Patent ID: 9300241
Filing Date: 2016-03-29
CPC Classification: H02M,H02P,Y02B

Claim Text:
1. A drive circuit for electromagnetic interference (EMI) reduction provided by a power line to a motor controller, the power line comprising at least a first alternating current (AC) line output and a second AC line output, said drive circuit comprising: an EMI filter having at least a first EMI filter input terminal, a second EMI filter input terminal, a first EMI filter output terminal, and a second EMI filter output terminal, said first EMI filter input terminal configured to be coupled to the first AC line output and said second EMI filter input terminal configured to be coupled to the second AC line output; a rectifier portion comprising a first rectifier input terminal coupled to said first EMI filter output terminal and a second rectifier input terminal coupled to said second EMI filter output terminal; at least two series-coupled filter capacitors positioned after said rectifier portion; and a power factor correction (PFC) choke comprising a first end and a second end, said first end coupled to one of said first and second EMI filter output terminals and to one of said first and second rectifier input terminals, said second end coupled between said at least two series-coupled filter capacitors.