BSG微混系统电机控制策略的研究  

Control Strategy Research of BSG Micro Hybrid System Motor

作　　者：范泽华[1] 姜淑忠[1] 

机构地区：[1]上海交通大学,上海200240

出　　处：《微特电机》2017年第4期1-5,共5页Small & Special Electrical Machines

摘　　要：针对BSG微混动力汽车系统的要求,采用混合励磁爪极同步电机作为系统电机。结合起动-发电一体化工作模式,介绍了基于空间电压矢量控制的控制策略。起动部分的控制策略为电动运行策略,根据运行工况分别进行增磁和弱磁控制,在增磁控制策略下,励磁电流作用为增磁以提高转矩;弱磁控制策略下,采用励磁电流和直轴电流协调控制以抵消永磁体磁场,提高转速。发电策略采用电压电流双闭环的控制策略,励磁电流作用为调节磁场来满足可控整流的要求,从而实现母线电压稳定。根据电机的数学模型对控制策略进行了仿真分析和样机测试,仿真和实验结果表明:在起动状态下,该控制策略具有在增磁区大转矩、在弱磁区宽调速范围的特性;在发电状态下,该控制策略可以使母线电压在宽转速范围内维持稳定,具有优良的调磁调压能力。Aiming at the demand of micro hybrid electric vehicle system, using hybrid excitation claw-pole synchro- nous motor as the BSG motor. Combining the working mode as starter/generator motor, control strategy based on space volt- age vector control was proposed. Electric strategy was divided into zones by flux-enhancing and flux-weakening domains according to operating conditions, field current works to improve torque by enhancing flux in flux-enhancing strategy, d- axis current and field current were coordinately controlled to increase speed by offsetting permanent magnet field in flux- weakening strategy. Generation strategy uses voltage and current double closed-loop method, field current works to satisfy the command of controllable rectifier by regulating magnetic field, thus making bus voltage stable. According to the mathe- matical model of the motor and control strategy, simulation analysis and prototype testing were performed. The simulation and experimental results show that the control strategy possesses high torque at flux-enhancing domain, wide speed range at flux-weakening domain under starter mode; bus voltage stability is ensured at wide speed range to show excellent capacity in regulating magnetic and voltage under generation mode.

关 键 词：皮带传动起动-发电一体机(BSG) 混合励磁爪极同步电机 起动/发电一体电机 矢量控制策略 宽调速 

分 类 号：TM341[电气工程—电机]