This paper deals with new hybrid multilevel inverter fed induction motor drive. It focuses on the different topologies to mitigate the common mode voltages, bearing currents and their effects on the drive. In proposed topology, the total harmonic distortion (THD) is reduced with more number of steps in output voltage without using pulse width modulation techniques. The main advantage of this pr...

Abstract—This paper proposed a new modulation strategy to eliminate common mode voltages in multilevel inverters. In this scheme which is explained for a 5-level modular inverter, all voltage vectors with zero common mode voltages can be classified into four categories and each two adjacent categories composed a segment. Synthesized voltage vectors that are an approximation to the reference vec...

In this paper a Near State Pulse Width Modulation (NSPWM) algorithm with reduced switching frequency is presented for vector controlled induction motor drives for reduced common mode voltage/currents. The proposed algorithm utilizes a group of three neighbor voltage vectors to construct the reference voltage space vector. In the proposed algorithm in each sector any one of the phases is clamped...

After giving a summary of investigated passive and active schemes to mitigate common mode problems a modeling approach for the common mode voltage (CM voltage) is presented for three-level rectifiers. A novel Active Commonmode Voltage Cancellation (ACC) scheme is proposed, utilizing the reconstructed CM voltage to derive a simpler driving scheme as presented by previous contributions. The ACC s...

Improving transient voltage stability is one of the most important issues that must be provided by doubly fed induction generator (DFIG)-based wind farms (WFs) according to the grid code requirement. This paper proposes adjusted DC-link chopper based passive voltage compensator and modified transient voltage controller (MTVC) based active voltage compensator for improving transient voltage stab...

This paper proposes the high-frequency mathematical model for common-mode noise voltage of a DC–DC buck converter. The equivalent circuit considering parasitic impedance is proposed, and then path analyzed using this circuit. source generated by switching device divided into trapezoidal ringing sources mathematically modeled. For high accuracy at high-frequency, including difference between ris...