摘要
三相电压型PWM整流器的控制已趋于成熟,其中滞环控制为经典方法,它通过对连续模拟量离散采样来获取数据进行算法计算,选取采样周期对控制精度至关重要。在综合考虑三相电流的情况下,从多方面分析采样周期改变对整流器控制系统带来的影响,包括控制实时性与稳定性,分别从滞环算法、A/D采样及开关频率3个方面进行阐述,并通过仿真与实验验证了该分析结果的正确性,使系统达到最佳控制效果。
Three-phase voltage-type PWM rectifier control has become mature, and the most classic method is hysteresis control method,this mothod gets data for calculation through continuous analog discrete sampling, so selecting sample period is critical to control precision.Under comprehensive consideration of the three-phase current,the impacts of sampling period to hysteresis PWM rectifier control system are analysised from various aspects, including real- time control performance and stability,explains through hysteresis algorithm, A/D sampling and switching frequency. Simulation and experiment results verify the correctness of the analysis, it can make the system achieve the best effect.
出处
《电力电子技术》
CSCD
北大核心
2012年第9期37-39,共3页
Power Electronics
基金
国家自然科学基金(50977063)
国家863高技术研究发展计划项目(2008AA11A145)
天津市科技支撑重点项目(09ZCKFGX01800)~~
关键词
整流器
采样周期
滞环算法
开关频率
rectifier
sampling period
hysteresis algorithm
switching frequency
