航空电驱动系统效率优化控制研究  

Efficiency optimization control for aero electric propulsion system

作　　者：宋科[1] 刘卫国[1] 骆光照[1] 窦满峰[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《电机与控制学报》2009年第4期471-476,共6页Electric Machines and Control

基　　金：国家自然科学基金重大研究计划(90716026)

摘　　要：针对有限能量供电的一类航空电驱动系统,研究电机的最小损耗电流控制。根据此类电驱动系统运行速度高的特点,提出一种考虑电机铁损的永磁同步电机(PMSM)Γ型近似等效电路,结合电机状态方程,推导出满足电磁损耗最小的励磁电流表达式,并对PMSM铁损及铜损之间的关系及最小损耗电流控制中的基本电磁约束关系进行分析。针对恶劣环境下,电机参数变化范围大的特点,分析电机等效铁损电阻的变化及对效率优化控制的影响。最后,进行Matlab仿真及dSPACE半物理实验验证。结果表明,在整个运行区间内,与传统的直轴电流等于零控制相比较,最小损耗电流控制能够降低电机电磁损耗,提高电机运行效率。A loss minimization current control （LMC） is presented for an electric aero-propulsion system with limited power supply. A ＂Г＂ equivalent circuit of permanent magnet synchnonous motors（PMSM）, taking the core losses into account and its state equations are proposed. The optimal magnetizing current, which decreases the electric magnetic losses and maximizes electric machine efficiency are derived. The relationship between the copper losses and iron losses and the electromagnetic constraints are analyzed in detail. Additionally, under the harsh environment, the iron loss equivalent resistance varies and its influence on LMC is discussed. Finally, the Matlab simulation and experimental results based on dSPACE show that the total electromagnetic loss decreases and operating efficiency is enhanced in comparison with traditional imd = 0 A.

关 键 词：电驱动 永磁同步电动机 效率优化 矢量控制 损耗模型控制 

分 类 号：TM351[电气工程—电机] TM921.54