| Paper Details: | Downloads: 599 |
| Serial Number: | P1111026152
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| Title: | CONTROL OF CASCADED MULTILEVEL INVERTER BY USING CARRIER BASED PWM TECHNIQUE AND IMPLEMENTED TO INDUCTION MOTOR DRIVE
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| Authors: | V. Naga Bhaskar Reddy and V. Narasimhulu and Dr. Ch. Sai Babu3
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| Abstract: | Multilevel power conversion technology is a very rapidly growing area of power electronics with good potential for further development. Today, it is hard to connect a single power semiconductor switch directly to medium voltage grids. For these reasons, a new family of multilevel inverters has emerged as the solution for working with higher voltage levels.
A Carrier Based Pulse Width Modulation (CBPWM) Scheme for multilevel inverters is proposed. The proposed PWM scheme generates the inverter leg switching times from the sampled reference phase voltage amplitudes and centers the switching times for the middle vectors, in a sampling interval, as in the case of conventional space vector PWM (SVPWM). The SVPWM scheme, presented for multilevel inverters, can also work in the over modulation range, using only the sampled amplitudes of reference phase voltages. The sinusoidal PWM technique for various modulation indices, Carrier Based PWM technique for the cascaded three-level and five-level inverter fed induction motor are analyzed and discussed. The performance of induction motor is studied in various aspects for various modulating techniques and the results are compared and tabulated. An induction motor model is developed using Simulink and it is fed from a three phase three-level and five-level cascaded inverter. The above said sampled amplitudes of reference phase voltages based SVPWM technique is implemented using MATLAB/SIMULINK.
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| Keywords: | Cascaded Multilevel Inverter, PWM Techniques, Carrier Based PWM, Induction Motor, and Total Harmonic Distortion
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| Journal/Conference: | International Journal of Automatic Control and System Engineering
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| Volume: | 10
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| Issue: | 2
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| Submission Date: | 6/19/2010 12:00:00 AM
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| Review Date: | 8/12/2010 12:00:00 AM
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| Publishing Date: | 8/31/2010 12:00:00 AM
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| Article Downloads: | 599
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