低压配电网三相补偿式交流稳压电源设计  

Design on Three-phase AC Voltage-Stabilized Power Supply with Compensation

作　　者：雷才嘉 

机构地区：[1]广州供电局,广东广州510620

出　　处：《企业技术开发》2015年第12期61-63,71,共4页Technological Development of Enterprise

摘　　要：当前广泛使用的低压交流稳压式电源,主要为全功率变换型,而全功率变换器在电压转换中,开关器件必须承受电路中的全部功率,从而导致硬件成本大大增加。文章提出的三相补偿式交流稳压电源,通过增加变压器补偿环节,很好地实现了提高输出电压精度和降低硬件成本。同时,采用的双PWM电压型整流器拓扑结构和基于电压外环、电流内环的SPWM控制策略,有效保证了网侧的高功率因数和低电流谐波。仿真结果验证了上述设计方案的可行性。The current widespread use of the AC vohage-stabilized power supply is mainly focused on fully regulated power conversion type, and the switching devices of fall-power converter mast bear all the power in the voltage conversion, resulting in greatly increased hardware costs.This paper proposed a three-phase AC voltage-stabilized power supply achieving a good output voltage with high accuracy and low cost of hardware by bringing in the transformer compensator.Meanwhile,the use of topology based on dual PWM rectifier and SPWM control strategy based on the outer voltage ring,inner current loop,effectively ensured the grid＇s high power factor and low current harmonic.The simulation results verified the feasibility of the design.

关 键 词：补偿式 交流稳压电源 PWM整流器 单位功率因数 

分 类 号：TM721[电气工程—电力系统及自动化]