单相PWM整流器设计

发布时间：2018-05-12 00:31

本文选题：单相PWM整流器 + 虚拟电流　；参考：《电机与控制学报》2014年08期

【摘要】：针对目前非线性化负载大量使用引起电网谐波和无功污染日益严重的问题,设计对电网污染很小的单相PWM整流器。通过建立和分析单相电压型PWM整流器的拓扑结构和数学模型,给出了该系统的电压、电流双闭环控制方法。该方法采用构造虚拟电流的方法进行电流内环的解耦控制,并通过分析系统的瞬时有功、无功功率流以实现电压外环的线性化控制。对系统进行基于Matlab/SIMULINK的仿真分析,并进行硬件设计,搭建整流器实验模型,以进行实验验证。仿真和实验结果验证了该电压、电流双闭环控制方法的可行性,同时表明单相PWM整流器具有网侧单位功率因素运行、网侧电流正弦化、直流输出电压纹波小等优点,对电网的谐波和无功污染很小。
[Abstract]:Aiming at the serious problem of harmonic and reactive power pollution caused by the extensive use of nonlinear load, a single-phase PWM rectifier with little pollution to the power network is designed. By establishing and analyzing the topology and mathematical model of single-phase voltage source PWM rectifier, the double closed loop control method of voltage and current is given. In this method, the method of constructing virtual current is used to decouple the current inner loop, and by analyzing the instantaneous active and reactive power flow of the system, the linearization control of the voltage outer loop is realized. The system is simulated and analyzed based on Matlab/SIMULINK, the hardware is designed, and the rectifier experimental model is built to verify the experiment. The simulation and experimental results verify the feasibility of the double closed loop control method for voltage and current. It is also shown that the single-phase PWM rectifier has the advantages of unit power factor running on the grid side, sinusoidal current on the grid side, small ripple of DC output voltage, etc. The harmonic and reactive power pollution is very small.
【作者单位】：浙江大学电气工程学院;卧龙电气集团杭州研究院有限公司;
【基金】：国家863项目(2011AA11A101)
【分类号】：TM461

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