A compact nanosecond pulse generator was designed and tested. The generator has a specially designed unit consisting of an HCEIcap 1000.2 capacitor and a multigap switch. The total inductance of the unit is 20 nH. The modifications made in the design allowed an increase in energy density up to 370 J/l at an electric field strength of 200 kV/mm. The volume of the capacitor active part is 2.3 l. ...

This work focuses on the estimation of the Remaining Useful Life (RUL) of aluminum electrolytic capacitors used in electrical automotive drives under variable and nonstationary operative conditions. The main cause of the capacitor degradation is the vaporization of the electrolyte due to a chemical reaction. Capacitor degradation can be monitored by observing the capacitor Equivalent Series Res...

A low voltage switched-capacitor circuit that generates an almost constant reference current across process, voltage and temperature (PVT) is proposed. The reference voltage is generated by a low voltage band-gap circuit. The output reference current is obtained by applying the generated reference voltage to a low voltage V – I converter. The resistor in the proposed V – I converter is further ...

Individually Network reconfiguration or Capacitor control perform well in minimizing power loss and improving voltage profile of the distribution system. But for heavy reactive power loads network reconfiguration and for heavy active power loads capacitor placement can not effectively reduce power loss and enhance voltage profiles in the system. In this paper, an hybrid approach that combine ne...

Various basic, efficient and cheap techniques are used for the purpose of life forecast and failure detection of aluminum electrolytic capacitors which are utilized as a part of many power electronic converters. The main idea of these techniques is to calculate the values of Equivalent Series Resistance (ESR) and Capacitance (C). Observing the ESR values, valuation of changes in voltage and cur...

Point of common coupling (PCC) arrays are the most prominent and widely-used intermittent distributed generations (DGs). Due to right-of-way, environmental, economical other restrictions, connection these types DGs preferred point distribution network is very difficult or impossible in some cases. Therefore, because non-optimal locations, they may cause a voltage rise at PCC. In this paper, coo...

This paper presents a dual active bridge DC/DC converter used as an AC current compensator in hybrid energy storage application. The the DC link appears when three-phase, four-wire inverter operates with unbalanced output currents—for example, trying to compensate for grid voltage unbalance. has adverse effects on operation of electrochemical storage, and it should be compensated. To achieve th...

The need for electrical energy has become an inseparable part of people's daily lives in line with the increasing economy and development fields technology, industry, information, research, agriculture education. Electric motor machines containing coils wire (inductors) where inductive loads absorb reactive power magnetization needs, so source (power plant) must supply greater power. Of course,...

This paper describes an advantageous method for using the capacitor banks in the distribution network, optimally. The aim is to determine the count, location and capacitor values in order to minimize the annual cost resulting from energy losses and capacitor bank’s installation cost. Besides, in the case of having nonlinear loads in the network, by installing capacitors in appropriate locations...

VAR support should be supplied as close to the load as possible to minimize transmission losses. For voltage control and for improvement of total power factor in a distribution system the circuit- breaker switched capacitor banks can be used. The problems with this solution are the voltage steps caused by the large sizes of the capacitor banks as well as the transients caused on insertion. Thyr...