混合永磁记忆电机全速域分段调速方法  

The speed regulation method of hybrid permanent magnet memory machine throughout different stage of all speed range

作　　者：李彦红 包广清 谢平 孟庆成 LI Yan-hong;BAO Guang-qing;XIE Ping;MENG Qing-cheng(Tianshui Changcheng Switchgear Group Co.Ltd.,Tianshui 741024,China;School of Electronics and Information Engineering,Southwest Petroleum University,Chengdu 610500,China;School of Electrical and Information Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China)

机构地区：[1]天水长城开关厂集团有限公司,甘肃天水741024 [2]西南石油大学电气信息学院,四川成都610500 [3]兰州理工大学电气工程与信息工程学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2023年第3期75-82,共8页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51967012);甘肃省重点研发计划项目(20YF8GA055)。

摘　　要：针对钻机顶驱永磁电动机电能消耗大、退磁风险高、高效率调速范围窄等问题,提出以混合永磁记忆电机(HPM-MM)为核心的新型直驱式变频顶驱系统.根据HPM-MM不同磁化状态下永磁磁链与转速的对应关系,结合永磁体在线写极与超前角弱磁协调控制,使HPM-MM在具备永磁同步电机的优良特性外,还可以实现大范围平滑调速控制.通过计算转折速度划分运行区域,将运行区域分为恒转矩低速区和恒功率高速区.低速区使电机处于正向饱和充磁状态获得最大输出转矩.高速区包括弱磁Ⅰ区和弱磁Ⅱ区,弱磁Ⅰ区通过电机低矫顽力磁钢分段调磁实现高效调速;弱磁Ⅱ区采用超前角弱磁控制,通过重新分配定子电流进一步拓宽电机调速范围.该方法有效结合了HPM-MM本体的在线调磁与驱动协调控制能力,仿真分析验证了理论结果的有效性与可行性.Aiming at the problems of high power consumption,high demagnetization risk,and narrow speed regulation range of permanent magnet motor for top-driving drilling system,a novel direct-drive variable frequency top drive system with hybrid permanent magnet memory machine(HPM-MM)as the core is proposed.According to the corresponding relationship between permanent magnet flux linkage and speed under different magnetization states of HPM-MM,combined with the coordinated control of online written pole and leading angle magnetic weakening,a zoning speed control strategy is realized.In addition to the excellent characteristics of a permanent magnet synchronous motor,a wide range of smooth speed regulation characteristics is available in the HPM-MM system.By calculating the turning speed,the operation area is divided into constant torque low-speed area and constant power high-speed area.In the low-speed region,the motor is in the forward saturation magnetization state,so as to obtain the maximum output torque.The high-speed area includes weak magnetic fieldⅠarea and weak magnetic fieldⅡareas,where the former realize high-efficiency speed regulation through backward magnetization state adjustment of soft magnetic material,and the latter adopts the leading angle flux weakening control to further widen the speed regulation range by redistributing the stator current.

关 键 词：游标电机 混合永磁励磁 在线调磁 超前角弱磁 分区转速控制 

分 类 号：TM351[电气工程—电机]