The Diode Clamped Multilevel Inverter (DCMLI) is an attractive type multilevel inverter due to its robustness. This paper discusses new modulation strategies for a single phase five level H-bridge type DCMLI with reduced components as compared to conventional DCMLI. The chosen multi level inverter is controlled with multicarrier based Sinusoidal Pulse Width Modulation (SPWM) technique with Vari...

A new operational mode for diode clamped multilevel inverters (DCMLI) based on 5-level operation is proposed. This operational mode is based on a new technique called sinusoidal pulse width modulation (SPWM). Such operation aims to avoid the imbalance problem of the DC-link capacitors for multilevel inverters with more than 3-levels. This scheme reduces the DC-link capacitance without introduci...

Multilevel inverters have become more popular over the years in high power medium voltage applications without the use of a transformer and with promise of less disturbance & reduced harmonic distortion. In this paper, two types of multilevel converter in three phase configuration, cascaded H-Bridge multilevel inverter (CMLI) and diode clamped multilevel inverter (DCMLI) of 5 and 7-level are mo...

This paper presents the comparison of various Pulse Width Modulation (PWM) strategies for the three phase Diode Clamped Multi Level Inverter (DCMLI). The main contribution of this paper is the proposal of new modulation schemes with Variable Amplitude (VA) and various new schemes adopting the constant switching frequency and also variable switching frequency multicarrier control freedom degree ...

This work proposes three phase five level Bridge module type Diode Clamped Multilevel Inverter (DCMLI) using various modulating techniques for induction motor load. These Pulse Width Modulating (PWM) techniques include Carrier Overlapping (CO) strategy, Variable Frequency (VF) strategy, Phase Shift (PS) strategy and Sub-Harmonic Pulse Width Modulation (SHPWM) i.e. Phase Disposition (PD) strateg...

This paper focus on the simulation and hardware analysis of a diode clamped multilevel inverter (DCMLI) fed direct torque control (DTC) permanent magnet synchronous motor (PMSM) drive in electric vehicle (EV) application. DTC-PMSM is more used for speed control. The existing DTC PMSM consists flux hysteresis comparators suffers from variable switching frequency ripples. These problems can be so...

The effectiveness of a permanent magnet synchronous motor (PMSM) drive managed by an automatic voltage regulator (AVR) microcontroller using field oriented control (FOC) with space vector modulation (SVM) and diode clamped multilevel inverter (DCMLI) is investigated. Due to its efficacy, FOC would be widely implemented for PMSM speed regulation. primary drawbacks 3-phase classic bridge appear r...

This paper presents a control for a three-phase seven-level diode-clamped multilevel inverter (DCMLI) for photovoltaic (PV) systems which improves DC link utilization, output voltage quality and avoids the DC link capacitor voltage balancing problem experienced with standard multilevel operation. The maximum power point tracking (MPPT) is capable of extracting maximum power from PV array connec...