Design and Analysis of Closed Loop Control of Multilevel SVPWM Inverter Fed PMSM Drive
Lavanya Komma1, Alice Mary Karlapudy2, Saraswathi G3
1Lavanya Komma, Department of EEE, ANITS, Visakhapatnam (A.P), India.
2Alice Mary Karlapudy, Department of EEE, GEC, Krishna (A.P), India.
3Saraswathi G, Department of EEE, JNTUV, Vijayanagaram (A.P), India.
Manuscript received on 15 September 2019 | Revised Manuscript received on 24 September 2019 | Manuscript Published on 10 October 2019 | PP: 809-816 | Volume-8 Issue-6S2, August 2019 | Retrieval Number: F12040886S219/19©BEIESP | DOI: 10.35940/ijeat.F1204.0886S219
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Abstract: Permanent magnet synchronous machines have been universally used over induction machines in variable speed drives. For present trends and future developments, power electronics technology gives the extensive research of multilevel inverters that brings high safety voltages with low harmonic content in comparison with two-level inverter strategies. Multi level inverters implementation can be done by raising the number of power semi conductor controlled switching devices per phase to increase the number of inverter output voltage levels. By increasing the levels, power controlled switching devices and other components are increased, which makes the inverter complex and overpriced. From the above aspects, three-phase three-level inverter strategy is used for high performance and high voltage A.C drives. Multilevel inverter using a space vector pulse width modulation (SVPWM) strategy gives great advantages in high performance A.C drive applications. Various types of control strategies have been recommended for voltage source inverter fed A.C drives. In the proposed work, a PI controller is designed for the outer loop and non-linear controller using a state feedback linearization technique is designed for the inner loop. The closed loop control system for three-level inverter fed Permanent magnet synchronous motor drive employing SVPWM is extensively simulated using MATLAB.
Keywords: Feedback Linearization Technique (FLT), Permanent Magnet Synchronous Motor (PMSM), Space Vector Pulse Width Modulation (SVPWM).
Scope of the Article: Software Analysis, Design and Modelling