Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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Subject: search.filters.subject.BLDC motor drive

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    Review of developments in BLDC motor controllers along with study of four-quadrant operation and active Power Factor correction
    (Institute of Electrical and Electronics Engineers Inc., 2016) Krishnan, T.V.; Samskrit; I Vittal, K.P.
    This paper presents a review on recent developments in BLDC motor controllers and studies on four quadrant operation of BLDC drive along with active PFC. The main areas reviewed include Sensor-less control, Direct Torque Control (DTC), Fuzzy logic control, controller for four quadrant operation and active Power Factor Corrected (PFC) converter fed BLDC motor drive. A comprehensive study has been done on four quadrant operation and active PFC converter fed BLDC motor drive with simulation in MATLAB/SIMULINK. The proposed control algorithm for four quadrant operation detects the speed reversal requirement and changes the quadrant of operation accordingly. In PFC converter fed BLDC motor drive, a Boost converter working in continuous current mode is designed to improve the supply power factor. © 2015 IEEE.
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    Design of robust H-infinity speed controller for high performance BLDC servo drive
    (Institute of Electrical and Electronics Engineers Inc., 2017) Krishnan, T.V.D.; Krishnan, C.M.C.; Vittal, K.P.
    In Brushless DC (BLDC) motors, commutation is done externally by using a three phase inverter and therefore need more complex control algorithm as compared to brushed DC motors. BLDC motors are found to be the most suitable actuator for high performance servo drive used in robotics, industrial automation, automobiles, aerospace etc. The motor controller must adapt to the time varying motor characteristics and maintain the performance in its long service life. The controller also should be robust against external disturbances like load disturbances, measurement noise etc. This paper presents the design of robust H∞ speed controller for BLDC servo drive to address the problems mentioned above. The H∞ speed controller is designed and simulations are carried out in MATLAB/SIMULINK and its performance is compared with a PI controller. © 2017 IEEE.