Results 261 to 270 of about 58,304 (309)

Capacitor Voltage Ripple Minimization in Voltage Source Converter for HVDC Applications

2019 AEIT HVDC International Conference (AEIT HVDC), 2019
In this paper an exhaustive study on the effects of the circulating currents in the modular multilevel converter in HVDC applications is presented. In the first part, an analytical study of the converter is reported, with emphasis on the capacitors voltage ripple in presence of different circulating currents.
Marchesoni M., Passalacqua M., Vaccaro L., Carpita M., Gavin S., Kissling S.   +5 more
openaire   +1 more source

Ripple voltage and its elimination in low voltage power supply

2012 International Conference on Computer and Communication Engineering (ICCCE), 2012
This paper shows the simulation results of the effects of phase difference on the output ripple voltage of a low voltage power supply circuit. The circuit uses a rectifier circuit which adds the squares of two out-of-phase sine waves. The circuit focuses on the constraint of rectifying a low voltage input AC source while analyzing the ripple voltage in
A. Lutfi Torla, Sheroz Khan, Asan G.A. Muthalif   +2 more
openaire   +1 more source

A Low Ripple Current Mode Voltage Doubler

2015 IEEE 18th International Symposium on Design and Diagnostics of Electronic Circuits & Systems, 2015
Experimental results of a fully integrated low ripple charge pump voltage converter are presented. The pump is a current mode voltage doubler with a novel parasitic capacitance precharge mechanism for output voltage ripple reduction. A prototype of the pump was designed and fabricated in 130 nm CMOS process.
Andrzej Grodzicki, Witold Pleskacz
openaire   +1 more source

Analysis of the DC-Link Voltage Ripple for the Three Phase Voltage Ripple Under Low Order Harmonic Output Current

2020 4th International Conference on HVDC (HVDC), 2020
This paper presents a general analytical method of the dc-link voltage ripple to facilitate the dc-link capacitor design for the three phase voltage source converters (VSCs) under harmonic ac currents. The expressions of the dc-link low order harmonic (LOH) voltages and switching harmonic voltages (SRVs) are derived, respectively.
Lei Yang, Tao Wang, Shan Li, Kuan Fu Liang   +3 more
openaire   +1 more source

Photovoltaic inverter with power decoupling ripple-port for DC voltage ripple minimization

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC), 2017
A single-phase photovoltaic inverter presents a double line frequency voltage ripple which means it needs a bulky capacitor for reducing this issue, however, it causes power density decreases. The approach of this paper is to obtain high conversion efficiency, using film capacitors instead of the electrolytic capacitors in order to minimize double-line-
L. O. A. Valle, S. E. J. J. Rodríguez, N. J. J Martinez, R. J. Pérez, J. J. A. Beristáin   +4 more
openaire   +1 more source

Centralized ripple control on high-voltage networks

Journal of the Institution of Electrical Engineers - Part II: Power Engineering, 1948
Appreciable developments in the design and application of ripple-control equipments have taken place during the past ten years. The paper reviews the progress made and indicates the modern requirements of such systems in view of their proved value to the supply authority and their anticipated widespread use.
T.W. Ross, R.M.A. Smith
openaire   +1 more source

Effective value of direct-voltage ripple

Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, 1961
Rectifiers produce a ripple of the direct-voltage output. Because it has many different shapes, it is hard to describe in simple terms except by the effective (root-mean-square) value of the ripple voltage, giving only one number to designate its magnitude.
openaire   +1 more source

Low-Ripple Compact High-Voltage DC Power Supply

IEEE Transactions on Industry Applications, 2006
High-voltage dc (HV dc) power supplies using voltage multiplier circuits can easily be built and used for many practical applications. The novel design proposed in this paper uses two separate cascaded Greinacher circuits connected in phase opposition to improve the dc output quality.
F. Hwang, Y. Shen, S.H. Jayaram
openaire   +1 more source

Phase shift control of zero-voltage-ripple rectifier

Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257), 2002
As miniaturization of electronic device and complication of communication system progressed, downsizing and high efficiency are desired on power circuits. A zero-voltage-ripple rectifier can miniaturize the LC low-pass-filter, because its circuit structure negates AC components of switch current which causes output voltage-ripple.
T. Uchiyama, K. Shibata, T. Suetsugu
openaire   +1 more source

Monitoring ripple voltage in Darajat geothermal power plant

The 2nd IEEE Conference on Power Engineering and Renewable Energy (ICPERE) 2014, 2014
oscilloscope is used to measure the voltage ripple in PLTP Darajat, but experienced problems because the oscilloscope can not measurred simultaneously as many as 40 points measuring. In this paper, we will show the results of the design and implementation of the PLC to measure the ripple voltage total of 40 measuring points simultaneously.
Yuda Bakti Zainal, Susanto Sambasri
openaire   +1 more source