High voltage, high power density bi-directional multi-level converters utilizing silicon and silicon carbide (SiC) switches

Reese, B.; Schupbach, Marcelo; Lostetter, Alexander B.; Rowden, Brian; Saunders, Robert M.; Balda, Juan Carlos

doi:10.1109/apec.2008.4522730

Cited by 16 publications

(10 citation statements)

References 3 publications

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“…For the highfrequency operation, the reduction of skin depth losses was addressed with 1050 strands of AWG 36 Litz wire for the windings. This provided for multiple windings in the primary and secondary and some level of flexibility in the transformer leakage inductance by changing the interleaving designation of the primary and secondary windings [3].…”

Section: B High-frequency Transformermentioning

confidence: 99%

“…1 primarily consisting of a three phase ac-dc converter (Converter #1), dc-ac converter (Converter #2) to generate a high-frequency ac for the high-frequency isolation transformer (HF-XFMR), and an ac-dc converter (Converter #3) to convert the high frequency ac to a dc bus [3]. For the purpose of this paper, the focus is on the areas in the inner box consisting of single phase converters #2 and #3, and the high-frequency transformer (as highlighted in Fig.…”

Section: Pcm Electrical Designmentioning

confidence: 99%

“…One aspect of the IPS is the PCM that provides voltage conversion from one form or level to another. The primary PCM of interest in this work relates to the PCM-4, an isolated PCM having three-phase voltages on one side (e.g., 4.16 kV) and a dc voltage on the other side (e.g., 1 kV) [3].…”

Section: Introductionmentioning

confidence: 99%

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Double sided spray cooled bi-directional power conversion module

Rowden

Trowler

Balda

2009

2009 IEEE Electric Ship Technologies Symposium

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In this work, a power conversion module (PCM) was packaged and integrated with a double-sided spray cooling system developed to demonstrate vertical thermal management system integration. The parallel design of the power electronics and thermal management system provide the capability for high power density. The spray cooling system designed provides capability for relatively large areas with heat fluxes above 50 W/cm 2 using a dielectric fluid like FC72™.

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Section: B High-frequency Transformermentioning

confidence: 99%

Section: Pcm Electrical Designmentioning

confidence: 99%

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Double sided spray cooled bi-directional power conversion module

Rowden

Trowler

Balda

2009

2009 IEEE Electric Ship Technologies Symposium

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“…Bi-directional power transfer is not only advantageous for applications that require it, but it can also add flexibility in connecting a source to either the voltage side or current side of the converter depending on which is more advantageous. Figure 1 illustrates a conventional dc-ac PEBB consisting of a bi-directional dc-dc converter and an inverter as in [1]. The PEBB in Figure 1 can be used by itself or as a module in a larger converter.…”

Section: Vd Vcsmentioning

confidence: 99%

“…Eliminating the capacitor C d is not only important due to the obvious reasons of fewer components, reduced cost, higher reliability, and smaller size, but it also enables the switches to operate at higher temperatures. In Figure 1 the switches of the inverter (and possibly dc-dc converter as in [1]) must be placed close to the capacitor C d . The proximity of the capacitor(s) will thus limit the maximum operating temperature of the switches.…”

Section: Vd Vcsmentioning

confidence: 99%

A direct isolated bi-directional converter as a power electronic building block (PEBB)

Begalke

2008

2008 IEEE Power Electronics Specialists Conference

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A converter is described in this paper for use as a power electronics building block (PEBB). This PEBB can be utilized by itself or as a module in a larger converter. The converter utilizes a transformer, which adds isolation to the converter along with increasing the possible ways of configuring the modules. The PEBB is also bi-directional, which enables the PEBB to be suitable for a wider range of sources. The proposed PEBB is a direct converter. The direct conversion eliminates a capacitive filter, and when utilized with soft switching, increases the frequency of the voltage and current waveforms applied to the converter's filters. These advantages result in fewer components, reduced cost, higher reliability, smaller size, and higher operating temperatures for switches. When the PEBB is utilized in the cascade configurations proposed herein, the direct conversion further increases the above advantages. The converter also utilizes a commutation method that short-circuits the transformer winding and results in soft switching under all load conditions, bi-directional power transfer capability, and substantially reduces the power rating of the clamping circuitry. These advantages are typically possible with no increase in conduction loss, VA ratings, or number of components when compared to a hard switching converter. Due to the advantages above, the proposed converter results in a PEBB with high performance, small size, low cost, and more possibilities for configuring the PEBBs.I.

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