scholarly journals Improved PWM-OFF-PWM to Reduce Commutation Torque Ripple of Brushless DC Motor Under Braking Conditions

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 204020-204030
Author(s):  
Qixun Zhou ◽  
Jianhua Shu ◽  
Ziwei Cai ◽  
Quanlong Liu ◽  
Guanghui Du
Keyword(s):  
Torque Ripple ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Brushless Dc ◽  
Commutation Torque Ripple

scholarly journals Commutation Torque Ripple Reduction for Brushless DC Motor Based on an Auxiliary Step-Up Circuit

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 138721-138731 ◽  
Author(s):  
Xuliang Yao ◽  
Jicheng Zhao ◽  
Jingfang Wang ◽  
Shengqi Huang ◽  
Yishu Jiang
Keyword(s):  
Torque Ripple ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Brushless Dc ◽  
Torque Ripple Reduction ◽  
Ripple Reduction ◽  
Commutation Torque Ripple

Analysis and Implementation of a High Boost Ratio DC-DC Converter for Minimizing Commutation Torque Ripple in Brushless DC Motor

2016 ◽  
Vol 7 (2) ◽  
pp. 583
Author(s):  
M. Senthil Raja ◽  
B. Geethalakshmi
Keyword(s):  
Closed Loop ◽  
Torque Ripple ◽  
Dc Motor ◽  
Duty Ratio ◽  
Brushless Dc Motor ◽  
Loop Control ◽  
Brushless Dc ◽  
Control Scheme ◽  
Converter Topologies ◽  
Commutation Torque Ripple

Brushless dc motor still suffers from commutation torque ripple, which primarily depends on transient line current in the commutation interval. In order to control the incoming and outgoing phase currents to change at the same rate during commutation, this paper presents a novel high boost ratio DC-DC circuit topology in the front end of the inverter. With a suitable closed loop control scheme, the proposed high boost ratio DC-DC converter is operated with two different duty ratios one during commutation period and the other during non commutation period. The cause of commutation ripple is analyzed, and the way to adjust the duty ratio for obtaining the desired dc link voltage is introduced in detail. Finally, simulation and experimental results show that, compared with the existing dc–dc converter topologies, the proposed method can obtain the desired voltage much faster and minimize commutation torque ripple more efficiently

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