Switching Losses And Harmonic Investigations In Multi-Level Inverter

S.Sri  Matha; P.Thirumala

Switching Losses And Harmonic Investigations In Multi-Level Inverter

Authors: S.Sri Matha, P.Thirumala

Unique Paper ID: 144695
Volume: 4
Issue: 2
PageNo: 172-178

Keywords: Harmonics Multilevel inverters Pulse width modulation Switching losses Total harmonic distortion.

Abstract:
Use of conventional two-level pulse width modulation (PWM) inverters provide less distorted current and voltage but at the cost of higher switching losses due to high switching frequencies. Multilevel inverters are emerging as a viable alternative for high power, medium voltage applications. This paper compares total harmonic distortion and switching losses in conventional two-level inverters with multilevel inverters (three-level and five-level) at different switching frequencies. An optimized switching frequency has been obtained for a lower level of total harmonic distortion and switching losses. Diode-clamped, three-phase topology is considered for study. A sinusoidal PWM technique is used to control the switches of the inverter. Simulation study confirms the reduction in harmonic distortion and switching losses as the number of the levels increases.

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Cite This Article

ISSN: 2349-6002
Volume: 4
Issue: 2
PageNo: 172-178

Switching Losses And Harmonic Investigations In Multi-Level Inverter

Available:https://ijirt.org/Article?manuscript=144695

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