Analysis of Z-source inverter for space vector PWM fed 3-phase induction motor

Abstract EN

This paper presents analysis of operation and implementation of Z-source space vector pulse width modulation (SVPWM) inverter fed three phase induction motor.

The Z-source is an alternative power conversion topology that can both buck and boost the input voltage using only passive components.

It uses a unique LC impedance network in the DC link between rectifier and inverter fed induction motor.

It also allows the use of the shoot-through switching state, which eliminates or reduces the dead-times that are used in the conventional inverters.

Therefore, the Z-source inverter can buck and boost voltage to a desired output voltage that is greater than the available input voltage.

In addition, it reduces the harmonics, improves power factor, increases reliability, low cost and highly efficient single-stage structure for buck and boost power conversion.

Theoretical analysis and simulation studies using PSIM software have been performed to demonstrate these new features.