Results 241 to 250 of about 1,023,143 (295)
A Control Method for Voltage Balancing in Modular Multilevel Converters
IEEE Transactions on Power Electronics, 2014 The modular multilevel converter (MMC) is attractive for medium- or high-power applications because of the advantages of its high modularity, availability, and high power quality.
Zhe Chen, Fujin Deng
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Voltage balance for replacing the kilogram
IEEE Transactions on Instrumentation and Measurement, 1995The paper gives a short description of the basic principle of work of the ETF Voltage Balances, as well as the measurement procedures enabling the absolute determination of the Volt. We review previous results, and estimate the expected uncertainties for further experiments using the so-called charge-method.
V. Bego, J. Butorac, K. Poljancic
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A New Nine-Level Voltage Source Inverter with Capacitor Voltage Balancing
IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018In this paper, a new nine-level voltage source inverter for medium-voltage high-power applications is proposed. The proposed topology is a combination of the active nested neutral-point clamped inverter and the flying capacitor inverter. A carrier-based sinusoidal pulse width modulation scheme is developed to balance the voltage of the flying ...
Rasul Tarvirdilu-Asl, Mehdi Narimani
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MMC Capacitor Voltage Decoupling and Balancing Controls
IEEE Transactions on Power Delivery, 2015A Modular Multilevel Converter (MMC) control system based on converter energy storage is proposed in this paper for two different control modes: active power and dc voltage. The proposed control system decouples the sub-module (SM) capacitor voltages from the dc bus voltage. One of the practical applications is the management of active redundant SMs. A
Hani Saad +4 more
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Voltage-Balancing Method for IGBTs Connected in Series
IEEE Transactions on Industry Applications, 2003This paper presents a new method for balancing voltages of series-connected insulated gate bipolar transistors (IGBTs). This method can be implemented only by adding simple circuits to the gate drive system of the IGBTs, and its effect of balancing the IGBT's collector-emitter voltages during the switching transients is remarkable.
K. Sasagawa, Y. Abe, K. Matsuse
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BRAVO: Balanced Reliability-Aware Voltage Optimization
2017 IEEE International Symposium on High Performance Computer Architecture (HPCA), 2017Defining a processor micro-architecture for a targeted productspace involves multi-dimensional optimization across performance, power and reliability axes. A key decision in sucha definition process is the circuit-and technology-driven parameterof the nominal (voltage, frequency) operating point.
Karthik Swaminathan +5 more
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Dual-Buck Half-Bridge Voltage Balancer
IEEE Transactions on Industrial Electronics, 2013Micro-dc grid is a novel power system focused on the development of renewable resources. However, two-wire transmitting power mode is generally accepted in a micro-dc grid, which is usually not suitable for the requirements of the input voltage levels of different power converters and loads.
Xianjin Zhang, Chunying Gong
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Series connection of IGBT's with active voltage balancing
IEEE Transactions on Industry Applications, 1999This paper describes a gate drive circuit for series-connected IGBTs in high voltage applications. The control criterion of the gate drive circuit is to actively limit the voltages during switching transients, while minimizing the switching transient and losses. In order to achieve the control criterion, a closed loop control scheme is adopted.
V. Chitta +2 more
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Balancing high-voltage batteries
Power Engineering Journal, 1991How often do we hear, at the site of a natural disaster such as a storm or flood1, ‘if only I'd made sure my insurance policy was up to date! ’ It is always easy to be wise after the event, and all too easy to be misled into believing that cover is adequate to cope with any emergency. So it is with standby battery systems.
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A UPFC-based voltage compensator with current and voltage balancing function
Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005., 2005In this paper, a control strategy for a three-phase UPFC-based voltage compensator with the function of current and voltage balancing is proposed. Line voltage variations and line current and voltage unbalance are compensated simultaneously by the proposed compensator.
Y. Ikeda, T. Kataoka
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