Implementation of Chopper Fed Speed Control of Separately Excited DC Motor Using PI Controller

Author(s):  
R. Nagarajan ◽  
◽  
S. Sathishkumar ◽  
S. Deepika ◽  
G. Keerthana ◽  
...  
Keyword(s):  
Dc Motor ◽  
Author(s):  
Aruna K ◽  
◽  
Pravin M.R ◽  
Ramachandran J ◽  
Sudheer S ◽  
...  

2014 ◽  
Vol 573 ◽  
pp. 19-25
Author(s):  
I. Kavitha ◽  
S. Selvaperumal ◽  
P. Nedumal Pugazhenthi ◽  
A. Mohamed Rajithkhan ◽  
R. Jagatheesan

The idea orients to develop a PI controller for closed loop speed control of chopper fed dc drive. PI controller is one of the most preferred controller for speed control of dc drive, which can be easily understood and implemented in practice. The speed of the chopper fed separately excited dc motor can be regulated from below and upto rated speed by using a chopper as a converter. The signal corresponding to the speed error of the motor and change in speed error are given as inputs to the PI controller. The controller output provides the required gating signal that is used to vary the duty cycle of chopper. The chopper firing circuit receives signal from controller, gives variable voltage to the armature of the motor for achieving desired speed response. Modeling of chopper fed dc motor is done. Two loop control system is designed, one for current and another for speed. The complete model of proposed system is simulated using MATLAB (SIMULINK). Also the performance of the simulated model is investigated by using various controller tuning methods.


2010 ◽  
Vol 33 ◽  
pp. 612-617
Author(s):  
Bing Xing Tang ◽  
Zhang Jun Wang

The nonlinear speed control problem of a series dc motor was considered. Based on the nonlinear model built by a hybrid method, in which the local stability was proved by the Lyapunov’s first method to ensure the meaningfulness of the identification of the steady-state-about plant parameters, a sliding-mode control law, with a load torque Luenberger observer and an angular acceleration estimator, was derived theoretically, which effectiveness demonstrated by simulations and experiments. In order to reduce the steady-state error caused by the discrete implementation, a modified sliding-mode control with an auxiliary PI controller was proposed. The experiments show that the modified sliding-mode control law is superior to the PID regulator and the ordinary sliding-mode control law.


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