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中文摘要：
电压定向的矢量控制是PWM整流器常用的控制策略,本文在此控制策略基础上进行改进,建立无电压传感器的矢量控制模型。采用类似异步电机磁链观测的方式构造磁链矢量观测磁链,依据磁链矢量和电压矢量的关系获得电压矢量的角度,以达到省掉交流电压传感器,降低成本的目的。设计了电压角度观测器,并在MATLAB/simulink环境下构造了磁链观测电压定向的PWM整流器矢量控制仿真模型,验证了观测的可实现性和控制的良好性能。
英文摘要：
Voltage oriented vector control is a common control strategy of PWM rectifier. This paper is aimed at improving this strategy, designs a vector control model without line voltage sensors, constructs a virtual line flux as the asynchronous motor flux, and obtains the angle of the voltage vector based on the relationship between the voltage and flux vector, in order to eliminated the AC voltage sensors and reduce the cost of PWM rectifiers. The voltage angle observer and the simulation model are designed on the basis of virtual flux and line voltage oriented vector control of PWM rectifiers using MATLAB/ simulink, and tests verify the reliability and good condition of the observer.
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