矩阵整流器单周期控制策略的研究

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Abstract One-cycle control (OCC) is a kind of nonlinear control technique which integrates modulation algorithm and control strategy. Power converters using OCC have many advantages, such as simply control circuit, fast dynamic response and good immunity on input disturbance. Based on the analysis of operation principle of OCC and matrix rectifier, one kind of three-phase input current OCC strategy is proposed, which makes the three-phase input current to achieve balance in a switching cycle, and to realize unity input power factor. In order to make up the insufficiency of OCC on load disturbance suppression, a PID controller is added on output voltage control to improve load regulation. After completing the system simulation of OCC on matrix rectifier in Matlab/Simulink, one physical matrix rectifier system is realized using the digital integral technology and a new bootstrap power supply. The simulation analysis results and the experimental results prove theoretical analysis on the OCC model of matrix rectifier, and the control effects are satisfactory.

Key words： Matrix rectifier one-cycle control PID control digital integral bootstrap power supply

Received: 31 August 2009 Published: 19 March 2014

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TM461

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