BrushLess Direct-Current (BLDC) motors are characterized by high efficiency and reliability due to the fact that the BLDC motor does not require power to the rotor. The rotor of the BLDC motor consists of permanent magnets. When examining the waveform of the current supplied to the motor windings, significant current ripple was observed within one power cycle, where the optimum value would be the constant value of this current during one power cycle. The variability of this current in one motor supply cycle results from the variability of the electromotive force induced in the motor winding. The paper presents a diagram of the power supply system consisting of an electronic commutator and a DC/DC converter made by the authors, and a proposed modification of the power supply system reducing the current pulsation of the motor windings and thus the possibility of reducing energy losses in the motor windings. The paper presents numerous results of measurements which showed a significant reduction in energy losses in the case of low-load operation.

中文翻译：

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电流脉动对BLDC电机参数的影响

BrushLess直流（BLDC）电动机的特点是效率高且可靠性高，因为BLDC电动机不需要向转子供电。BLDC电机的转子由永磁体组成。在检查提供给电动机绕组的电流的波形时，在一个功率周期内观察到明显的电流纹波，其中最佳值将是一个功率周期内该电流的恒定值。该电流在一个电机供电周期中的变化是由电机绕组中感应的电动势的变化引起的。本文提出了一个由电子换向器和作者所制造的DC / DC转换器组成的电源系统图，以及对电源系统的建议的修改，其减小了电动机绕组的电流脉动，从而减小了电动机绕组中的能量损失的可能性。本文介绍了许多测量结果，这些结果表明，在低负载运行情况下，能量损耗显着降低。