摘要
在不平衡负载或非线性负载条件下,现有的三相四桥臂逆变器控制方法不能彻底解决逆变器输出电压的完全对称性问题。针对该问题,首先建立了逆变器的数学模型,在此基础上,采用新型的分序策略对控制量进行了分序,并用前馈法对系统进行解耦。其次,设计了控制系统参数。最后,通过实验证明了所提的控制方法是正确可行的,并且优于正序同步旋转坐标系下的比例积分双环控制策略。
Under asymmetry load or nonlinear load condition,many control strategies can’t fully solve the problem that three-phase four-leg inverter’s output voltage is asymmetrical.As far as this problem is concerned.The synchronous rotating control strategy based on the decomposition sequence is proposed.Firstly,the inverter’s mathematical model is given.Based on the model,control variables are decomposed in the novel decomposition sequence algorithm,and the forward-feed decouple method is adopted in the control system;Secondly,control system parameters are determined.Finally,the experimental results and comparatively analysis verify the proposed control method is valid and superior to traditional synchronous frame proportion-integration control strategy.
出处
《电力电子技术》
CSCD
北大核心
2010年第11期25-27,共3页
Power Electronics
关键词
逆变器
分序算法
前馈解耦控制
inverter
decomposition sequence algorithm
feed-forward decouple control
