电容电流反馈单相逆变器控制

2015 International Conference on Power and Advanced Control Engineering (ICPACE) Pub Date : 2015-08-01 DOI:10.1109/ICPACE.2015.7274984

K. B. Bommegowda, K. Vishwas, K. Suryanarayana, N. Renukappa

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引用次数: 4

摘要

提出了一种基于改进单极开关的单相正弦脉宽调制(SPWM)逆变器控制方法。实现了电容电流反馈作为内环和输出电压反馈作为外环两个回路。推导了功率级的数学模型和状态空间分析，并应用于反馈补偿器的设计。利用MATLAB和Simulink对两个反馈回路的补偿器进行了设计和验证。给出了一个1kVA SPWM逆变器的仿真结果。采用所设计的PI补偿器，系统对线性和非线性负载均具有稳定的输出电压和良好的暂态响应。对于700W负载步长，输出电压恢复时间小于0.5ms。

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Single phase inverter control with capacitor current feedback

In this paper, single phase sinusoidal pulse width modulated (SPWM) inverter control with modified unipolar switching is presented. The two loops namely, capacitor current feedback as inner loop and output voltage feedback as outer loop were implemented. The mathematical model and state space analysis of power stage is derived and used to design the feedback compensators. The compensators for the two feedback loops are designed and verified using MATLAB and Simulink. The simulation results for a 1kVA SPWM inverter are presented. With the designed PI compensators, the system exhibits stable output voltage and good transient response for linear and non linear loads. For 700W load step, the output voltage recovers in a time less than 0.5ms.

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2015 International Conference on Power and Advanced Control Engineering (ICPACE)

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