摘要
传统的逆变电源控制方案在数字化实现过程中受到采样延时、计算延时以及电磁干扰等诸多因素的影响,在一定程度上限制了数字控制逆变电源性能的进一步提高。由于受采样控制的实时性限制,400Hz逆变器实现数字控制比工频逆变器更为困难。采用基于DSP的全数字化三闭环控制程序实现方案,设计了程序的软硬件,并深入研究了实现过程中出现的问题。最后研制了全数字控制的单相逆变电源试验样机。实验结果表明,该逆变系统有较快的动态响应、高稳压精度以及小的输出电压谐波畸变率。
Digital control for inverter power supply has many advantages, but sampling-delay and calculation-delay influence system characteristics and hinders the improvement of the digital controlled inverters＇performance.Because of the demand of the real time sampling control,there will be more difficulties in digital controlling the inverter to achieve good output voltage waveform and high capability than the control of 50 Hz inverter.This thesis deeply analyzes the characteristics of the three-loop control system and its digital realization by DSP, develops a experimental prototype of the digital controlled single phase inverter.The validity of the proposed scheme is proved by the experimental results.
出处
《电力电子技术》
CSCD
北大核心
2008年第9期45-46,57,共3页
Power Electronics
关键词
数字控制
逆变电源/数字信号处理器
digital control
inverter power supply / digital signal processor
