Results 251 to 260 of about 531,568 (306)

Zero-current-switching multilevel modular switched-capacitor dc-dc converter

2009 IEEE Energy Conversion Congress and Exposition, 2009
This paper presents a quasi-resonant technique for multilevel modular switched-capacitor circuit (MMSCC) to achieve zero-current-switching (ZCS) without increasing cost and sacrificing reliability. This zero-current-switching multilevel modular switched-capacitor circuit (ZCS-MMSCC) employs the stray inductance existing in the circuit as the resonant ...
Dong Cao, Fang Zheng Peng
openaire   +1 more source

Novel zero-current-switching PWM converters

IEEE Transactions on Industrial Electronics, 1997
This paper presents a new family of pulsewidth-modulated (PWM) converters, featuring soft commutation of the semiconductors at zero current (ZC) in the transistors and zero voltage (ZV) in the rectifiers. Besides operating at constant frequency and with reduced commutation losses, these new converters have output characteristics similar to the hard ...
Canesin, C. A., Barbi, I
openaire   +2 more sources

Zero-current-switching switched-capacitorconverters

IEE Proceedings - Electric Power Applications, 2001
The paper presents a family of zero-current-switching switched-capacitor circuits based on the classical multiswitch switched-capacitor converters. The family of circuits consists of three topologies and provides different voltage conversion ratios. All the power devices including switches and diodes in the circuit are zero-current switching.
openaire   +1 more source

Zero-voltage and zero-current soft-switching PWM inverter

2005 European Conference on Power Electronics and Applications, 2005
This paper presents a zero-voltage and zero-current soft-switching (ZVZCS) PWM three phase inverter with a single auxiliary resonant commutation cell. All of the main switches in the three-phase inverter side can be turned on and turned off under zero-voltage and zero-current condition. The operating principle of proposed commutation cell is described,
E. Hiraki, T. Tanaka, M. Nakaoka
openaire   +1 more source

Zero-current switching switched-capacitor quasiresonant step-down converter

IEE Proceedings - Electric Power Applications, 2002
Current stress is usually high for conventional switched-capacitor converter circuits, because of short-circuiting when charging up the capacitors. In this paper, two zero-current switching switched-capacitor resonant step-down converter families are presented which can improve the current stress problem. They are able to provide 1/2 to 1/n, and -1 to -
Y.P.B. Yeung, K.W.E. Cheng, D. Sutanto, S.L. Ho   +3 more
openaire   +1 more source

Zero-current-switching switched-capacitor bidirectional DC–DC converter

IEE Proceedings - Electric Power Applications, 2005
The proposed zero-current-switching switched-capacitor quasi-resonant DC-DC converter is a new type of bidirectional power flow control conversion scheme. It possesses the conventional features of resonant switched-capacitor converters: low weight, small volume, high efficiency, low EMI emission and current stress.
Y.-S. Lee, Y.-Y. Chiu
openaire   +1 more source

A family of zero-current-switching (ZCS) PWM converters using a new zero-current switching auxiliary circuit

The Fifth International Conference on Power Electronics and Drive Systems, 2003. PEDS 2003., 2004
A new family of zero-current-switching (ZCS) pulsewidth-modulated (PWM) converters which uses a new ZCS PWM switch cell is presented in this paper. The main switch and auxiliary switch operate at zero-current-switching turn on and turn off, and the all passive semiconductor devices in the ZCS-PWM converter operate at zero-voltage-switching (ZVS) turn ...
null Chien-Ming Wang, null Huang-Jen Chiu   +1 more
openaire   +1 more source

Three-phase sinusoidal current rectifier with zero-current switching

IEEE Transactions on Power Electronics, 1995
This paper presents the application of zero-current switching in a three-phase rectification scheme with nearly sinusoidal line currents. The principle of third harmonic current circulation is used to reduce the distortion in the line currents. Zero-current switching is accomplished with the use of only two switches.
M. Rastogi, N. Mohan, C.P. Henze
openaire   +1 more source

Zero-voltage switching in switched current circuits

Proceedings of IEEE International Symposium on Circuits and Systems - ISCAS '94, 2002
Traditionally the accuracy of switched-current circuits has been much lower than that of switched-capacitor circuits. To address this problem, an accurate high-speed switched-current sample-and-hold technique based on zero-voltage switching is presented.
openaire   +1 more source

A comparative study of switching losses of IGBTs under hard-switching, zero-voltage-switching and zero-current-switching

Proceedings of 1994 Power Electronics Specialist Conference - PESC'94, 2002
A high power IGBT tester, based on the typical clamped inductive load circuit and incorporating zero-voltage-transition and zero-current-transition soft-switching schemes, has been developed. Both turn-on losses, including the losses associated with reverse recovery of the clamp (free-wheeling) diode, and turn-off losses are measured and compared for ...
null Konrong Wang, F.C. Lee, null Guichao Hua, D. Borojevic   +3 more
openaire   +1 more source