【摘要】 文章对基于单周期控制的三相PWM高功率因数整流器进行了研究,推导了单周期控制三相电压型PWM整流器的控制规律。它不需要乘法器更不需要对输入电压进行检测,其控制逻辑简单并且以恒定频率工作,可以在每个开关周期控制输入电流跟踪正弦参考量,从而实现低电流谐波畸变和高功率因数。基于Multisim2001软件平台,建立了基于单周期控制的三相电压型PWM整流器的仿真模型,完成了6kW三相PWM整流器的设计和实验研究,仿真和试验结果都验证了理论分析的正确性。更多还原

【Abstract】 This paper researches a three-phase voltage source type PWM rectifier based on one-cycle control(OCC).The control laws of a three-phase PWM rectifier by one-cycle control are deduced.Its logic is simple and the multipliers and input voltage sensors are not needed.The control can be implemented by the general integrate circuits and electronic devices.The input current can be controlled to follow the sinusoidal reference in each switching cycle,low current distortion and unity power factor can be achieved in the proposed rectifier based on Multisim 2001,a simulation model of three-phase voltage source PWM rectifier based on one-cycle control is proposed.A 6 kW three-phase PWM rectifier with OCC is designed and implemented.The input current can automatically follow the line phase voltage in a sine wave and the unity power factor is realized in fixed frequency operation.Simulative and experimental results verify the theoretic analysis.更多还原