The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9473045 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 18, 2016

Filed:

Apr. 21, 2015
Applicant:

National Taiwan University of Science and Technology, Taipei, TW;

Inventor:

Ching-Shan Leu, Taipei, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/44 (2007.01); H02M 7/539 (2006.01); H02M 7/217 (2006.01); H02M 7/48 (2007.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 7/539 (2013.01); H02M 1/44 (2013.01); H02M 7/217 (2013.01); H02M 7/48 (2013.01); H02M 2001/0058 (2013.01); Y02B 70/1441 (2013.01); Y02B 70/1491 (2013.01);
Abstract

A soft-switching and low input current ripple power inversion circuit, in which the inversion circuit is connected in parallel to an input DC voltage source and includes a top cell, a bottom cell and at least one transformer, in which the top cell and the bottom cell have its individual impedance adjusting unit of which the impedance can easily be adjusted to obtain the required equivalent resonant inductance or capacitance. Thus, the semiconducting switches therein can be soft-switched alternately to reduce the switching loss. Moreover, the inversion circuit can be modified by adding at least one middle cell inserted between the top cell and the bottom cell to reduce the voltage stress on the semiconductor switch. Consequently, low voltage rating semiconductor switch accompanied with lower RDS(on), conduction losses can be reduced to improve the converter efficiency.


Find Patent Forward Citations

Leu, Ching-Shan. (2016). Soft-switching low input/output current-ripple power inversion and rectification circuits (U.S. Patent No. 9473045). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9473045

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