摘要
电力牵引传动系统通常采用多模式调制策略。为了解决调制模式之间切换产生的电流和转矩冲击问题,该文对调制模式切换引起的定子磁链偏差进行研究,提出一种通用多模式调制切换策略。该策略通过分析改变开关时刻对两相静止坐标系下定子磁链的影响,计算出各相开关时刻的补偿幅度对定子磁链偏差进行补偿,从而实现多模式调制的平滑切换。该策略直接对定子磁链偏差进行补偿,不受具体调制方式和电机参数约束,可实现任意时刻无冲击切换。仿真和实验验证了定子磁链偏差补偿策略的通用性和有效性。
Multi-mode modulation strategy is usually used in electric traction drive system. In order to solve the problem of current and torque impact caused by switching between modulation modes,this paper studies the stator flux deviation caused by switching modulation modes, and proposes a general multi-mode modulation switching strategy. By analyzing the influence of changing the switching time on the stator flux linkage in two-phase static coordinate system, the compensation amplitude of each phase switching time is calculated to compensate the stator flux linkage deviation, so as to realize the smooth switching of multi-mode modulation. The strategy compensates the stator flux deviation directly,and it is not constrained by the specific modulation mode and motor parameters, so it can achieve no impact switching at any time. The simulation and experiment verify the generality and effectiveness of the stator flux deviation compensation strategy.
作者
苑国锋
沈阳
Yuan Guofeng;Shen Yang(Academy of Electrical and Control Engineering North China University of Technology,Beijing 100144 China;Inverter Technologies Engineering Research Center of Beijing,Beijing 100144 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2022年第5期1171-1180,共10页
Transactions of China Electrotechnical Society
基金
北方工业大学毓优人才计划资助项目(107051360021XN083/043)。
关键词
多模式调制
转矩冲击
切换方法
定子磁链偏差
开关时刻修正
Multi-mode modulation
torque impact
switching strategy
stator flux deviation
switch time correction
