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首页> 外文期刊>American Journal of Engineering Research >Study on Controlling Brushless DC Motor in Current Control Loop Using DC-Link Current
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Study on Controlling Brushless DC Motor in Current Control Loop Using DC-Link Current

机译：利用直流母线电流控制电流控制回路中的无刷直流电动机的研究

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摘要

The Brushless DC motor (BLDC) has been being used widely due to high starting torque and the absen ce of brushes and commutators. As a result, BLDC motors have many advantages such as their higherspeedranges, higher efficiency, better speed versus torque characteristics, long operating life and noiseless operation. However, this motors demand a complex design in control and power circuits. Basically, in order to implement the current control loop, it is necessary to measure current in at least 2 phases of 3 phases and use d ifferent variable-frequency pulse modulation methods such as current control with delay range algorithm. The paper proposes the design for Cascade Control system which has two control loops of speed and current. The pulse width modulation (PWM) speed control with fixed frequency is considered as appropriate to applications of microcontrollers. In current control loop, DC-link current acts as feedback signal, which enables to reduce the number of current sensors and be suitable for microcontrollers. The eff iciency of the proposed controllers is demonstrated through a range of simulation results and experimental results for BLDC motors.
机译：无刷直流电动机（BLDC）由于高启动转矩以及电刷和换向器的缺席而被广泛使用。结果，BLDC电动机具有许多优势，例如，其更高的速度范围，更高的效率，更好的速度与转矩特性，更长的使用寿命和无噪音的运行。但是，这种电动机需要控制和电源电路中的复杂设计。基本上，为了实现电流控制环路，有必要测量三相中至少两个相中的电流，并使用不同的可变频率脉冲调制方法，例如具有延迟范围算法的电流控制。本文提出了具有速度和电流两个控制回路的串级控制系统的设计。具有固定频率的脉冲宽度调制（PWM）速度控制被认为适合微控制器的应用。在电流控制回路中，直流母线电流用作反馈信号，这可以减少电流传感器的数量，并适合微控制器。通过BLDC电机的一系列仿真结果和实验结果证明了所提出控制器的效率。

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