摘要
为了改进逆变器输出电压的质量,使其具有跟踪精度高,动态响应速度快的特点,提出了一种新型的基于多变量分数阶PI预测函数控制(MFOPI-PFC)与离散滑模控制的三相PWM电压型逆变器的电压电流双闭环控制方法。将分数阶PI算法与多变量预测函数控制算法相结合,提出了多变量分数阶PI预测函数算法,作为电压外环实现对负载电压的控制。利用离散滑模控制,作为电流内环控制器,实现对输出电流的控制。并在MATLAB平台上进行了线性负载下的调节,瞬态性能与输出端短路仿真实验,结果证明该电压电流双环控制方法具有良好的输出性能与抗负载扰动的能力,以及满意的输出端短路限流能力。
In order to improve the quality of inverter output voltage, and make it have characteristics of high precision and fast dynamic response, a novel voltage and current dual closed-loop control method for three-phase PWM voltage-source inverter based on multi-variable fractional order PI predictive function control （MFOPI-PFC） and discrete-time sliding mode control is proposed. The MFOPI-PFC is combined by fractional order PI and multi-variable predictive function control algorithm and is utilized to control voltages of the loads in the outer loop. And the discrete-time sliding mode control is utilized to control currents of the loads in the inner loop. Experiments of regulation under linear loads, transient performance and output short circuit are simulated on MATLAB platform. The results show that the voltage and current dual closed-loop control method has remarkable output performance, good interference rejection ability, and good current limiting capacity when a short circuit occurs at the output side.
出处
《控制工程》
CSCD
北大核心
2017年第3期600-608,共9页
Control Engineering of China
基金
国家自然科学基金资助项目(61473334)
江苏省高等学校大学生创新创业项目(201410300034Z)
关键词
逆变器
分数阶
预测函数控制
离散滑模控制
性能分析
Inverter
fractional order
predictive function control
discrete-time sliding mode control
performance analysis
