基于绕组电感的无刷直流电动机无位置传感器控制

A Novel Position-Sensorless Method of BLDCM Utilizing Inductance Variation

反电动势法是无刷直流电动机无位置传感器控制中技术最成熟、应用最广泛的方案。然而,反电动势法不适用于低速和零速。为了解决这个问题,提出了一种基于绕组电感变化的新方法,并通过仿真和实验加以验证。最后,为进一步的研究和应用提出一些实用的建议。

Back-emf method is one of the most widely used methods among the position sensorless control techniques of brushless DC motor. However,it is hard to detect the back-emf when the motor is at still or low speed. Based on the inductance variation this paper put forward a new method to solve these problems. Simulation and experimental results were also presented to verify the analyses. Finally, suggestions were listed for further research and application.