System and Method for Reducing Radiated Emissions in an Integrated Motor Drive
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United States of America Patent
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Issued Date -
Oct 30, 2014
app pub date -
Apr 25, 2013
filing date -
Apr 25, 2013
priority date (Note) -
Abandoned
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Abstract
A motor drive, configured to be mounted to a motor, includes improvements to input circuits configured to receive and/or transfer power within the motor drive to reduce emissions over prior art motor drives. According to a first embodiment of the invention, the motor drive includes a voltage balancing circuit which utilizes surface mount capacitors having a voltage rating of at least 2772 VDC and, preferably, of at least 5000 VDC. According to another embodiment of the invention, the power supply includes a planar transformer wherein the primary and the secondary coils are uniformly formed by traces on the circuit board.
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