健;海德伦;郑州大学电气工程学院,郑州大学电气

传统整流方式常采用相控整流或不控整流方式。相控整流方式存在动态响应慢、深控下网侧功率因数低等缺点。不控整流方式也存在整流器从电网吸取畸变的电流,造成电网的谐波污染,直流侧能量无法回馈电网等缺点。三相电压型PWM整流器可以克服相控和不控整流的缺点,具有高功率因数、低电流谐波、电能可逆、动态响应快等优点。介绍了空间电压矢量脉宽调制(SVPWM)的控制原理及实现步骤。探讨了三相电压型脉宽调制整流器的应用范围。

Three-phase Voltage Rectifier Based on SVPWM Control Technique and Its Application

Traditional rectification way often adopts phase control rectification or non-control rectification ways.The phase control rectification has disadvantages of slow dynamic response and low network side power factorin deep control.The non-control rectification also has the rectifier getting distortion current from the electric network,lead to harmonic pollution of the network and eneryy of direct current side can not feed to the network.Three phase voltage PWM rectifier can overcome disadvantages of phase control and non-control rectification and has advantages of high power factor,low current harmonic,electric energy reciprocity and dynamic response.The control principle of SVPWM is presented.Application of three phase voltage PWM rectifier is disussed.