Reduction of harmonics in brushless DC motor drive technology essay
Generated by a brushless DC motor drive of an electric torque tool Jerzy Baranowski Tomasz Drabek, Paweł Piatek˛ and Andrzej Tutaj Citation: Baranowski, J. Drabek, T. Piatek,˛ P. Tutaj, A. Diagnosis and mitigation of electromagnetic interference generated by a brushless DC motor drive of an electric coupling tool. This paper aims to model and analyze the torque ripple caused by the spatial harmonics in a brushless DC BLDC motor. Initially, a general mathematical model of the BLDC motor is introduced, which assumes an ideal trapezoidal back EMF. Then, the improved back EMF model including the spatial harmonics was derived. This study focused on the efficiency improvement and acoustic noise reduction of brushless DC BLDC motors by reducing the current harmonics using a novel BLDC commutation method. This work addresses the problem of mitigating the effects of gear torque in permanent magnet synchronous motors, especially brushless motors, which is an important problem in precision electric drive applications. In this work, a method to mitigate the effects of gear torque based on the use of a nonlinear automaton is proposed. This article discusses the direct torque control of a brushless DC motor. injecting the triangular waveform and using the PI controller to reduce. the torque and obtain a constant switching. DC motor drive used without DC link capacitor. But the reactions take longer to settle and also cause more ripples. The design of a digital current control applied to a variable speed, low induction brushless DC motor drive was presented in 19. 1. Introduction. In recent years, brushless DC BLDC motors have been widely used to drive the optical mirror rotation in the optomechanically scanned system OMSS of the scanning hyperspectral imaging spectrometer ASHIS, 1,2,3. Thanks to the advantages of simple structure, good performance of torque-speed, "Comparison of brushless DC motors with trapezoidal and sinusoidal backing", in Proc. Canadian Conference on Electrical and Computer Engineering, 2011, pp. 803-806. Brushless DC BLDC motor drives have been witnessing an increasing demand in various industrial applications in recent times. One of the main advantages of these motors is that they can be controlled over a wide frequency range. Harmonic mitigation plays a crucial role in improving drive performance and further extends motor life. The commutation torque ripple is an important factor affecting the performance of brushless DC BLDC motor drives. To suppress this torque ripple, an alternating conduction control strategy is applied. Brushless DC motors are widely used in both industrial and non-industrial applications. The commercialization of these drives by reducing their price and increasing reliability is among the. Based on the traditional BLDC motor drive system, 11-13 added some components to create a capacitor inductor diode cell, buck converter and hybrid converter respectively. Recently, model-based predictive control and optimization control methods have been successfully implemented for torque ripple reduction in BLDC drive systems. Brushless DC motors BLDCM have the problem of high torque ripple due to it