A novel Z-source three-level inverter based on coupled inductors is proposed. The two inductors in traditional Z-source impedance network are replaced by two coupled inductors. The operating principle is described and the equations of boost factor and voltage stresses are deduced. Comparisons are made with other Z-source three-level inverters, especially the multicell switched inductor Z-source...

1.1 HARMONICS IN ELECTRICAL SYSTEMS ............................................................................................ 1 1.2 CONVENTIONAL TWO-LEVEL AND THREE-LEVEL VOLTAGE SOURCE INVERTER ............................... 2 1.3 MULTILEVEL VOLTAGE SOURCE INVERTER..................................................................................... 5 1.3.1 Diode-Clamped Multilevel Inverter...

This paper compares the performance of direct torque control of induction motor using two-level and three-level inverters. The main objective of this paper is to improve the performance of direct torque control of induction motor using three-level inverter without affecting its simplicity. The basic switching table based direct torque control of induction motor using two-level inverter is first...

This study presents space vector-based quasi-two-level operation of a diode-clamped multilevel inverter which improves dc link utilisation and output voltage quality, and avoids the dc link capacitor voltage balancing problem experienced with standard multilevel operation. Beside a review of quasi-two-level operation and the capacitor voltage balancing method, the study presents a detailed disc...

Multilevel inverters with space vector pulse width modulation strategy are gained importance in high power high performance industrial drive applications.This paper presents a simplified space vector PWM method for a two-level and three level inverter The threelevel inverter has a large number of switching states as compared to two level inverter. In the proposed scheme, three-level space vecto...

This paper focuses on developing a low cost and a low harmonic traditional three level inverter (H-Bridge) using pulse pattern. Multilevel inverter as compared to traditional three level inverters have advantages like low harmonic contents and low electromagnetic interference (EMI) outputs and can operate on several voltage levels. The drawbacks includes: The requirement of isolated power suppl...