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:
Apr. 11, 2017
Filed:
Dec. 08, 2015
Johnson Controls Technology Company, Holland, MI (US);
Ajit W. Kane, York, PA (US);
Johnson Controls Technology Company, Holland, MI (US);
Abstract
The variable speed drive system is arranged to receive input power at fixed input voltage magnitude and frequency and provide power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC source to convert the input voltage to a boosted DC voltage. A DC link connected to the converter filters the DC voltage from the converter stage. An inverter converts the DC link voltage into variable voltage and the variable frequency AC power. An electromagnetic compatibility (EMC) filter includes a series RC circuit from phase-to-ground circuit for each input phase of the converter. The RC circuit includes a resistor connected in series with a capacitor between the converter phase and ground. The EMC filter is connected to the line side of the converter. An inductor is connected between the input source and the EMC filter.