Speed control of PMBLDCM drive using Power Factor Correction (PFC) Convertor
Padmini Sahu1, Anurag Singh Tomer2
1Padmini Sahu, CSVTU University/Rungta College of Engineering & Technology, Bhilai, India.
2Anurag Singh Tomer, , CSVTU University/Rungta College Of Engineering & Technology, Bhilai, India.
Manuscript received on May 17, 2012. | Revised Manuscript received on June 25, 2012. | Manuscript published on June 30, 2012. | PP: 400-408 | Volume-1 Issue-5, June 2012. | Retrieval Number: C0222021312/2012©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper aims at an improve speed quality employing buck half-bridge DC-DC converter is used as a single-stage power factor correction (PFC) converter for feeding a voltage source inverter (VSI) based permanent magnet brushless DC motor (PMBLDCM) driven air condition. This PFC converter is front end diode bridge rectifier (DBR) fed from single-phase AC mains and connected to a three phase voltage source (VSI) feeding the permanent magnet brushless DC motor (PMBLDCM). The PMBLDCM is used to drive a compressor load of an air conditioner through a three-phase VSI fed from a controlled DC link voltage. The speed of the compressor is controlled to achieve energy conservation using a concept of the voltage control at DC link proportional to the desired speed of the PMBLDCM. Therefore the VSI is operated only as an electronic commutator of the PMBLDCM. The stator current of the PMBLDCM during step change of reference speed is controlled by a rate limiter for the reference voltage at DC link. The proposed PMBLDCM drive with voltage control based PFC converter is designed, modeled and its performance is simulated in Matlab- Simulink environment for an air conditioner compressor driven PMBLDC motor.
Keywords: PFC, PMBLDCM, Air Conditioner, Buck Half Bridge Converter, Voltage Control, VSI.