基于DSP的逆变电源数字控制技术

Study on digital control technology of inverter power based on DSP

一个好的逆变电源的输出波形一方面要有高的稳态性能,还应有快的动态响应,而单一的控制策略很难同时满足这两方面的要求。因此,将各种控制策略取长补短、相互渗透,构成复合控制器,是一种趋势所在。讨论了当今各种比较流行的数字控制策略的优缺点,重点分析了无差拍控制和PID控制这两种控制策略的控制原理,并介绍了以高性能数字信号处理TMS320F2812为控制核心的逆变电源控制系统的软硬件设计。

The output waveforms of a good inverters power have not only the good steady-state performance, but also the fast dynamic response. It is very difficult for single control strategy to satisfy these two requirements at the same time. Thus, the hybrid control strategy is a developing direction because this strategy can take good advantage of every part while avoiding its default. The advantages and disadvantages of the prevalent digital control strategies were discussed, the control principle of the deadbeat control and PID control was analyzed in detail, and the hardware and software of the control system inverter were introduced based on the DSP TMS320F2812.