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首页> 外文会议>Electrotechnical Conference (MELECON), 2012 16th IEEE Mediterranean >Modelling of an electronically commutated (Brushless DC) motor drives with back-emf sensing
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Modelling of an electronically commutated (Brushless DC) motor drives with back-emf sensing

机译：具有反电动势感应的电子换向（无刷直流）电动机驱动器的建模

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摘要

Brushless DC (BLDC) motors and their drives are penetrating the market of home appliances and HVAC industry in recent years because of their high efficiency, silent operation, high reliability and low maintenance requirement. Conventionally, BLDC motors are commutated in six-step pattern with commutation controlled by position sensors. To reduce cost and complexity of the drive system, sensorless drive is preferred. The existing sensorless control scheme with the conventional back EMF sensing based on motor neutral voltage for BLDC has certain drawbacks, which limit its applications. This paper presents a circuit model of an electronically commutated motor drive with back emf sensing. The circuit model was simulated using LTspice and the results obtained were compared with the experimental results. The value of the motor constant and the back emf measured from the experiment agreed with the simulated model
机译：近年来，无刷直流（BLDC）电动机及其驱动器以其高效率，静音运行，高可靠性和低维护要求而进入了家用电器和HVAC行业。常规上，BLDC电机以六步模式进行换向，换向由位置传感器控制。为了降低驱动系统的成本和复杂性，首选无传感器驱动。基于BLDC的基于电动机中性电压的常规反电动势感应的现有无传感器控制方案存在某些缺陷，这限制了其应用。本文介绍了具有反电动势感应的电子换向电动机驱动器的电路模型。使用LTspice对电路模型进行了仿真，并将获得的结果与实验结果进行了比较。实验测得的电机常数和反电动势值与仿真模型一致

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