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MAT18 A voltage controlled adjustable speed PMBLDCM drive using a single-stage PFC half-bridge converter This paper appears in: Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE Issue Date : 21-25 Feb. 2010 On page(s): 1976 - 1983 ISSN : 1048-2334 Print ISBN: 978-1-4244-4782-4 References Cited: 14 INSPEC Accession Number: 11204654 Digital Object Identifier : 10.1109/APEC.2010.5433505 Date of Current Version : 18 March 2010 ABSTRACT In this paper, a 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)drive. The front end of this PFC converter is a diode bridge rectifier (DBR) fed from single-phase AC mains. 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 through a 1.5 kW, 1500 rpm PMBLDC motor. The evaluation results of the www.WineYardProjects.com Ph: 040 – 6464 6363, 6625 6695, 888 5555 212 Singh, S.; Singh, B.; Electr. Eng. Dept., Indian Inst. of Technol. Delhi, New Delhi, India MAT18 proposed speed control scheme are presented to demonstrate an improved efficiency of the www.WineYardProjects.com Ph: 040 – 6464 6363, 6625 6695, 888 5555 212 proposed drive system with PFC feature in wide range of the speed and an input AC voltage.