Detailed Analysis of DC Choppers and An Example of PMDC Motor Speed Control

Authors : Muhammed Reşit Çorapsiz, Bünyamin Alim, Hakan Kahveci

Pages : 16-36

View : 18 | Download : 10

Publication Date : 2018-05-31

Article Type : Research

Abstract :DC-DC converters have recently been started to be used frequently in power electronics applications in parallel with the development of semiconductor technology. It is possible to encounter frequently to these converters, which are basically divided into two groups as DC choppers and switching regulators, in transport vehicles, chargers and physically small electronic devices. Also, choppers are one of the effective methods used to control of DC motor. In this paper, a detailed analysis of DC choppers, a type of DC-DC converters, has been performed. Firstly, DC choppers operating in the 1 st , 2 nd , 3 rd and 4 th quadrants have been designed separately. Secondly, a converter model operating in both the 1 st quadrant and the 3 nd quadrant has been designed by combining the 1 st and 3 rd quadrant converters due to the fact that two-quadrants or four-quadrants control can be performed by combining the quadrants. Finally, all of the simulation models have been designed in the Matlab/SIMULINK environment and the current and voltage components of the converters have been measured. Furthermore, an example of DC motor speed control with a chopper having one quadrant have been given as an example to the application areas of the choppers. Consequently, it has been observed that the performance of the chopper fed control techniques is also quite high compared with the DC motor control techniques in the literature.
Keywords : DC Chopper, PMDC Motor Control, Armature Voltage Control, Pulse Width Modulation (PWM)