Results 271 to 280 of about 2,473 (319)

A method for generating secondary-referenced control power (power convertors)

[Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition, 2003
A method is described that uses a startup oscillator and the principal power components to generate a secondary-referenced voltage for the control circuit of an isolated power converter. The method eliminates the need for a separate housekeeping power supply in these converters.
M.M. Walters, W.K. Knudsen, W.A. Peterson   +2 more
openaire   +1 more source

New current regulation principle [for power convertors]

IEMDC 2001. IEEE International Electric Machines and Drives Conference (Cat. No.01EX485), 2002
In this paper, two novel methods for current regulation are presented. They both are based on the synchronized on-off principle, where an additional algorithm for null voltage vector is implemented, depending on the predicted current error at the end of the sampling interval. The methods are intended for use on modern DSP controllers.
V. Ambrozic, D. Nedeljkovic, R. Fiser
openaire   +1 more source

Studying reliability: Cryocoolers and power convertors

AIP Conference Proceedings, 2002
The dynamic machines discussed in this paper are cryocooler and power convertors using various thermodynamic cycles and moving parts. Analyzing dynamic machine reliability has been difficult from the beginning. Classic reliability analyses rely on statistical sampling and comparing failure modes to other similar systems where statistical results are ...
openaire   +1 more source

Power transistor convertor with new, fast response regulator

IFAC Proceedings Volumes, 1974
Summary The paper describes the theory, design and practical performance of a power transistor converter with an output of o V to ±240 V and up to ±10 A, that is, up to 2.4 kW dc. The transistors are bridge connected and employ pulse-width modulation (PWM) with carrier frequency cancellation.
T.M. Undeland, S.B. Jensen
openaire   +1 more source

SiC Schottky Diode for Use in Power Convertors

2006 International Biennial Baltic Electronics Conference, 2006
The specification characteristics of power electronic applications can be improved by use of the recent high-speed power devices. The Schottky structure has been developed for direct type converter circuits. The description of real layout and testing methodology of an experimental sample of 4H-SiC Schottky barrier diode manufactured by diffusion ...
M. Pikkov, T. Rang, A. Pokatilov
openaire   +1 more source

Generalised convertor models for iterative harmonic analysis in power systems

IEE Proceedings - Generation, Transmission and Distribution, 1994
There is an increasing interest in steady-state analysis of electric power systems with convertors. Harmonic analysis can be performed in the frequency domain with iterative methods that are comprehensive and efficient but may present convergence problems; this drawback can be overcome by employing appropriate models of convertors.
G. Carpinelli, F. Gagliardi, RUSSO, Mario, D. Villacci   +3 more
openaire   +3 more sources

Passive low-power single-phase—3-phase convertor

Proceedings of the Institution of Electrical Engineers, 1970
The paper describes a passive network for producing a balanced 3-phase output from a single-phase source. The novelty of the method centres on the observation that a single-phase supply can be regarded as a particular case of an unbalanced 3-phase system, and employs phase-balancing concepts which are derived from symmetrical component-measuring ...
D.T. Porteous, R.L. Russell
openaire   +1 more source

Cooling system of Haenam-Jeju HVDC system [power convertor]

ISIE 2001. 2001 IEEE International Symposium on Industrial Electronics Proceedings (Cat. No.01TH8570), 2002
This paper deals with the water cooling system of the Haenam-Jeju HVDC link power convertor in Korea. It is generally accepted that water is a very effective medium to remove heat from any type of equipment. Because of this, the benefits the water cooling method are used in HVDC applications.
null Joo-Sik Kwak, null Chan-Ki Kim, null Bong-Eon Koh   +2 more
openaire   +1 more source

Comprehensive Evaluation on Power Quality of Tidal Current Convertors

Marine Technology Society Journal, 2019
AbstractWith the continuous development of testing and evaluation of tidal current convertors, power quality assessment is becoming more and more critical. According to the characteristics of Chinese tidal current power generation and power quality standards, this paper proposes a comprehensive evaluation method of power quality based on K-means ...
Caixia Xue, Xiang-nan Wang, Ning Jia, Yuan-fei Zhang, Hai-nan Xia   +4 more
openaire   +1 more source

Methods of increasing the power rating of vibratory convertors

Journal of the Institution of Electrical Engineers, 1951
The paper discusses some of the difficulties encountered when extending the load capacity of vibratory convertors, and, in particular, those which are imposed by contact deterioration due to arcing. Two methods are described by which these difficulties may be overcome, both making use of special circuits designed to reduce the current carried by the ...
K.H. Dixey, C.V. Wilman
openaire   +1 more source