Proposed Commutation Method for Performance Improvement of Brushless DC Motor

Abstract

This study focused on the efficiency improvement and acoustic noise reduction of brushless DC (BLDC) motors by reducing current harmonics using a novel BLDC commutation method. To achieve these goals, we designed an improved 150° commutation method for a three-phase permanent magnet BLDC motor that can improve the current waveform. Although the 120° commutation method is generally employed for BLDC motors, an improved 150° commutation method is introduced to operate the BLDC with increased efficiency and acoustic noise similar to a brushless AC motor. This study investigated the attributes of various commutation methods, both theoretically and experimentally, to determine the optimal commutation method. The results of this study indicate that the improved 150° commutation method is optimal in terms of harmonic attributes and reduced torque ripple, allowing it to improve motor efficiency and reduce acoustic noise.

Performance Evaluation of Brushless Direct Current Motor Control Methods through Low-Cost Microcontroller-Based Real-Time Experiments

“…The commutation strategies are crucial in the selection of an open-loop starting method, especially in battery-powered applications such as drones. Also, the efficient use of energy sources is an important issue addressed by researchers [15], [16]. With this motivation in mind, the power consumption of frequently used commutation methods such as 120°, 180°, 150°, and DDS-based SPWM, which are detailed in the following sections, are experimentally tested in a real-time environment.…”

Modelling and Performance Analysis of an Autonomous Marine Vehicle Powered by a Fuel Cell Hybrid Powertrain

“…In the present work, among the different commutation strategies, the communication with Hall sensors is performed, given by the BLDC motor used [44,45]. In brief, there are three Hall sensors (H 1 , H 2 , and H 3 in Figure 6) on the motor at an angle of 120 • , which detect the magnetic field of the control magnet on the shaft.…”

“…The former is a rule-based strategy, capable of providing a vector that contains phase voltage details, starting from the hall sensor signals. For example, a rule is shown in the following sentence: In the present work, among the different commutation strategies, the communication with Hall sensors is performed, given by the BLDC motor used [44,45]. In brief, there are three Hall sensors (H1, H2, and H3 in Figure 6) on the motor at an angle of 120°, which detect the magnetic field of the control magnet on the shaft.…”