摘要
在分析三相SVPWM基本原理的基础上,针对空间电压矢量调制(SVPWM)逆变器,提出了一种以参考电压为前提求取占空比的简化算法。针对电机在低频时电气特性差,启动转矩低等问题,提出了硬件优化方案,并在软件方面,通过死区补偿控制改善了死区效应带来的不利影响,取得了较好的控制效果。
For space vector pulse width modulation（SVPWM） inveter control and through the basic principle analysis of the three-phase SVPWM technique,a simplification of obtaining the duty cycles on the basic of the reference voltages are proposed in this paper.The DSP is used as the the core control device,and an optimal design method of the hardware control system is proposed,aim at the electrical characteristics of the motor gets worse and the starting torque turns dowm,when the motor starts.In software design,the dead time effect is improved according to dead-time compensation control.
出处
《自动化技术与应用》
2010年第10期106-109,123,共5页
Techniques of Automation and Applications
关键词
SVPWM
矢量算法
低频特性
死区补偿
SVPWM
vector algorithm
low frequency characteristic
dead-time compensation
