ABSTRACT:
A simulation of a five-level sinusoidal pulse width modulation
(SPWM) rectifier fed D.C motor is proposed. The proposed topology of a
five-level rectifier can be regulate the output voltage using (SPWM) to obtain
variable speed of a D.C motor with constant load torque. The main advantages of
the SPWM rectifier system are to drive a D.C motor with constant and variation
load torque, low harmonic distortion in A.C supply side. The PID speed
controller is used to make constant speed when load torque increase or decrease
about 20% of rated value and to improve the dynamic response of the system. The
five-level SPWM rectifier fed separately excited D.C motor are studied and
simulated under the MATLAB/SIMULINK program.
KEYWORDS:
1.
Five-level rectifier
2.
D.C motor drive
3.
PID speed controller
4.
SPWM
SOFTWARE:
MATLAB/SIMULINK
CONCLUSION:
The
paper presents a study and modeling of a five level rectifier with SPWM
technique as a DC motor driver. Several researches focused on constructing the
circuit of multi-level rectifier with static load (RL). In this study the five
level rectifier system has been tested with a dynamic load as a separately
excited DC motor. The proposed system investigated in case of open loop system
with A disturbance in load torque applied +-20%from rated load torque and that’s
lead to dramatic variation in motor speed with respect to desired speed. Furthermore the effect of
THD for input current was considered. PID controller is applied to the proposed
system with the same disturbance in load torque and the results shows a
constant output speed at desired speed with minimum response percentage error.
REFERENCES:
[1] Muhammad H.
Rashid, "Power Electronics Devices, Circuits, and Applications",
Fourth Edition, ISBN 978-0-13-312590-0, published by Pearson Education, 2014.
[2]
Jun-ichi Itoh, Yuichi Noge, and Taketo Adachi, "A Novel Five-Level Three-Phase
PWM Rectifier With Reduced Switch Count", IEEE Transactions On Power
Electronics, Vol. 26, No. 8, AUGUST 2011.
[3]
N. A. Rahim, J. A. Jalil, "Single-Phase Five-Level PWM Rectifier", Institute
of Research Management & Monitoring, University of Malaya.
[4]
Omar Turath Tawfeeq, "Single Tuned Passive Harmonics Filters Design For A
Buck Type Rectifier D.C Motor Drive Using Fuzzy Controller", International
Journal of Engineering and Innovative Technology (IJEIT) Volume 4, Issue 11,
May 2015.
[5]
Vivek Kumar, AshishPatra, "Application of Ziegler-Nichols method for
tuning of PID Controller", International Journal of electrical and Electronic
Engineers, Vol. No.8, Issue No. 02, July-Dec. 2016.
