船用交流电机基于DSP的软启动控制系统研究

Study of Soft-Start Control System for Marine AC Motor Based on DSP

交流电机在船舶上的应用非常广泛,但其启动冲击电流比较大,对电网和电机的冲击比较大,因此对电机启动控制的研究非常重要。文章介绍了软启动器的特点、用途和其在船舶上的应用,并根据软启动器的原理,利用DSP和晶闸管,设计了一个基于DSP控制的调速系统。通过控制晶闸管的导通角度和导通时间,来实现电机的平滑启动,以降低启动对电网和电机的冲击。最后对电机的软启动控制系统进行了分析。

The AC motor is widely used, but there is a question that the Start current is very large, and it＇has a large impact on the grid and the motor, so studying the control of start for motor is very important. This paper introduced the trait of the soft-start, its function and application in vessels, and designed a Speed Regulating Control System based on DSP with DSP and transistor. Through controlling the electrifiable angle and time to realize the soft start of the Motor and to reduce the impact on the grid and the motor. Finally it analyzed Soft-Start Control System of motor.