Results 261 to 270 of about 136,626 (309)

Design of step dynamic voltage regulator for power quality enhancement

IEEE Transactions on Power Delivery, 2002
The design of step dynamic voltage regulator is considered for the purpose of restoring load voltage without incurring excessive phase angle shift. As a type of custom power device devoid of any significant energy-storage capability, the process of voltage restoration by the regulator has to depend on the power in-feed from an external supply system ...
J. W. Liu, S. S. Choi, S. Chen
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Step type feeder voltage regulators

Electrical Engineering, 1935
Discussion and author's closure of a paper by L H. Hill published in the February 1935 issue, pages 154–8, and presented for oral discussion at the distribution and transmission session of the South West District meeting, Oklahoma City, Okla., April 26, 1935. F. L. Snyder (Westinghouse Elec. and Mfg.
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Single-step voltage regulator Application

Electrical Engineering, 1951
THE DESIGN LIMITS of rural distribution circuits usually are determined by permissible voltage drop rather than the thermal limitations of the conductor. Presently overloaded circuits supplying power at inadequate voltage levels are the result of conservative estimates of load growth.
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Novel voltage control of multiple step voltage regulators in a distribution system

ISGT 2014, 2014
This paper presents a novel method for determining the control parameters and a voltage control method for multiple step voltage regulators (SVRs) in a single feeder. The main purpose of the proposed method is to reduce the amount of voltage violation and the tap operation times and to extend the voltage margin from the upper and lower voltage limits ...
Shinya Yoshizawa, Yuya Yamamoto, Jun Yoshinaga, Yasuhiro Hayashi, Shunsuke Sasaki, Takaya Shigetou, Hideo Nomura   +6 more
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Transformerless step up alternating voltage regulators with sinusoidal currents

International Conference and Seminar of Young Specialists on Micro/Nanotechnologies and Electron Devices, 2012
A new transformerless AC voltage regulators with a sinusoidal input and output currents and ability of voltage increasing are considered. The regulators can be used as the soft-starting devices for asynchronous motors. Results of mathematical modeling and analytical calculation of RMS values by fundamentals of the currents and voltage are given.
Aleksey V. Udovichenko, Gennady S. Zinoviev   +1 more
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Controls for Step Voltage Regulators [includes discussion]

Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1955
A unique control circuit for step voltage regulators is described. An auxiliary relay with four pairs of contacts has been eliminated; this results in reduced maintenance and quiet operation. Full integrating time delay is obtained by means of a motor-driven time-delay relay operated directly by the contacts of the voltage-regulating relay. Sparking on
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Multiphase voltage regulator module with transient step changing phases

PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409), 2002
The paper presents a new method to control multiphase DC-DC converters for supplying new generation microprocessors (VRM) requiring higher currents at lower voltages. These requirements are achieved by paralleling converter modules, and phase-shifting their drive signals (interleaving technique).
G. Capponi, L. Minneci, F. Librizzi, P. Scalia   +3 more
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Step-up AC Voltage Regulators with High-Frequency Link

IEEE Transactions on Power Electronics, 2013
A circuit configuration and a circuit topological family of step-up ac voltage regulators with high-frequency link are proposed. This kind of circuit topology is composed of input LC filter, energy-storage inductor, input cycloconverter, high-frequency transformer, output cycloconverter and output filtering capacitor.
Daolian Chen, Yanhui Chen
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An analysis and implementation of step-dynamic voltage regulator

2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309), 2003
This paper describes the design considerations and effectiveness of step-dynamic voltage regulator (S-DVR) as a solution to mitigate against voltage sags. A possible short-circuit problem encountered during S-DVR operation is identified and analyzed. Two solutions are proposed and they are validated through computer simulations.
S.S. Choi, J.W. Liu, S. Chen
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Fast Response Control of Stepping Inductance Voltage Regulator Module

IEEE 36th Conference on Power Electronics Specialists, 2005., 2006
Voltage regulator modules (VRM) have stringent efficiency and transient response requirements. A stepping inductance based VRM (SI_VRM) has been proposed by other researchers with the aim of achieving fast dynamic current response under step-load conditions.
X. Cao, R. Oruganti
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