摘要
单周期控制(OCC)三相功率因数校正(PFC)技术,无需使用乘法器也无需采样输入电源电压,具有控制简单、容易实现的特点,因此得到广泛的研究和应用。分析了三相维也纳(VIENNA)整流器在传统OCC策略下的工作原理,同时针对母线侧电容不均压问题提出了一种改进的OCC策略,并推导了该策略的核心控制方程。改进的OCC策略能有效改善母线侧电容不均压问题,从而保证了桥臂电压及输入电流波形质量,并通过实验验证了理论分析的可行性。
The one-cycle control（OCC） strategy used in the power factor correction（PFC） circuit is widely researched and used because of needless of the multiplier and sampling input voltage.The strategy contains the feature of simple control and easy achievement.The principle of the conventional OCC three-phase VIENNA rectifier is analyzed, and the modified OCC strategy is proposed for DC bus voltage-balance control.The new type control equation is also de- rived.The modified OCC strategy could improve the problem of DC bus voltage-balance and then guarantee the quality of the bridge voltage and the input current waveforms.The experimental results verify the theoretical analysis.
出处
《电力电子技术》
CSCD
北大核心
2013年第2期30-32,共3页
Power Electronics
关键词
整流器
单周期控制
母线电容均压
rectifier
one-cycle control
bus capacitance voltage-balance
