摘要
设计了一种满足未来先进战斗机保障需求的地面三相AC／DC变换装置。前置级采用三相电压型PWM整流器，根据输入输出之间的功率平衡关系，提出一种基于αβ变换的前馈控制策略，使前馈信号同时包含了电网电压和负载的信息，通过快速调节交流侧电流，维持了系统功率平衡，从而解决了三相电压型PWM整流器受负载扰动和电网波动影响较大的问题。后级采用了ZVS移相全桥DC／DC变换器，建立和分析了变换器主电路的小信号模型，设计了基于平均电流模式的控制方案。实验结果验证了设计方案的正确性。
A ground three -phase AC/DC converter is designed to meet the security needs of the future advanced fighter. The pre stage adopts three - phase voltage type PWM recti.fier, according to the power balance relationship between input and output, a feedforward control strategy based on alpha beta transformation is proposed, making feedforward signal containing a grid voltage and loading information, by adjusting AC side current, it maintains the balance of power system, so as to solve the problems of three - phase voltage type PWM rectifier load disturbance and grid fluctuations. The post stage uses the ZVS phase shifted full bridge DC/DC converter, set up and analyse small signal model of the main circuit of the converter, the control scheme is designed based on the average current mode. The experimental results verify the validity of the design scheme.
出处
《西安铁路职业技术学院学报》
2013年第4期13-18,共6页
Journal of Xi’an Railway Vocational & Technical Institute
