نتایج جستجو برای: dc transformer

تعداد نتایج: 66297  

2000
Chandan Chakraborty

This paper shows a new direction as to how the transformer parameters may be best utilized and presents the performance and control of novel DC/DC and AC/DC converter topologies. All the three inductances of a transformer have been utilized to realize a CL topology having excellent characteristics and requiring no external inductor. For half bridge topology the capacitor used for the purpose of...

Journal: :IEEE Trans. Industrial Electronics 2002
Chandan Chakraborty Muneaki Ishida Yoichi Hori

This paper shows a new direction as to how the transformer parameters may be best utilized and presents the performance and control of novel dc/dc and ac/dc converter topologies. All three inductances of a transformer have been utilized to realize a 3 topology having excellent characteristics and requiring no external inductor. For half-bridge topology, the capacitor used for the purpose of inp...

2012
Hari Babu Kotte Radhika Ambatipudi Kent Bertilsson

The experimental and theoretical results of a ZVS (Zero Voltage Switching) isolated flyback DC-DC converter using multilayered coreless PCB step down 2:1 transformer are presented. The performance characteristics of the transformer are shown which are useful for the parameters extraction. The measured energy efficiency of the transformer is found to be more than 94% with the sinusoidal input vo...

2014
S. Kanimozhi V. Rajini

This paper presents implementations of a nonisolated, high voltage gain DC-DC converter. High voltage gain is achieved due to inclusion of resonance and transformer in the circuit. The performance of this converter is compared with two similar topologies namely coupled inductor-switched capacitor step-up converter and coupled inductor step-up converter. The proposed prototype is designed using ...

2017
Wenping Cao Jiangfeng Zhang

High power and high voltage gain DC-DC converters are key to high-voltage DC (HVDC) power transmission for offshore wind power. This paper presents an isolated ultra-high step-up DC-DC converter in matrix transformer configuration. A flyback-forward converter is adopted as the power cell and the secondary side matrix connection is introduced to increase the power level and to improve fault tole...

2015
Wenping Cao Jiangfeng Zhang Stephen J. Finney

High power and high voltage gain DC-DC converters are key to high-voltage DC (HVDC) power transmission for offshore wind power. This paper presents an isolated ultra-high step-up DC-DC converter in matrix transformer configuration. A flyback-forward converter is adopted as the power cell and the secondary side matrix connection is introduced to increase the power level and to improve fault tole...

Journal: :IEICE Electronic Express 2016
Ajmal Farooq Zhaohui Sun Guozhu Chen

Abstract: In this paper a new topology of high step-down dc-dc converter is proposed. The proposed converter uses an interleaved structure with one phase using a traditional buck converter and the second phase uses its inverted version. By this technique a high step down voltage conversion can be achieved as compared to the traditional interleaved buck converter. Operating principle and steady ...

2003
Volkan Kursun Siva G. Narendra Vivek De Eby G. Friedman

— The design of an efficient monolithic buck converter is presented in this paper. A low swing MOSFET gate drive technique is proposed that improves the efficiency characteristics of a DC-DC converter. A model of the parasitic impedances of a buck converter is developed. With this model, a design space is described which characterizes the integration of both active and passive devices of a buck...

2013
Yan Li Yanchao gao Longnv Li Di Zhang Fangxu Han

DC bias current flowing into the neutral point of power transformer will seriously affect the normal operation of AC power system. In this paper, exciting current, harmonic component of the excitation current, magnetic flux density and noise of transformer were analyzed when the transformer is in the no-load operation state based on field-circuit coupled method. Through the calculation and anal...

2004
John I. Rodriguez Steven B. Leeb

This paper reviews a computer-aided analytical technique for predicting the power transfer capability of an AC inverter energizing a separable inductive coupling. The capability curve is obtained using a switching model of the output rectifier and a readily available software package such as MATLABB. The capability curve is useful, among other applications, for evaluating candidate separable tr...

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