PROTECTED POWER CONVERSION DEVICE AND CONTROL METHOD
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United States of America Patent
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Issued Date -
Jan 10, 2013
app pub date -
Jan 14, 2011
filing date -
Jan 15, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A protected power conversion device (1) includes a full-bridge MERS (100), a control circuit (200), and an ammeter (300), and is connected between a DC current source (2) and an inductive load (3). The ammeter (300) measures a current value supplied to the inductive load (3). The control circuit (200) changes the states of four reverse-conductive semiconductor switches (SW1) to (SW4) configuring the full-bridge MERS (100) to convert power output by the DC current source (2) into AC power, and supplies the AC power to the inductive load (3). When, for example, the inductive load (3) is short-circuited and malfunctions, a large current flows therethrough, and the current value detected by the ammeter (300) becomes equal to or greater than a predetermined value, the control circuit (200) turns OFF all reverse-conductive semiconductor switches (SW1) to (SW4) to cut OFF the large current.
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