electrical variables, etc., can solve the problem of current unbalanced, etc., to achieve the effect of balanced output current, stable output voltage, and guaranteed dynamic response performance

Active Publication Date: 2021-12-07
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a parallel DC-DC circuit control method, system, electronic equipment and storage medium to solve the problem that the current of each DC-DC circuit in parallel connection of non-contact power supply vehicles cannot be balanced, and effectively realize stable output voltage and module uniformity. flow, and ensure the dynamic response performance of contactless powered vehicles

Method used

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  • A parallel dc-dc circuit control method, system, electronic equipment and storage medium
  • A parallel dc-dc circuit control method, system, electronic equipment and storage medium
  • A parallel dc-dc circuit control method, system, electronic equipment and storage medium

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Embodiment 1

[0051] This embodiment provides a method for controlling a parallel DC-DC circuit, image 3 Shows a flowchart of a parallel DC-DC circuit control method, the method is applied to non-contact power supply vehicles, such as image 3 As shown, the method includes the following steps:

[0052] Step S1, during the operation of the non-contact power supply vehicle, obtain the DC bus voltage, the DC bus current, and the actual output current i of each DC-DC circuit connected in parallel to the DC bus of the non-contact power supply vehicle in real time out1 …i outn .

[0053] Step S2, using the droop control strategy to obtain the calculation formula of the expected value of the output current of the DC-DC circuit, the expected value of the output current of each DC-DC circuit balances the output current of each DC-DC circuit.

[0054] Step S3. Calculate the expected value of the open-circuit voltage at the output end of each DC-DC circuit according to the calculation formula of t...

Embodiment 2

[0097] Corresponding to Embodiment 1, this embodiment provides a parallel DC-DC circuit control system, which is applied to non-contact power supply vehicles, such as Figure 12 As shown, the system includes:

[0098] An acquisition module, configured to obtain in real time the DC bus voltage, the DC bus current, and the actual output current of each DC-DC circuit connected in parallel to the DC bus of the contactless power supply vehicle during the operation of the non-contact power supply vehicle;

[0099] The first calculation module is used to obtain the calculation formula of the expected value of the output current of each DC-DC circuit by using the droop control strategy, and the expected value of the output current of each DC-DC circuit balances the output current of each DC-DC circuit;

[0100] The second calculation module is used to calculate the expected value of the open circuit voltage at the output end of each DC-DC circuit according to the calculation formula o...

Embodiment 3

[0104] This embodiment provides an electronic device, which includes a memory and a processor, where a computer program is stored on the memory, and when the computer program is executed by the processor, the method for controlling a parallel DC-DC circuit according to the first embodiment is implemented.

[0105] The processor in this embodiment may be an Application Specific Integrated Circuit (ASIC for short), a Digital Signal Processor (DSP for short), a Digital Signal Processing Device (DSPD for short), a programmable A logic device (ProgrammableLogic Device, referred to as PLD), a field programmable gate array (Field Programmable Gate Array, referred to as FPGA), a controller, a microcontroller, a microprocessor or other electronic components are used to implement the parallel connection in the above-mentioned embodiment DC-DC circuit control method. For the method implemented when the computer program running on the processor is executed, reference may be made to the sp...

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Abstract

The present invention provides a parallel DC-DC circuit control method, system, electronic equipment, and storage medium, which are applied to non-contact power supply vehicles. The method includes: acquiring DC bus voltage in real time, DC bus current, and the actual output current of each DC-DC circuit connected in parallel on the DC bus of the non-contact power supply vehicle; using the droop control strategy to calculate the expected value of the output current of each DC-DC circuit; according to each DC-DC circuit The expected value of the output current of the DC circuit, calculate the expected value of the open circuit voltage of each DC-DC circuit output end; according to the expected value of the open circuit voltage of the output end of each DC-DC circuit and the actual output current of each DC-DC circuit, carry out the voltage current Double closed-loop control to obtain the modulated wave used to control each DC-DC circuit. The invention can deal with the current equalizing and voltage stabilizing control in real time under the constantly changing condition of the vehicle load.

Description

technical field [0001] The invention relates to the technical field of non-contact power supply vehicles, in particular to a parallel DC-DC circuit control method, system, electronic equipment and storage medium. Background technique [0002] There are multiple parallel output DC-DC circuits (such as Boost circuits) on the non-contact power supply vehicle, and the resistance on the output lines of each DC-DC circuit is different, so the current flowing through each DC-DC circuit cannot be adjusted. Balanced, which will lead to unstable output voltage on the output line and uneven current of the module, which cannot guarantee the dynamic response performance of the non-contact power supply vehicle. Since the traditional double closed-loop control of voltage and current does not take into account the impedance on the output line, it is unavoidable that the current of each Boost circuit cannot be balanced when controlling the power supply of the non-contact power supply vehicle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/00H02M1/08
CPCH02M1/08H02M3/00H02M1/009
Inventor 周振邦刘华东王跃彭赟梅文庆文宇良李程乐文韬黄超孙璐
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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