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DC link voltage control method in the sinusoidal current drive system for dental hand-piece PMSM  

Jeon, Geum-Sang (Micronx)
Park, Jae-Seung (KIT Electronic Engineering)
Park, Sang-Uk (KIT Electronic Engineering)
Kim, Sang-Hee (KIT Electronic Engineering)
Ahn, Hee-Wook (KIT Electronic Engineering)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.12, no.4, 2013 , pp. 16-21 More about this Journal
Abstract
This paper presents a DC link voltage control method to reduce the ripple current and the switching loss in the sinusoidal current drive system for the wide-speed range PMSM. The DC link voltage of the three phase inverter in the sinusoidal current drive system is designed by the back-EMF voltage at maximum speed of the PMSM. In general, the drive systems have used the constant DC link voltage without reference to the motor speed. The current ripple causes hysteresis loss and makes noise. In addition, the switching loss on the inverter increases in proportion to the rise in the DC link voltage. In this paper, we propose the variable DC link voltage control method to reduce the current ripple in the PMSM drive system. We show reduction effect of the current repple and the switching loss through simulation results.
Keywords
Wide Speed range; PMSM Drive; Current ripple; DC link voltage control;
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