Energy-efficient and torque enhanced brushless DC motor controller

Chang-Chi Lee, Gwo-Jen Chiou, Jeng‐Yue Chen, Yao-Chun Tung, Shung-Hong Lu, F. Juang, Shengzhi Chen
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Abstract

This experiment designed and fabricated the controller of a brushless DC motor which equips with Hall sensors. The motor driver was fabricated with Microchip dsPIC30F4011 chip which read feedback signals from the Hall sensors. The chip connected to the three-phase six-arm switching inverter circuit then connected to the motor. In such a way the user can drive the motor by position control using the method of six-step square wave vector control. But this conventional control method can just reach a torque of 60 degree power angle. In this study the vector synthesis method was employed to produce a maximum torque of 90 degree power angle. This method can decrease the kinetic energy loss of torque. From the experimental results, it is found that with 90 degree power angle the motor power consumption decreased, torque enhanced and rotation speed increased when compared with 60 degree power angle.
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节能和扭矩增强无刷直流电动机控制器
本实验设计并制作了装有霍尔传感器的无刷直流电动机控制器。电机驱动器采用Microchip dsPIC30F4011芯片,读取霍尔传感器反馈信号。该芯片连接到三相六臂开关逆变电路,再连接到电机。这样,用户可以通过使用六步方波矢量控制方法的位置控制来驱动电机。但这种传统的控制方法只能达到60度功率角的转矩。在本研究中,矢量综合方法被用于产生最大扭矩90度的功率角。这种方法可以减少转矩的动能损失。实验结果表明,与60度功率角相比,当功率角为90度时,电机功耗降低,转矩增强,转速提高。
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