介绍了一种用斩波器实现内燃机车主发电机励磁控制的装置。由机车蓄电池或直流供电模块为励磁回路提供直流电源,斩波器根据励磁电流给定和反馈调节产生开关信号,对该直流电源降压斩波实现主发励磁回路电流可调,同时斩波器控制模块为主发励磁提供放电回路。该励磁控制策略控制精度高、响应速度快、结构紧凑、易于维护。 A device for implementing excitation control of main generator of diesel locomotive with chopper is introduced. The locomotive battery or DC power supply module provides the DC power for the excitation circuit. The chopper generates a switching signal according to the excitation current given and the feedback regulation. The DC power supply is bucked to achieve the adjustable primary current loop excitation. At the same time, the chopper The control module provides a discharge loop for the main excitation. The excitation control strategy to control high precision, fast response, compact structure, easy to maintain.