Control arrangement and method for regulating the output current of a dc source power converter connected to a multi-source dc system
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United States of America Patent
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Nov 21, 2017
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Feb 29, 2012
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Mar 2, 2011
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Abstract
A converter control arrangement (18) for regulating the output current of a dc source power converter (16) comprises a current regulator (20) for regulating the output current based on a comparison of an output current value (Iout) of the dc source power converter (16) with a desired target current value (Itgt). When the output voltage value (Vout) of the dc source power converter (16) is within a normal operating voltage range between minimum and maximum voltage values (Vmin, Vmax) defined with respect to a voltage reference value (Vref) of the dc source power converter (16), the converter control arrangement (18) controls the target current value (Itgt) so that it is equal to a desired reference current value (Iref). When the output voltage value (Vout) is outside the normal operating voltage range, which typically indicates a fault condition, the converter control arrangement (18) modulates the reference current value (Iref) to provide a target current value (Itgt) that is less than the reference current value (Iref).
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