This paper proposes an impact analysis on voltage unbalance of Plug-in Electric Vehicle (PEV) home charging in Thailand distribution system. The voltage unbalance is calculated with the voltage unbalance factor (%VUF) according to IEC 61000-2-4: 2000-06 standards and impact assessment with the new criteria of Provincial Electricity Authority (PEA) standards. The study uses distribution network ...

The aim of this paper is to evaluate the benefits that can be achieved by operating the connection inverters of the distributed energy resources as active power filters in LV distribution networks. The use of the future fuel cell inverters to compensate zero sequence currents, arising from unbalances among phases, can improve the efficiency of the distribution networks by means of reducing the ...

This paper discusses a distributed generation system consisting of grid-connected solar PV and battery-integrated Unified Power Quality Conditioner (UPQC). Embedded in the array, UPQC consists series shunt converter connected back through common DC link. In this system, power quality problems clean energy, such as harmonics, voltage drops, ripples, are compensated by injecting active energy int...

A dynamic voltage restorer (DVR) is developed to stabilize the three-phase load under sudden grid distortion conditions, including sag, swell and unbalance. The DVR composed of a DC\AC inverter DC-link capacitor regarded as energy storage element. When occurs, instant power compensate or absorb realized by resulted in degenerate stabilization performance poor transient quality load. Hence, cont...

This paper presents a grid interfacing inverter that compensates power quality problems and it can also interface renewable energy sources with the electric grid. The grid interfacing inverter can effectively be utilized to perform following functions: 1) transfer of active power harvested from the renewable resources; 2) load reactive power demand support; 3) current harmonic compensation at P...

Dynamic current and transition energy unbalance resulting from parameter mismatch between parallel MOSFET branches are mapped over wide operating ranges. Unbalance generator magnitudes are given for HEXFET Power MOSFET data sheet ant typical production batch extremes. Limit functions are defined for unbalance due to ON resistance, gain and threshold voltage mismatch. Q loci are utilized for map...

Three phase induction motors are widely used in industrial, commercial and residential systems, because of their ruggedness, simplicity and relatively low cost. Approximately 65% of the electricity consumed in industry is used to drive electrical motors. Therefore, the efficiency and reliability of induction motors operation is of major importance, in order to improve the energy efficiency in i...