DESIGN AND SIMULATION OF THREE PHASE FIVE LEVEL AND SEVEN LEVEL INVERTER FED INDUCTION MOTOR DRIVE WITH TWO CASCADED H-BRIDGE CONFIGURATION

This paper deals with study of Three phase Five Level and Seven Level inverter fed induction motor drive . Both five level and seven level are realized by cascading two H- bridges. The poor quality of voltage and current of a conventional inverter fed induction machine is due to the presence of harmonics and hence there is significant level of energy losses. The Multilevel inverter is used to reduce the harmonics. The inverters with a large number of steps can generate high quality voltage waveforms. The higher levels can follow a voltage reference with accuracy and with the advantage that the generated voltage can be modulated in amplitude instead of pulse-width modulation. An active harmonic elimination method is applied to eliminate any number of specific higher order harmonics of multilevel converters with unequal dc voltages. The simulation of three phase five and seven level inverter fed induction motor model is done using Matlab/Simulink. The FFT spectrums for the outputs are analyzed to study the reduction in the harmonics.

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ANALYSIS OF CURRENT HARMONICS IN A DECOUPLED SVPWM CONTROLLED DUAL TWO LEVEL INVERTER FED OPEN END WINDING INDUCTION MOTOR DRIVE

International Journal of Electronics and Electical Engineering ◽

10.47893/ijeee.2013.1066 ◽

2013 ◽

pp. 51-55

Author(s):

K.SRI GOWRI ◽

M. ABDUL HAKEEM ◽

S. VENKATA MAHESH

Keyword(s):

Induction Motor ◽

Pulse Width Modulation ◽

Reference Voltage ◽

Motor Drive ◽

Induction Motor Drive ◽

Space Vector ◽

Current Harmonics ◽

Three Phase ◽

Vector Modulation ◽

Open End Winding

Pulse width modulation has been one of the most intensively investigated areas of power electronics for many years now, and the number of combinations seems to be endless. However, according to a hierarchal consensus, Space Vector Modulation techniques are ranked higher in order of merit, based on harmonic performance. In this paper, Space Vector PWM Switching scheme is employed for a dual two level inverter feeding an Induction motor from both ends (open end winding). The decoupled SVPWM is employed for the dual-inverter scheme in order to realize the reference voltage vector. The Gating pulses are correspondingly generated for the dual inverters in order to realize the reference voltage, and the respective voltages are fed to 1kW open end windings of an induction motor drive. The harmonic content of the three phase currents in the motor are analyzed with an appropriate variation in its modulation index. Thus the performance in terms of harmonic analysis is carried out using Matlab/SIMULINK for an open end winding induction motor drive.

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Experimental analysis of various space vector pulse width modulation (SVPWM) techniques for dual three-phase induction motor drive

International Transactions on Electrical Energy Systems ◽

10.1002/etep.2678 ◽

2018 ◽

Vol 29 (1) ◽

pp. e2678 ◽

Cited By ~ 6

Author(s):

K. A. Chinmaya ◽

Girish Kumar Singh

Keyword(s):

Induction Motor ◽

Experimental Analysis ◽

Pulse Width ◽

Pulse Width Modulation ◽

Motor Drive ◽

Induction Motor Drive ◽

Space Vector ◽

Three Phase

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Generalized Approach for DCPWM Based Dual Inverter Fed OEWIM-DTC Drive

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.b6250.0710221 ◽

2021 ◽

Vol 10 (2) ◽

pp. 151-157

Author(s):

M Nalini Devi ◽

◽

R Srinu Naik ◽

Keyword(s):

Induction Motor ◽

Pulse Width ◽

Pulse Width Modulation ◽

Direct Torque Control ◽

Torque Control ◽

Motor Drive ◽

Switching Frequency ◽

Induction Motor Drive ◽

Three Phase ◽

Simulation Results

A generalized procedure of decoupled pulse width modulation (DCPWM) based on Method called Direct Torque Control (DTC) for Open Ended Winding Induction motor drive (OEWIM) is anticipated in this paper. This drive topology uses two isolated dc sources with equal magnitudes, feeding two standard two level three-phase inverters. To overcome the complexity in classical space vector pulse width modulation (SVPWM) algorithm, a simple generalized approach is presented in this research by using the phase voltages. With this procedure, various PWM algorithms can be generated by varying a constant value. The dual inverters are operating independently with half of the switching frequency. To show the usefulness of proposed PWM fed DTC drive, simulation results analysis has been carried out by using MATLAB and results obtained.

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