双同步坐标系锁相环在AC-LINK充电电源中的应用

武靖昊; 刘庆想; 张政权; 王邦继; 李伟

doi:10.11884/HPLPB201830.170459

双同步坐标系锁相环在AC-LINK充电电源中的应用

doi: 10.11884/HPLPB201830.170459

西南交通大学物理科学与技术学院, 成都 610031

基金项目:

中央高校基本科研业务费专项资金项目 2682014CX090

详细信息

作者简介:
武靖昊(1993—)男，硕士，从事开关电源及控制技术研究；wujinghao66@163.com

通讯作者:
张政权(1983—)男，博士，副研究员，从事脉冲功率技术和能量变换与控制技术研究；zhangzhengquan8@163.com

中图分类号: TP202
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- 被引次数: 0
出版历程
- 收稿日期: 2017-11-13
- 修回日期: 2018-01-12
- 刊出日期: 2018-05-15

Application of dual synchronous coordinate phase-locked loop in AC-link charging power supply

School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China

摘要

摘要: 为提高电源在电网非理想输入情况下工作的适应性，采用解耦双同步坐标系下的三相锁相环，能够获取电网电压的相位与频率信息，并通过FIR滤波环节提取输入线电压的基波幅值，及时准确地为电源提供控制参数。建立了Matlab/Simulink仿真模型，在三相输入不平衡、频率变化、电压畸变等情况下进行仿真，并基于DSP2812芯片编写了控制程序进行测试。仿真与实验结果表明：在各种电网输入情况下，该方法都能够准确提取输入线电压的幅度、相位以及频率信息，为电源的良好运行提供保障。
- 高频交流链接技术 /
- 锁相环 /
- 双同步参考坐标系 /
- 滤波
Abstract: Charging power based on HF AC-Link technology can be used as a primary power source for high-power microwave systems. In order to improve the adaptability of the power supply in the power grid with non-ideal input, this paper adopts the three-phase phase-locked loop in the decoupled double synchronous coordinate system to obtain the phase and frequency information of the positive sequence voltage. To extract the input line voltage amplitude of the fundamental wave, this paper uses the FIR filter to provide timely and accurate control parameters for the power supply. The model was established by Matlab/Simulink software, and the simulation was carried out under the condition of three-phase input imbalance, frequency change and voltage distortion. Lastly, a control program was written and tested based on DSP2812. The simulation and experimental results show that the method can accurately extract the amplitude, phase and frequency information of the input line voltage in all kinds of grid input, and provide a guarantee for good operation of the power supply.
- HF AC-link /
- phase-locked loop /
- dual synchronous coordinate system /
- filter

HTML全文

图 1 AC-link充电电源结构

Figure 1. Structure of AC-link power supply

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图 2 AC-link充电电源的12个工作区间

Figure 2. 12 working areas of AC-link power supply

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图 3 DDSRF-SPLL向量图

Figure 3. Phasor diagram of DDSRF-SPLL

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图 4 DDSRF-SPLL原理图

Figure 4. Principle diagram of DDSRF-SPLL

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图 5 存在谐波时DDSRF-SPLL仿真结果

Figure 5. Simulation results of DDSRF-SPLL with harmonic

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图 6 FIR滤波器仿真结果

Figure 6. Simulation result of FIR

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图 7 硬件结构框图

Figure 7. System hardware structure

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图 8 硬件测试结果

Figure 8. Hardware test results

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