全电前轮转弯控制器MOSFET功耗分析与降低  

Analysis and Reduction of the MOSFET Power Loss of the Full Electric Front Wheel Steering Controller

作　　者：雷启华 王东俊 张喜 张夏一 LEI Qi-hua;WANG Dong-jun;ZHANG Xi;ZHANG Xia-yi(Chengdu Aircraft Industry(Group)Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]成都飞机工业(集团)有限责任公司,四川成都610031

出　　处：《电力电子技术》2025年第3期62-64,77,共4页Power Electronics

摘　　要：全电/多电是飞机发展趋势,前轮转弯系统也将向全电化发展,特别是对于无人机,受限于空间和重量,传统的液压驱动前轮转弯系统适用性不强。控制器是全电前轮转弯系统的核心部件,本文设计了以DSP为控制核心的位置伺服控制器,以前轮转弯角度为被控对象,硬件采用模块化设计,软件采用位置环+速度环+电流环的三闭环控制策略,无刷直流电机采用三相六步换相的梯形波驱动算法。三相逆变桥是控制器功率驱动板的核心部分,其功率开关器件MOSFET的功率损耗占控制器功耗的大部分,因此需要对其进行重点分析并降低其功耗,以使控制器温升满足要求。Full electric/multielectric is the trend of aircraft development,and the front wheel steering system will also move towards full electrification,especially for unmanned aerial vehicles.Due to space and weight limitations,the tra-ditional hydraulic driven front wheel steering systems are not suitable.The controller is the core component of the full electric front wheel steering system.A position servo controller with DSP as the control core is designed,with the front wheel steering angle as the controlled object.The hardware adopts a modular design,and the software adopts a three loop control strategy of position loop,speed loop,and current loop.The brushless DC motor adopts a three-phase six step commutation trapezoidal wave driven algorithm.The three-phase inverter bridge is the core part of the controller power driven board,and the power loss of its power switching deviceMOSFET accounts for the majority of the con-troller power loss.Therefore,it is necessary to focus on analyzing and reducing its power loss to ensure that the con-troller temperature rise meets the requirements.

关 键 词：电机 全电前轮转弯系统 位置伺服控制器 

分 类 号：TM33[电气工程—电机]