基于电压边界限定条件的电动汽车弱磁策略  

The Field Weakening Strategy of Electric Vehicle Based on Voltage Boundary Limit Condition

作　　者：吴义阳[1] 杨淑英[1] 金辰璐[1] 张兴[1] 

机构地区：[1]合肥工业大学,电气与自动化工程学院,安徽合肥230009

出　　处：《电力电子技术》2013年第9期69-71,共3页Power Electronics

摘　　要：在电动汽车应用场合,宽范围的调速需求使弱磁运行成为其驱动用异步电机的重要运行状态,也是衡量电动汽车驱动器性能的重要指标。基于电机数学模型的弱磁控制算法对电机参数变化及直流电压波动较为敏感,其控制性能受到限制。而基于电压边界限定条件的弱磁控制方案不仅能确保弱磁运行状态的最大转矩输出,且对电机参数变化和直流电压波动具有较强的鲁棒性;与此同时,电压闭环控制能调节电流环动态响应所需的电压控制裕量,进而提高系统动态响应特性。In the electric vehicle applications, wide range of speed regulation demand making the field weakening operation become an important running state and indicator to measure the driving performance.The field weakening control strategy based on mathematical model of motor has limited control performance because it is relatively sensitive to motor parameters change and direct current voltage fluctuation.The control strategy based on voltage boundary limit condition can ensure the biggest torque output, and has strong robustness to motor parameters variations and direct current voltage fluctuation.Meanwhile ,the closed loop control of voltage ,can regulate the necessary voltage control allowance of current loop＇s dynamic response.

关 键 词：弱磁控制 电压边界限定 异步电机 电动汽车 

分 类 号：TM571[电气工程—电器]