| Paper Details: | Downloads: 583 |
| Serial Number: | P1111130671
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| Title: | Reduction of Common Mode Voltage using Space Vector Based PWM Techniques for Induction Motor Drives
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| Authors: | V. Anantha Lakshmi and T. Brahmananda Reddy and V. C. Veera Reddy and M. Surya Kalavathi
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| Abstract: | In conventional space vector pulse width modulation (CSVPWM), the complexity involved in calculation of sector and angle information is more. Moreover common mode voltage (CMV) is more due to usage of zero voltage vectors Vo and V7. To reduce CMV and complexity involved in CSVPWM algorithm, this paper presents a simplified active zero state PWM algorithms (AZPWM) using the concept of imaginary switching times in which actual switching times are calculated from the sampled phase voltages. In the proposed approach, for the reduction of CMV instead of using zero voltage vectors two active opposite voltage vectors with equal time duration are utilized with two adjacent active voltage vectors to compose required reference voltage vector. Though these AZPWM methods reduce the computational burden involved in calculation, they still suffer from steady state ripples in torque, flux and current. To reduce the ripples in steady state, a hybrid PWM (HPWM) technique is developed in which stator flux ripple analysis is done for all the AZPWM sequences. To validate the proposed PWM algorithms, numerical simulation studies have been carried out v/f controlled induction motor drive using MATLAB-Simulink and results are presented and compared
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| Keywords: | imaginary switching times, induction motor drives, PWM inverter, SVPWM,CMV variations
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| Journal/Conference: | International Journal of Automatic Control and System Engineering
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| Volume: | 11
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| Issue: | 2
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| Submission Date: | 7/29/2011 12:00:00 AM
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| Review Date: | 8/26/2011 12:00:00 AM
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| Publishing Date: | 9/10/2011 12:00:00 AM
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| Article Downloads: | 583
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