Abstract This paper presents an input surge protection circuit for automotive electronics systems with adjustable overvoltage threshold suitable high voltage applications. Compared the conventional circuit, it boasts a new high-voltage bandgap reference design without pre-regulation, which takes up less space and can be used on limited PCB board, expanding practical application range of chip. T...

In this paper, a broadband circuit model of a potential transformer (PT) based on fractional calculus and circuit augmentation method is proposed to improve the high frequency characteristic while providing physical significance of existing traditional equivalent circuit model with simple structure. In order to reflect the characteristics of the hysteresis of the iron core roundly, a fractional...

We report the first use of cobalt aluminophosphate (CoAPO5) as a water oxidation catalyst. A decrease in the overvoltage by about 0.2 V with respect to catalyst free FTO has been observed. Additionally, we show that CoAPO5, deposited on ITO or Pt, can also act as a photo-electro-catalyst, as it generates enhanced oxidation currents in the presence of light starting from a bias of +0.8 V vs. Ag/...

We describe a coupled experimental-numerical study of the effect of proton irradiation on the inductive turn-off of fastrecovery p-i-n diodes for snubberless applications. The goal is to avoid the large overvoltages and spurious oscillations that may arise at switch-off and jeopardize the diode’s reliability. We evaluated different proton irradiation profiles in order to extract indications on ...

This paper presents the use of curtailment to allow more wind or solar power to be connected to a distribution network when overcurrent or overvoltage set a limit. Four case studies, all based on measurements, are presented. In all cases the hosting capacity method is used to quantify the gain in produced energy for increased levels of distributed renewable energy resources. A distinction is ma...

Ferroresonance is a phenomenon that involves high distorted levels of overvoltage and overcurrents. During the last decades, the three-phase ferroresonance research has suffered several changes due to the continuously changing equipment and network. This paper analyses every main factor that is somehow related with the origin, consequences and the preventive decisions that may lead us to avoid ...

During the past years, governments throughout the world have been encouraging the installation of renewable energy systems to cope with environmental goals. In this framework, there has been a significant increase in the number of energy producers on the consumers’side, majorly due to photovoltaic and wind energy microgeneration.This has brought some concerns in voltage control on buses far awa...

The paper considers the possibility of improving technical characteristics gas surge arresters for co-ordination insulation at low voltage, medium voltage and high levels. idea a arrester is based on application radioactive source 241Am in area cathode. Intensive ionization with alpha particles significantly increases number free electrons space between electrodes, which shortens time their tra...

The paper aims to analyze the parameters of prototypes new overvoltage protection devices for power grids—a multi-chamber insulator arrester (MCA) and a long flashover (LFA). article presents research results on determining actual MCA LFA impact characteristics. Moreover, were compared assess effectiveness devices. presented in this will supplement missing information about They make it possibl...