METHOD AND DEVICE FOR SAFE VOLTAGE CONNECTION OF A DRIVE INVERTER
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United States of America Patent
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app pub date -
Sep 15, 2015
filing date -
Mar 15, 2013
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Abstract
A device and a method connect and reliably separate a voltage terminal of a drive inverter for an electric machine to or from a supply voltage. The device contains a connection and interruption circuit with two switching branches connected between a supply voltage terminal of the supply voltage and the voltage terminal of the drive inverter. A control and/or regulating device is programmed and/or the circuitry of which is configured to connect the supply voltage to the voltage terminal of the drive inverter via the switching branches and to deactivate one of the switching branches in a first test mode and to read a sensor signal from the switching branch while the other switching branch is activated and conducts the supply voltage to the voltage terminal of the drive inverter.
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