Multilevel inverters are in favor of academia as well as industry in the recent decade for high-power and medium-voltage applications. In addition, they can synthesize switched waveforms with lower levels of harmonic distortion compared to a two-level converter. Multilevel converters have received increased interest recently as a result of their ability to generate high quality output waveforms...

AbstractThe low common mode voltage vector modulation technique for the three-level cascaded voltage source inverter is presented in the paper. The large number of available states for multilevel inverters can make implementation vector control strategies complicated. The main characteristic of the proposed modulation technique is its simplicity of implementation due to the fact that any availa...

 Traditional 2-level high-frequency pulse width modulation (PWM) inverters for motor drives have several problems associated with their high frequency switching which produces common-mode voltage and high voltage change (dV/dt) rates to the motor windings. Multilevel inverters solve these problems because their devices can switch at a much lower frequency. Two different multilevel topologies a...

Abstract – In this paper, a generalized power loss algorithm for multilevel neutral-point clamped (NPC) PWM inverters is presented, which is applicable to any level number of multilevel inverters. In the case of three-level inverters, the conduction loss depends on the MI (modulation index) and the PF (power factor), and the switching loss depends on a switching frequency, turn-on and turn-off ...

In recent years, voltage source multilevel inverters are being applied extensively in industry as they have many advantages compared to conventional two level inverters. Some of these advantages such as higher output voltage at low switching frequency, low voltage stress (dv/dt), lower Total Harmonic Distortion (THD), less Electro-Magnetic Interference (EMI), smaller output filter and higher fu...

single phase diode clamped multilevel inverter Department of.This paper presents a single phase multilevel inverter for using as a voltage harmonic source. First, a single phase multilevel inverter system is presented and.The structure of the multilevel inverter using cascaded-inverters with separated dc. single phase multilevel inverter 5 Single-phase configuration of an m-level cascaded inver...

This paper proposes a single-phase seven-level inverter for grid-connected photovoltaic systems, with a novel pulse width-modulated (PWM) control scheme. Three reference signals that are identical to each other with an offset that is equivalent to the amplitude of the triangular carrier signal were used to generate the PWM signals. The inverter is capable of producing seven levels of output-vol...

Multilevel inverters have become more popular over the years in electric high power application with the promise of less disturbances and the possibility to function at lower switching frequencies than ordinary two-level inverters. Multilevel inverters has been introduced as static high-power inverters for medium to high voltage applications such as large electric drives, reactive power compens...

An overview of overcurrent and overvoltage CSI faults is presented and strategies, how to protect a CSI equipped with IGBT power switches against these failures are developed and explained. The shown strategies and the related circuits are applicable at low expense and require only minor changes in the CSI and its control.