Simplified Model and Control Strategy of Three-Phase PWM Current Source Rectifiers for DC Voltage Power Supply Applications
Simplified Model and Control Strategy of Three-Phase PWM Current Source Rectifiers for DC Voltage Power Supply Applications
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DOI：
10.1109/jestpe.2015.2421339
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发表时间：
2015-04
影响因子：
5.5
通讯作者：
Yu Zhang;Y. Yi;Peimeng Dong;Fangrui Liu;Y. Kang
中科院分区：
文献类型：
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作者：
Yu Zhang;Y. Yi;Peimeng Dong;Fangrui Liu;Y. Kang
三相脉宽调制（PWM）电流源整流器（CSR）作为直流电压源，其直流母线上含有电容器以获得直流输出电压，这增加了系统的复杂性和控制策略的复杂性。在本文中，三相PWM CSR的动态模型，首先建立在dq旋转框架的容性负载的应用。通过将交流电容电压的矢量与d轴对齐，CSR的模型可以被简化并解耦为直流侧和交流侧电路，这两个电路可以单独控制。基于该模型，提出了一种由直流侧状态变量反馈控制和交流侧主动阻尼控制相结合的控制策略。此外，单位的CSR的功率因数是通过调节桥电流的q分量来实现的。仿真和实验结果验证了所提出的控制策略的动态和静态性能。
Three-phase pulsewidth modulation (PWM) current source rectifiers (CSRs) that applied as dc voltage power supply include capacitors in the dc bus to obtain dc output voltage, which increase the system complexity and complicate the control strategy. In this paper, a dynamic model of the three-phase PWM CSR is first established in the dq-rotating frame for capacitive load applications. By aligning the vector of the ac capacitor voltage to the d-axis, the model of the CSR can be simplified and decoupled into dc and ac side circuits, which can be controlled separately. Based on this model, a control strategy composed of a state-variable feedback control method for the dc side and an active-damping control method for the ac side is proposed. Moreover, a unity power factor of the CSR is achieved by regulating the q component of the bridge currents. Simulation and experimental results are presented to validate the dynamic and static performance of the proposed control strategy.