Title: PFC Control of Electrolytic Capacitor-less PMSM Drives for Home Appliances
Authors: Tau, Jen-Hau
Tzou, Yin-Yu
電控工程研究所
Institute of Electrical and Control Engineering
Keywords: PMSM;electrolytic capacitor-less;mixed d-q current;sensorless PMSM control;dc-link voltage feedforward;small dc-link capacitor;power factor correction
Issue Date: 1-Jan-2017
Abstract: This paper proposes a mixed dq-control scheme for a sensorless PMSM drive to improve input power factor with an electrolytic capacitor-less bridge rectifier. Instead of using bulky traditional electrolytic capacitor, a very small film capacitor is adopted to achieve high input power factor with improved power density and reliability. However, due to large dc-link voltage fluctuations, deterioration of current control capability inevitably causes large torque ripples with twice grid frequency. Therefore, the proposed control scheme is more appropriate for applications with large-inertia load such as fan and pump systems which can reduce influence of torque ripples. Due to the small value of the dc-link capacitance, the grid input current can be controlled as a mixed d-q current with its instantaneous average current to be synchronized with the grid voltage. By using field oriented control (FOC) with field weakening control, a reference current generator is devised to generate the desired d-q current reference commands. Simulation and experimental verification have been carried out to illustrate the effect of power factor correction with a high reduction of dc-link capacitance.
URI: http://hdl.handle.net/11536/147023
ISSN: 2163-5137
Journal: 2017 IEEE 26TH INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE)
Begin Page: 335
End Page: 341
Appears in Collections:Conferences Paper