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.:
Date of Patent:
Sep. 29, 2009
Filed:
Jul. 31, 2006
Nicolai B. Mortensen, Madison, WI (US);
Venkata Giri Venkataramanan, Madison, WI (US);
Nicolai B. Mortensen, Madison, WI (US);
Venkata Giri Venkataramanan, Madison, WI (US);
Wisconsin Alumni Research Foundation, Madison, WI (US);
Abstract
An apparatus and method for reducing EMI generated by a power conversion device, as well as a power conversion device employing such apparatus or method (and/or devices employing such a power conversion device) are disclosed. In at least some embodiments, the apparatus includes a hybrid filter for use in reducing EMI. The hybrid filter includes a passive filtering component, and an active filtering component coupled at least indirectly to the passive filtering component. The active filtering component includes a voltage controlled voltage source, and the hybrid filter operates to reduce a level of a common mode current, whereby the EMI generated due to the common mode current is reduced.