Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title High Power Factor Control of High-speed Single-phase BLDC Motor
Authors Wook-Jin Lee ; Bumun Jung
DOI 10.6113/TKPE/2016.21.2.144
Page pp.144-149
ISSN 1229-2214
Keywords Single-phase BLDC motor; Power factor corrector; High-speed motor; Grid current harmonics; Power control; Fan motor
Abstract This paper presents a power control method of high-speed single-phase BLDC motor. Most electric appliances require a power factor corrector (PFC) to mitigate grid current harmonics. However, the reactive components and power semiconductors in the PFC increase system cost and dimension. In this paper, a new motor drive system for a high-speed single-phase BLDC motor is proposed, which can decrease grid current harmonics without PFC by directly manipulating motor power and eliminating bulky electrolytic dc-link capacitor. Given that the proposed motor power control method does not require motor current controller, no current sensor is necessary. Moreover, the proposed algorithms can be easily implemented using a low-cost micro-controller. The effectiveness of the proposed power control method is verified by experiments.