摘要
针对三相逆变电源传统控制方案控制效果差的特点,提出了比例积分微分(PID)控制和支持向量机的逆模型控制相结合的控制策略。经过坐标变化,利用三相逆变电源在αβ坐标系下的特性,支持向量机学习算法用于预估逆变器的逆模型,从而在线实现对逆变器的补偿,PID控制器实现控制系统的闭环控制。通过对系统在稳态负载、动态负载情况下进行了仿真试验。仿真结果表明,该方案控制下系统能够克服系统外界扰动的影响,输出电压波形畸变少,达到输出波形质量性能的要求。
According to the shortage of traditional three-phase inverter control scheme, this paper presented a composite control scheme of proportion integration differentiation （PID） control and inverse mode control based on support vector machines （SVM）. Using the characteristics of three-phase a/3 rotating frame by means of coordinate transformation and SVM in estimating the inverse mode of inverter, the compensation of inverter online was realized. PID control achieved the closed-loop control of the system. Simulations proceeded in the situations of steady-state load and dynamic load. The simulation verifies that the scheme can overcome the influence of external disturbances. Less aberration is gained,and the output waveform meets performance requirement.
出处
《低压电器》
2013年第17期38-42,共5页
Low Voltage Apparatus
关键词
三相逆变电源
逆模型控制
支持向量机
波形控制
three-phase inverter
inverse mode control
support vector manchines （SVM）
waveform control
