ABSTRACT
This
paper introduces Space Vector Pulse Width Modulation (SVPWM) Technique in
detail and its implementation in MATLAB. Performance investigation of Sinusoidal
Pulse Width Modulated and Space Vector Modulated Voltage Source Inverter (VSI)
fed Induction Motor (1M) drive has done and their simulation results are compared
with each other. Also FFT analysis for Sinusoidal Pulse Width Modulated and
Space Vector Pulse Width Modulated VSl fed 1M drive is done and compared with each
other. 20 HP 1M is used. The study confirms that 1M gives improved performance
when it is fed from Space Vector Pulse Width Modulated VS1.
KEYWORDS
1. Space
Vector Pulse Width Modulation (SVPWM)
2. Sinusoidal
Pulse Width Modulation (SPWM)
3. Two
Level Voltage Source Inverter (VSI)
4. Total
Harmonic Distortion (THD)
5. Three
Phase Induction Motor (1M).
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
Figure
1. Block diagram of SVPWM
EXPECTED SIMULATION RESULTS
Figure
2. (a) Line to Line Voltage (Vab) of Space Vector Modulated VSI (b) Stator
current (i,..) of IM (c) Electromagnetic Torque (Te) of IM (d) Rotor Speed (Nm)
of 1M.
Figure
3 (a) Line to Line Voltage (Vab) of Sinusoidal Pulse Width Modulated VSI (b)
Stator current (i,a) of IM ( c) Electromagnetic Torque (Te) of IM (d) Rotor
Speed (Nm) of IM
Figure
4. FFT Analysis of Line to Line Voltage (Vab) of (a) Sinusoidal Pulse Width
Modulated VSL (b) Space Vector Modulated VSL
CONCLUSION
The
simulation study of SVPWM technique was presented and compared with SPWM
technique. It was found that by using SVPWM technique, THD content present in
inverter output voltage is less as compared with SPWM technique. Table III
shows that the utilization of DC bus is l3.55% more for SVPWM compared TO SPWM
technique. i. e. SVPWM technique achieved a better utilization of DC bus as
compared with SPWM technique. The performance investigation of SPWM inverter
and SVPWM inverter fed 1M drive was done. Table IV shows, in case of SVPWM
increased rotor speed with reduced error band achieved as compared with SPWM.
Also settling time is less for SVPWM as compared with SPWM. It was conclude that
results for SVPWM technique are more convenient than SPWM technique.
REFERENCES
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[2] S. Fukuda, Y. Iwaji, and H. Hasegawa,
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[3] W. Kolar, H. Ertl, and F. C. Zach,
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[4] Joachim Holtz,. "Pulsewidth modulation
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[5] B. H. Kwon and B. D. Min, "A fully
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