Abstract：In traditional control of AC-DC-AC PWM converter, the sudden change of the motor results in the fluctuating of the dc-link voltage. In order to maintain the dc-link voltage, a big capacitor is added, however, affecting the dynamics of the system. Considering the dc-link voltage and the dynamics, a new co-control strategy is given in this paper. With the control of the dc-link capacitor, the current out of the converter side can equal to that in the inverter side, which not only reduce the dc-link capacitor, but also improves the dynamics of the system. For further research in the control strategy, the small-signal model is introduced for study of the robustness and dynamics of the system.
戴鹏, 朱方田, 朱荣伍, 陈根. 电容电流直接控制的双PWM协调控制策略[J]. 电工技术学报, 2011, 26(1增): 136-141.
Dai Peng, Zhu Fangtian, Zhu Rongwu, Chen Gen. Direct Control of Capacitor Current for AC-DC-AC PWM Converter. Transactions of China Electrotechnical Society, 2011, 26(1增): 136-141.
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