Indian Journal of Science and Technology

Abstract

Background/Objectives: To minimize the high frequency current and torque ripples Space Vector Pulse Width Modulation (SVPWM)technique is applied with the Direct Torque Control(DTC)technique which is the usual control technique applied earlier. Methods/Statistical Analysis: The Space Vector pulse width modulation technique is implemented in MATLAB through SIMULINK library. And for controlling the torque directly and flux indirectly Park’s and Clark’s transformations are used. And the results are verified. Findings: A constant switching frequency DTC based space vector modulation technique has the capability to improve the performance of drive by reducing the disturbances in the torque and stator flux linkages. Application/Improvements: BLDC motors find applications in every segment of the market. Automotive, appliance, industrial controls, automation, aviation and so on. And with Space Vector Pulse Width Modulation technique the current and torque characteristics have improved. And the performance of motor also increases.
Keywords: Clark’s Transformation, Direct Torque Control, Indirect Flux Control, Park’s Transformation, Space Vector Pulse Width Modulation technique (SVPWM)