Open AccessPower quality improvements in a zeta converter for brushless DC motor drives
Author(s) -
Singh Bhim,
Bist Vashist
Publication year - 2015
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2014.0111
Subject(s) - motor drive , dc motor , commutation , voltage , control theory (sociology) , power factor , computer science , engineering , electrical engineering , control (management) , mechanical engineering , artificial intelligence
This study deals with a reduced sensor configuration of a power factor correction (PFC) based zeta converter for brushless DC (BLDC) motor drive for low power applications. The speed of the BLDC motor is controlled by varying the dc‐link voltage of the voltage source inverter (VSI) feeding BLDC motor drive. A low‐frequency switching of the VSI is used for achieving the electronic commutation of BLDC motor for reduced switching losses. The PFC‐based zeta converter is designed to operate in discontinuous inductor current mode; thus utilising a voltage follower approach which requires a single voltage sensor for dc‐link voltage control and PFC operation. The proposed drive is designed to operate over a wide range of speed control with improved power quality at ac mains. The performance of the proposed drive is validated with experimental results obtained on a developed prototype of PFC converter.