摘要
当前,对PWM逆变器数字化先进控制策略的研究方兴未艾。以现有的研究为基础,提出了一种新的控制方案,将负载电流直接补偿的无差拍控制策略用于PWM逆变器的精确控制,有效地抑制了外部环境变化或系统参数波动而引起的扰动,改善了逆变器的动、静态性能。为避免传感器对电感电流的直接检测,设计了一个全维观测器来估计状态。最后通过分析和仿真,证实了该方法的有效性和可行性。
Study on digital and advanced control strategy for PWM inverter is in the ascendant. A novel control scheme was proposed. With load current directly compensating, a deadbeat control strategy was applied into precisely controlling for PWM inverter. The strategy can effectively restrain disturbances caused by changes of system parameters or external circumstances and improve the dynamic and static performance of system. A full order predictive state observer was designed in order to reduce the sensor in detecting the current of inductance. The simulation and analysis verify the effectiveness and feasibility of the control method.
出处
《机电工程》
CAS
2008年第3期81-83,共3页
Journal of Mechanical & Electrical Engineering
关键词
逆变器
脉宽调制
无差拍控制
状态观测器
inverter
pulse width modulation （PWM）
deadbeat control
state observer
