Characteristics of Independent Two Induction Motor Drives Fed by a Four-Leg Inverter

This paper presents the experimental results of the independent drive characteristics of two three-phase induction motors (IMs) fed by a four-leg inverter (FLI). The FLI is a single inverter that can drive two three-phase ac motors independently. The inverter consists of four legs and two capacitors...

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Veröffentlicht in:IEEE transactions on industry applications 2011-09, Vol.47 (5), p.2125-2134
Hauptverfasser: Matsuse, K., Kezuka, N., Oka, K.
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Kezuka, N.
Oka, K.
description This paper presents the experimental results of the independent drive characteristics of two three-phase induction motors (IMs) fed by a four-leg inverter (FLI). The FLI is a single inverter that can drive two three-phase ac motors independently. The inverter consists of four legs and two capacitors connected in a series. The U and V phases of both motors are connected in each leg, respectively, whereas the W phase of both motors is connected in the neutral point of two-sprit capacitors. The pulsewidth modulation technique in three-phase voltage source inverter is not directly applicable for the FLI because only two phases must be modulated. Then, this paper also analyzes about the neutral point potential of two-sprit capacitors and inverter output voltage. Next, the modulation technique in the FLI is also shown. The experimental results demonstrate the characteristics of two IM independent drives and the validity of those analytic results.
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subjects AC motors
Capacitors
Electric potential
Four-leg inverter (FLI)
Induction motors
Inverters
Leg
Modulation
Motors
Nickel
Phases
Pulse width modulation
pulsewidth-modulation (PWM) technique
Studies
Switches
two induction motor (IM) drives
Voltage
title Characteristics of Independent Two Induction Motor Drives Fed by a Four-Leg Inverter
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