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首页> 外文会议>IEEE International Electric Machines and Drives Conference;IEMDC '09 >A simple and accurate method for the experimental performance evaluation of high speed sensorless brushless dc motors
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A simple and accurate method for the experimental performance evaluation of high speed sensorless brushless dc motors

机译：一种简单，准确的高速无传感器无刷直流电动机实验性能评估方法

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摘要

One of the common problems of testing high speed sensorless brushless dc (BLDC) motors is the lack of the torque transducers that are capable of operating at speed higher than 25000 rpm as well as the difficulty of separating the iron loss from friction and windage losses. This paper describes a method of determining these types of losses by using a special ldquodummyrdquo motor, in which rotor magnets are not magnetized. The paper also presents a simple test method, which can be used for testing high speed sensorless BLDC motors and drives without the direct torque measurement. The absence of torque transducers eliminates the speed limits introduced by them. In this case, the speed limit is determined by the motor construction only. That is achieved by performing a load test by mechanical coupling of two BLDC motors together when one is operating as a motor, and the second as a generator. The paper describes the method of performing 3-phase symmetrical load for the generator using the single phase rheostat connected through a 3-phase rectifier. The method is used for the high speed sensorless BLDC motors employed in medical industry devices like sleep apnea treatment and the ventilation systems.
机译：测试高速无传感器无刷直流（BLDC）电动机的常见问题之一是缺少能够以高于25000 rpm的速度运行的扭矩传感器，以及难以将铁损与摩擦和风阻损分开的问题。本文介绍了一种通过使用特殊的ldquodummyrdquo电动机来确定这些类型的损耗的方法，在该电动机中，转子磁体没有被磁化。本文还提出了一种简单的测试方法，该方法可用于测试高速无传感器BLDC电动机和驱动器，而无需直接测量扭矩。没有扭矩传感器消除了它们引入的速度限制。在这种情况下，速度极限仅由电动机结构决定。当一台BLDC电机作为电动机运行，另一台作为发电机运行时，通过将两台BLDC电机机械耦合在一起进行负载测试，即可实现这一点。本文介绍了使用通过三相整流器连接的单相变阻器为发电机执行三相对称负载的方法。该方法用于医疗行业设备（如睡眠呼吸暂停治疗和通风系统）中使用的高速无传感器BLDC电机。

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