专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5780983A Brushless DC motor drive apparatus 失效
标题翻译：无刷直流电机驱动装置
公开(公告)号：US5780983A
公开(公告)日：1998-07-14
申请号：US623347
申请日：1996-03-27
申请人： Osamu Shinkawa , Akihito Uetake
发明人： Osamu Shinkawa , Akihito Uetake
IPC分类号： H02P6/08 , H02P6/18 , A02P6/02
CPC分类号： H02P6/085 , H02P6/182
摘要： A brushless DC motor drive apparatus according to the invention comprises a stator and a rotor, the stator including multi-phase armature windings which are connected in a star formation and generate a plurality of terminal voltages at respective terminals of the armature windings, and the rotor including a plurality of permanent magnets which form pairs of magnetic poles. The motor drive apparatus also includes an inverter coupled to the rotor for adjusting the speed of the rotor, a rotor position detection means for detecting the terminal voltages generated in the armature windings and for generating a position signal indicative of a magnetic pole position of the rotor. The rotor position detection means includes a line voltage generation means for generating line voltages corresponding to the terminal voltages of the armature windings and comparison means for comparing signals derived from the line voltages in predetermined combinations and outputting comparison signals as the positional signal. The motor drive apparatus also includes a drive control means for controlling and driving the inverter according to the position signal generated by the rotor position detection means, the drive control means including PWM (Pulse Width Modulation) chopper control means for generating a PWM chopper control signal to control the inverter. The motor drive apparatus according to the present invention can always detect accurate rotor position without being affected by the rotational frequency or load of the brushless DC motor. Furthermore, the motor drive apparatus can easily expand the operational range of a brushless DC motor, particularly that of a brushless DC motor possessing an embedded magnet-type rotor structure. Additionally, the motor drive apparatus can easily and accurately operate a brushless DC motor according to its motor characteristics and control method.
摘要翻译：根据本发明的无刷直流电机驱动装置包括定子和转子，所述定子包括以星形连接并在电枢绕组的各个端子处产生多个端子电压的多相电枢绕组，并且转子包括形成磁极对的多个永磁体。马达驱动装置还包括与转子相连的用于调节转子速度的变换器，转子位置检测装置，用于检测在电枢绕组中产生的端电压，并产生指示转子的磁极位置的位置信号。转子位置检测装置包括用于产生对应于电枢绕组的端子电压的线电压的线电压产生装置和用于比较以预定组合从线电压得到的信号并输出比较信号作为位置信号的比较装置。电机驱动装置还包括驱动控制装置，用于根据转子位置检测装置产生的位置信号来控制和驱动逆变器，驱动控制装置包括PWM（脉宽调制）斩波控制装置，用于产生PWM斩波控制信号控制变频器。根据本发明的电机驱动装置可以始终检测精确的转子位置，而不受无刷直流电动机的转速或负载的影响。此外，电动机驱动装置可以容易地扩大无刷直流电动机的工作范围，特别是具有嵌入式磁体型转子结构的无刷直流电动机的工作范围。此外，电机驱动装置可以根据其电机特性和控制方法容易且精确地操作无刷直流电动机。

IPRDB

热门服务

关于我们

友情链接

联系方式