摘要
在基于SVPWM的电压源逆变器中死区时间的插入是必不可少的。这将导致电压和电流的畸变,也就是所谓的死区效应。对这一问题提出了许多不同的补偿方法。在传统的平均死区电压补偿方法基础上提出了一种新的改进方法,在运行速度很低时该方法比传统的方法有更小的电压和电流畸变,而且由软件实现,不需要增加额外的硬件。仿真试验结果证实了该方法的有效性。
It is nature to insert a switching delay time in sinusoidal pulse width modulation （PWM） voltagefed inverters to prevent a short circuit in the DC link. This causes well known dead time effect which distorts the output voltage and current. Many compensation schemes are proposed to overcome the drawbacks, Based on the traditional average dead time compensation techniques, an improved method was proposed to advance the performance of dead time compensation. The method is based on SVPWM strategy and it can be implemen- ted with software without any extra hardware. Simulation results demonstrate the validity of the proposed method.
出处
《电气传动》
北大核心
2008年第2期19-22,26,共5页
Electric Drive
关键词
死区效应
线性补偿
伏秒原理
dead time effect
linear compensation
volt-second principle
