一种具有谐波抑制和无功补偿功能的新型整流变换器

研究了一种具有谐波抑制和无功补偿功能的新型PWM整流变换器，详细地讨论了整流器谐波与无功参考电流的提取和整流器输出电压的控制．采用基于瞬时无功理论的廿iq电流检测算法分别给定谐波和无功参考电流．为了有效地补偿电网中的谐波及无功电流，提出了一种电流和电压双闭环控制策略，其中，直流侧电压的调节采用模糊PI混合控制．最后，基于PSIM的仿真实验验证了不同工作模式下该方法具有良好的电压调节特性和谐波与无功补偿效果．

A New Type of Rectifier with Function of Harmonic Suppression and Reactive Power Compensation

This paper has studied a new type of Pulse Width Modulation （PWM） rectifier that has the function of harmonic suppression and reactive power compensation. The extraction method of the reference harmonic and reactive current and the voltage regulation method are discussed in detail. A detection method based on instantaneous reactive power ip-iq theory is adopted to give the harmonic and reactive reference currents respectively. In order to compensate both the harmonic and reactive power currents effectively, a voltage-current and dual closed-loop controlling method are presented,in which a kind of fuzzy PI hybrid control is used to the DC bus voltage regulator. At last, simulations based on the PSIM software prove that the method has good voltage regulation performance and compensation effect for harmonic and reactive currents under the different work modes.