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含三次谐波注入的SPWM在dsPIC30F单片机上的实现 被引量:1

The Implementation of SPWM with Third Harmonic Injection Based on the dsPIC30F MCU
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摘要 对于三相电压源型逆变器,采用普通规则采样PWM控制方法,其输出基波线电压的最大幅值仅为直流母线电压的86.6%;增加一定比例三次谐波成分,可将最大调制比增加到1.15并且不会产生过调制,提高了直流母线电压利用率;利用dsPIC30F单片机实现了三次谐波注入PWM,并给出了实验结果,验证了所用方法的正确性。 For a three phase voltage-source inverter, the maximum line-to-line fundamental voltage amplitude is only about 86.6% of the DC link voltage based on the normal regular sampling PWM scheme; by adding a fraction of third harmonic component, the maximum modulation index can be increased to 1.15 without going into overmodulation and it implies a better utilization of the DC link voltage; the third harmonic injection PWM is implemented by use of the dsPIC30F MCU and the experimental results are given, which improve the correctness of the method.
作者 于洋 张加胜
出处 《电气技术》 2011年第9期49-51,共3页 Electrical Engineering
关键词 脉宽调制 三次谐波注入 单片机 PWM third harmonic injection MCU
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参考文献4

  • 1D.C.Rus,N.S.Preda,et al.Comparative Analysis of PWM Techniques:Simulation and DSP Implementation[].IEEE International Conference on Automation Quality and Testing Robotics(AQTR).2010
  • 2Microchip.dsPIC30F4011/4012Data Sheet[]..2008
  • 3Houldsworth J A,Grant D A.The Use of Harmonic Distortion to Increase the Output Voltage of a Three-Phase PWM Inverter[].IEEE Transactions on Industry Applications.1984
  • 4HOLMES D G,THOMAS A L.Pulse width modulation for power converters:principles and practice[]..2003

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