A novel technique of dynamic speed control for buck boost converter fed BLDC motor drive

Abstract

This paper mainly impacts on a bridgeless buck boost converter fed Brush Less Direct Current (BLDC) motor drive with Power Factor Correction (PFC) which is low cost and well suitable for low power applications. The speed of the BLDC motor is controlled by adjusting the Voltage Source Inverter's dc link voltage which is then employed along with a distinct voltage sensor. Thus the fundamental frequency switching of VSI operation becomes quite ease with BLDC motor's electronic turn off which provides minimal switching losses. An acceptable performance is attained for speed control having power quality indicators within the allowable limits. To end with the suggested drive's prototype model has been implemented to evaluate and confirm the suggested BLDC motor drive's performance for various speed controls with enhanced AC main's power quality.

Design and Analysis of Boost DC-DC Converter with PI Controller

“…DC Converters are employed in regenerative breaking of DC motors to reciprocate the energy again to the supply. In DC Voltage regulators and also in Current Source Inverter, these DC Converters are used [4]. In this paper, a PI (Proportional Integral) controller is used in the Boost converter which converts DC to DC as well as steps up the supply voltage and provides a constant DC output which is then used for DC Motor Load [5].…”

An Improved Power Factor Correction for Interleaved Flyback Switched Mode Power Supply

“…To convert power from the single-phase ac grid for dc loads, Switched-mode rectifiers are used which should meet severe requirements like high power factor, low EMI noise, higher efficiency and reliability [10]. The major goal in power electronics is the higher efficiency and high value of Power Factor (PF) which can be attained by the switched-mode rectifiers to transfer real power from the ac grids to the dc loads [11]- [12].…”