基于DSP的单相逆变电源的智能控制研究

Research of Intelligent Control in Single-phase Inverter Power Source Based on DSP

针对逆变电源输出稳态特性与动态性能兼顾的问题,采用数字信号处理器DSP作为控制核心,将智能控制与常规控制相结合,提出了系列新型单相逆变电源设计方案:模糊自整定PI双闭环控制设计方案。与传统的PID控制器相比,模糊PID控制具有超调量小,鲁棒性强,自适应性强,调节时间短,输出电压波形具有较低的总谐波畸变率THD,同时还获得了良好的稳态和动态特性,能够较好地满足逆变电源的控制要求。

For the inverter power output steady-state characteristics and dynamic performance of both the problem, this paper presents a digital signal processor （DSP） as the control core, intelligent control and conventional ：control will be combined and put forward a series of new single-phase inverter power supply design： fuzzy self-tuning PI pairs of closedloop control design. Compared with the traditional PID controller, fuzzy PID control with a small overshoot and strong robustness, self-adaptive, adjusting a short time, the output voltage waveform has a low total harmonic distortion （THD）, but also get a good steady-state and dynamic features, better able to meet the inverter power control requirements.