Analysis of Line to Ground Fault in Inverter FED IM Drive System

Bhawana  Negi; Vivek  Sharma; Pooja  Kholia

Bhawana Negi Department of Electrical Engineering, Graphic Era University, Dehradun, Uttarakhand, India
Vivek Sharma Department of Electrical Engineering, Graphic Era University, Dehradun, Uttarakhand, India
Pooja Kholia Department of Electrical Engineering, Graphic Era University, Dehradun, Uttarakhand, India

Keywords: FFT, Fault, Inverter, MOSFET

Abstract

Inverter configuration is presented for the Induction Motor drive. One inverter is design for the step-down voltage and the second inverter is designed for the step-up voltage. PWM use to provide the gate signal to the MOSFET in the circuit.The inverter and the induction motor used as industrial appliances, so it is important to monitor and analyse the fault of the inverter output. While doing the conversion of ac to dc and dc to ac using the power electronics device the harmonics exist. Due to the malfunction in the VSI and CSI the faults are introduced. The current waveform is taken from each phase and the spectrum is analysed. The harmonic analysis with the help of FFT transform is carried out for the short circuit as well as normal condition.The simulation of the VSI and CSI using MATLAB is compared for both conditions i.e. without fault and line to ground circuit faults.

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Author Biographies

Bhawana Negi, Department of Electrical Engineering, Graphic Era University, Dehradun, Uttarakhand, India

Bhawana Negi Completed her M-TECH in Control System from Graphic Era University, Dehradun, India (2014-16). She has completed B-TECH in Electrical and Electronics Engineering from Graphic Era University, Dehradun, India (2010-14). Her research interest includes fault analysis of inverter fed Induction Motor Drive System.

Vivek Sharma, Department of Electrical Engineering, Graphic Era University, Dehradun, Uttarakhand, India

Vivek Sharma received his M.E. degree in Electrical and Electronics Engineering from Anna University, Chennai, India in 2011. He is presently working as Assistant Professor in Electrical and Electronics Department, Graphic Era University, Dehradun, India. His area of research interest includes power electronics and drives.

Pooja Kholia, Department of Electrical Engineering, Graphic Era University, Dehradun, Uttarakhand, India

Pooja Kholia Completed her M-TECH in Control System from Graphic EraUniversity, Dehradun, India (2014-16). She has completed B-TECH in Instrumentation & Control Engineering from Graphic Era University, Dehradun, India(2005-09). Her research interest includes Delay Approximation of the controller design.

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