A scheme for a three-level voltage space phasor generation with common-mode voltage elimination is proposed. An open-end-winding induction motor, fed from both ends by two threelevel inverters, which are realised by a cascading two two-level inverter, is used in this configuration. The voltage space vectors of individual three-level inverters, which generate the same commonmode voltage in the i...

Parallel inverters are often used to meet system power requirements beyond the capacity of the largest single structure. They have also been used to reduce harmonics, reduce PWM switching frequency and increase available output voltage or frequency. The type of parallel structure depends on the construction of the load motor, the most prevalent are dual three phase machines, split-phase machine...

The concept of multilevel inverters, introduced about 20 years ago entails performing power conversion in multiple voltage steps to obtain improved power quality, lower switching losses, better electromagnetic compatibility, and higher voltage capability. The benefits are especially clear for medium-voltage drives in industrial applications and are being considered for future naval ship propuls...

There are problems in the limitations of conventional inverters, especially in high-voltage and high-power applications. Recently multilevel inverters are becoming increasingly popular for high-power applications due to their improved harmonic profile and increased power ratings. Several studies have been reported on multilevel inverters topologies, control techniques, and applications. However...

Unified power quality conditioners (UPQCs) allow the mitigation of voltage and current disturbances that could affect sensitive electrical loads while compensating the load reactive power. This paper deals with unified power quality conditioner (UPQC), which aims at the integration of Series-active and shunt-active power filters. The main purpose of a UPQC is to compensate for voltage Imbalance...

This article presents an analysis and methodology for designing resonant inverters with energy dosing induction heating applications. These power topologies are characterized by the fact that consumption of DC source does not depend on magnitude changes load but is a function operating frequency, value capacitor supply voltage. Based description electromagnetic processes in circuit, analytical ...

Due to the disparity of power modules, asymmetry driving pulses and measurement errors sensors, dc currents may be injected grid-connected photovoltaic (PV) inverters. The current injection cause magnetic saturation transformers. To solve this issue, article thus proposes an effective control strategy compensation method, which does not require any extra sensor hardware circuit. First, root-cau...

Motivated by the recent and growing interest in smart grid technology, we study the operation of DC/AC inverters in an inductive microgrid. We show that a network of loads and DC/AC inverters equipped with power-frequency droop controllers can be cast as a Kuramoto model of phase-coupled oscillators. This novel description, together with results from the theory of coupled oscillators, allows us...

The multilevel inverters have highly desirable characteristics in high power high voltage applications. The multilevel inverter was started first with diode clamped multilevel inverter. Later, various configurations have been came into existence for many applications. However the multilevel inverters have some demerits such as requiring higher number of components, PWM control method is complex...