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:
Aug. 19, 1997
Filed:
Mar. 22, 1996
Albert Andreas Esser, Niskayuna, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A filter for a pulse width modulating inverter comprises a first inductor coupled to a phase connection of the pulse width modulating inverter, a second inductor coupled between the first inductor at a first-second coupling junction and a load, and a series configuration comprising a resistor and a capacitor coupled in series. The series configuration has one end coupled to the first-second coupling junction. If desired, the first inductor can be coupled between a phase connection of the pulse width modulating inverter and directly to the load, and the series configuration can have one end coupled to the load. The series configuration can further include a third inductor. Furthermore, the series configuration can be replaced by a parallel configuration comprising a resistor and a capacitor coupled in parallel, and the parallel configuration can further include a third inductor coupled in series to the resistor and the capacitor coupled in parallel. A second end of the series configuration can be coupled to a neutral or, if the filter includes a fourth inductor coupled to a second phase connection and a fifth inductor coupled between the fourth inductor at a fourth-fifth coupling junction and the load, the second end can be coupled to the fourth-fifth coupling junction. The filter can be used in single phase or multi-phase applications.