Results 301 to 310 of about 1,109,733 (356)

Voltage Dip Mitigation Using Shunt-Connected Voltage Source Converter

IEEE Transactions on Power Electronics, 2006
In this paper, a Voltage Source Converter (VSC) connected in shunt with the grid to mitigate voltage dips for sensitive processes is presented. The VSC maintains the magnitude of the grid voltage at the connection point constant by injecting reactive power to compensate for the voltage dip. This is achieved by using a cascade controller, constituted by
Massimo Bongiomo, Jan Svensson
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Source-follower voltage gain

International Journal of Electronics, 1971
Abstract It is shown that, when biased for minimum source-gate voltage temperature variation, a source-follower using an enhancement mode MOSFET (Metal Oxide Silicon Field Effect Transistor) and a resistive load has a small signal low frequency voltage gain, Av , which may be significantly less than unity. Typically, Av 0·98 can be realized.
B. L. HART, R. W. J. BARKER
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VOLTAGE SOURCE CONNECTED SYNCHRONOUS MACHINES

2007
The synchronous machine has traditionally been used for power generation purposes. For motor applications (when connected to the power grid), a synchronous machine is ideal when the operating speed must remain constant, i.e., independent of load changes. Starting up, however, needs special measures.
André Veltman, Duco W. J. Pulle, R. W. De Doncker   +2 more
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Economical wide-band voltage-controlled voltage source

International Journal of Electronics, 1980
An economical non-inverting voltage-controlled voltage source (VCVS) which employs only two operational amplifiers and two resistors is given. The proposed amplifier has a larger bandwidth than that obtained using the uncompensated the Reddy (1976) and the Geiger (1977) VCVS structures.
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Phase-compensated voltage-controlled voltage source networks

International Journal of Electronics, 1981
An analysis is presented of a class of second-order filters where the active device is a phase-compensated voltage-controlled voltage source (PCVCVS). It is shown that the shift which occurs in the natural period, due to finite gain-bandwidth offsets, is critically dependent on the proper adjustment of the PCVCVS variables.
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Voltage control of current source inverters

IEEE Transactions on Energy Conversion, 2006
The current source inverters may become direct competitors of the voltage source inverters thanks to the voltage control techniques. The paper proposes an improved voltage control technique for current source inverters, that chooses the current vectors relying on bang-bang controllers.
MARIGNETTI, Fabrizio, DELLI COLLI V, CANCELLIERE P, DI STEFANO, Roberto   +3 more
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Voltage Source Converter Control Under Unbalanced Grid Voltage

2021
The conventional control of the voltage source converter (VSC) assumes that the input voltage is balanced. However, unbalanced voltage is a phenomenon that occurs frequently in actual industrial sites. If the grid voltage is unbalanced, THD increases due to voltage negative component, and low harmonic components appear in DC-link voltage, which ...
Ahmed G. Abo-Khalil, Ali M. Eltamaly
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Efficiency Comparison of Voltage-Source and Current-Source Drive Systems for Medium-Voltage Applications

IEEE Transactions on Industrial Electronics, 2005
This paper calculates and compares the efficiency and loss distribution in three most popular state-of-the-art types of medium voltage drive systems; current source drive with active front-end rectifier, current source drive with 18-pulse thyristor rectifier, and three-level voltage source drive with 12-pulse/24-pulse diode rectifier.
null Yongsug Suh, J. Steinke, P. Steimer
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A hybrid, current-source/voltage-source power inverter circuit

IEEE Transactions on Power Electronics, 2001
A combination of a large current-source inverter and a small voltage-source inverter circuits is analyzed. The resultant hybrid inverter inherits certain operating advantages from both the constituent converters. In comparison with the popular voltage-source inverter, these advantages include reduced switching losses, improved quality of output current
Trzynadlowski, Andrzej M., Patriciu, Niculina, Blaabjerg, Frede, Pedersen, John Kim   +3 more
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Stable voltage reference sources

IEEE Journal of Solid-State Circuits, 1972
A family of well-regulated voltage references are shown, which are readily integrable for use with emitter-coupled logic, threshold logic, or linear circuit arrays. By relying on the relatively well-matched characteristics and the temperature tracking of integrated transistors and resistor ratios, the circuit can provide a large range of output ...
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