Electric Vehicles (EVs) are continuing to grow their share of total vehicle sales as consumers, companies, and governments prioritize automotive electrification. Types EVs include hybrid electric, plug-in battery fuel cell vehicles. Today, commonly use an ac permanent magnet or induction motor. A traction inverter is a critical drivetrain element required convert the dc current available from p...

This paper discusses the basic considerations and development of a prototype demo system for the wireless charging of supercapacitor electric vehicles, which uses magnetic resonance coupling. Considering future ubiquitous wireless vehicle stationary and dynamic charging facilities, supercapacitor could be an ideal device to store a reasonable amount of electrical energy for a relatively short p...

Vienna rectifiers have gained popularity in recent years for AC to DC power conversion many industrial applications such as welding supplies, data centers, telecommunication sources, aircraft systems, and electric vehicle charging stations. The advantages of this converter are low total harmonic distortion (THD), high density, efficiency. Due the inherent current control loop voltage-oriented s...

Wind energy conversion systems are now occupying important space in the research of renewable energy sources with microgrid. The main challenge in wind power generation is power quality problem and their connection with the distribution network in microgrid. The main factor behind poor power quality is the impact of harmonics in current and voltage in power network. In microgrid the converter a...

This paper presents a high-efficiency inductorless self-controlled rectifier for piezoelectric energy harvesting. High efficiency is achieved by discharging the piezoelectric device (PD) capacitance each time the current produced by the PD changes polarity. This is achieved automatically without the use of delay lines, thereby making the proposed circuit compatible with any type of PD. In addit...

– This paper describes a completely digitally controlled low-harmonic rectifier. It is shown that the dynamics of the outer voltage loop can be significantly improved using a digital notch filter. Low input current harmonics and fast voltage response are experimentally verified using a 200W universal-input boost power supply operating at the switching frequency of 200KHz.

High power onboard battery chargers employed in electric vehicles (EVs) and plug-in hybrid EVs (PHEVs) fed from three-phase mains typically consist of a two-stage structure as AC-DC DC-DC stages. The stage is also known the active front end (AFE). While AFE rectifies voltage, maintains factor, provides constant DC-link voltage to converter, converter regulates charging current considering algor...

This paper investigates the dynamic behavior of Gas Metal Arc Welding (GMAW) process for two types of power supplies –inverter and rectifier- for short circuit transfer mode. The large ripples on the rectifier power source are able to perturb the metal transfer mode. In this experimental work some operating points in the short circuit mode have been selected using an automatic pipeline welding ...

The non-linear loads include rectifiers, blenders, electric drills, UPS, computer, printer, TV’s, variable speed drivers, arc furnaces and high power electronic equipment comprising high power semiconductors i.e thyristorised Converters, Inverters etc. It is well known that any deviation from a perfect sin-wave is an indication of the presence of harmonics in the power system. Hence, a pure alt...