Switched Control of Three-Phase Voltage Source Pulsewidth-Modulated Rectifier Under Dynamic Load: Output Feedback and Robustness
Switched Control of Three-Phase Voltage Source Pulsewidth-Modulated Rectifier Under Dynamic Load: Output Feedback and Robustness
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DOI：
10.1115/1.4034074
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发表时间：
2016-12
影响因子：
1.7
通讯作者：
Zhaowu Ping;Hao Tang;Junguo Lu;Xueying Gao;Qi Tan
中科院分区：
文献类型：
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作者：
Zhaowu Ping;Hao Tang;Junguo Lu;Xueying Gao;Qi Tan
三相电压源脉宽调制整流器在工业应用中受到了广泛的关注。近年来，人们对三相电压发生器在动态负载下采用开关控制的柔性直流母线稳压问题进行了一些研究。针对不同的负载电阻范围设计了多个比例积分（PI）控制器，而将负载电阻作为开关律，在给定的时间瞬间只实现一个PI控制器。然而，现有的方法是基于状态反馈控制，需要测量源电流和直流母线电压。在本文中，我们将采用输出反馈控制方案，即只测量直流母线电压。与现有的结果相比，我们的设计需要更少的信息，降低了成本。此外，给出了在所有状态都可用的情况下，系统参数的鲁棒性分析。仿真结果验证了设计的有效性。
Three-phase voltage source pulsewidth-modulated (PWM) rectifiers (VSRs) have received great attentions in industrial applications. Recently, some attempt has been made to study the flexible direct current (DC)-bus voltage regulation problem under dynamic load of three-phase VSRs by switched control. Several proportional-integral (PI) controllers are designed for different load resistance range while only one PI controller is implemented for a given time instant by regarding the load resistance as the switching law. However, the existing approach is based on state feedback control, which requires the measurement of source current and DC-bus voltage. In this paper, we will adopt an output feedback control scheme, i.e., only DC-bus voltage should be measured. Compared with the existing result, our design requires less information and reduces the cost. Moreover, the robustness analysis of plant parameters is given when all the states are available. Simulation results demonstrate the effectiveness of our design.