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DC-to-DC converter

About: DC-to-DC converter is a(n) research topic. Over the lifetime, 1463 publication(s) have been published within this topic receiving 21218 citation(s).

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Papers
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Journal ArticleDOI: 10.1109/28.175280
07 Oct 1990-
Abstract: The performance of a high-power, high-power-density DC-to-DC converter based on the single-phase dual active bridge (DAB) topology is described. The dual active bridge converter has been shown to have very attractive features in terms of low device and component stresses, small filter components, low switching losses, high power density and high efficiency, bidirectional power flow, buck-boost operation, and low sensitivity to system parasitics. For high output voltages, on the order of kilovolts, a cascaded output structure is considered. The effects of snubber capacitance and magnetizing inductance on the soft switching region of control are discussed. Various control schemes are outlined. Coaxial transformer design techniques have been utilized to carefully control leakage inductance. The layout and experimental performance of a prototype 50 kW 50 kHz unit operating with an input voltage of 200 V DC and an output voltage of 1600 V DC are presented. >

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Topics: Forward converter (67%), DC-to-DC converter (62%), Leakage inductance (58%) ...read more

1,081 Citations


Proceedings ArticleDOI: 10.1109/IAS.2005.1518368
24 Oct 2005-
Abstract: The working principles and design equations of four different isolated, bi-directional DC to DC converter topologies (a dual active bridge converter, a series resonant converter and two multiple stage topologies) for a 2 kW bi-directional battery charger that can be operated in a wide input and output voltage range are presented in this paper. The results of a detailed mathematical analysis of the converter topologies as well as digital simulation results are used to select the most efficient topology for this specific converter application, where the two-stage series resonant converter is identified to be the most promising, with up to 90% efficiency at rated power.

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Topics: Forward converter (74%), Ćuk converter (72%), Boost converter (71%) ...read more

230 Citations


Proceedings ArticleDOI: 10.1109/PET.1998.731056
22 Oct 1998-
Abstract: This paper first describes the need of a bi-directional DC to DC converter for a fuel cell system. Various combinations of current-fed and voltage-fed converters are explored for the application of different voltage levels. With a preliminary study, putting current-fed on low-voltage side and voltage fed on high voltage side indicated higher efficiency than the other way around. Two low-side circuit topologies were then selected for hardware implementation. One is the L-type half-bridge current-fed converter, and the other is full-bridge current-fed converter. The high-side circuit topology is fixed with a full-bridge voltage-fed converter. Two systems were built and tested to full power. The results indicate that the combination with the full-bridge converter on the low-voltage side is more efficient than the combination with the L-type half-bridge converter on the low-voltage side for both charging and discharging modes.

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Topics: Forward converter (74%), Ćuk converter (73%), Flyback converter (70%) ...read more

216 Citations


Patent
12 Feb 1997-
Abstract: A DC to DC converter which maintains high efficiency over broad current ranges in a current mode switching regulator circuit without changing operational mode. A low ripple voltage is maintained over the entire load range and good voltage regulation is maintained with high efficiency. This is possible because the switching frequency is adjusted in accordance with the load without changing operational states, thus making it unnecessary to define plural states of operation. The timing of turning on the switch(es) varies since the switch(es) is (are) turned on when two set (ready) signals both become ready. For fixed frequency switching applications, switching pulses from a fixed frequency oscillator as a first set signal are skipped when a second set signal is not ready. On the other hand, for a variable frequency switching scheme which is implemented by driving the switching with a one-shot having a constant OFF time, the switching pulse is created after both set signals become active. A low pass filter is also used to dynamically adjust the minimum peak inductor current and to minimize ripple voltage for low load conditions so that a smaller output capacitor may be used.

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Topics: Voltage regulation (57%), Switched-mode power supply (56%), DC-to-DC converter (55%) ...read more

208 Citations


Patent
30 Nov 2001-
Abstract: A transformer has a primary winding connected between a pair of dc input terminals via an on-off switch, and a secondary winding connected between a pair of dc output terminals via a rectifying and smoothing circuit The output voltage applied from the rectifying and smoothing circuit to the load is held constant by switching the input voltage through feedback control The switch is driven in either of two different prescribed modes depending upon whether the converter is under normal or light load In order to ascertain the load magnitude a flyback period determination circuit is connected to a tertiary winding of the transformer for providing a signal indicative of a flyback period during which a flyback voltage exists across the transformer tertiary after the switch is turned off each time Each flyback period is compared with two different reference periods of time for hysteretic determination of whether the converter is under normal or light load Several other embodiments are disclosed

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Topics: Flyback transformer (65%), DC-to-DC converter (59%), Transformer (51%)

196 Citations


Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20222
202123
202070
201966
201860
201755

Top Attributes

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Topic's top 5 most impactful authors

Koosuke Harada

13 papers, 76 citations

Masahito Shoyama

5 papers, 18 citations

Laszlo Lipcsei

5 papers, 114 citations

Lifeng Luo

5 papers, 111 citations

Felix A. Himmelstoss

4 papers, 30 citations

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