Patent ID: 9130448
Filing Date: 2015-09-08
Classification: H02J,H02M,Y02E

Abstract:
1. A converter control arrangement for regulating the output voltage of a dc source power converter, the converter control arrangement comprising: a dynamic droop control device comprising a first droop controller and a second droop controller, each of the first droop controller and the second droop controller comprising an associated droop rate, the associated droop rate of the second droop controller being greater than the associated droop rate of the first droop controller; a voltage regulator configured to regulate the output voltage of the dc source power converter based on a comparison of an output voltage value of the dc source power converter with a target voltage value, the target voltage value being derived by combining a reference voltage value and a droop voltage value provided by the dynamic droop control device, the first droop controller being configured to control the droop voltage value provided by the dynamic droop control device when an output current value of the dc source power converter is less than a reference current value, and the second droop controller being configured to control the droop voltage value provided by the dynamic droop control device when the output current value of the dc source power converter is greater than the reference current value, the dynamic droop control device further comprising a current comparator configured to compare the output current value of the dc source power converter with the reference current value to generate a current error value signal, and each of the first and second droop controllers being coupled to the current comparator and configured to receive the current error value signal as an input, the first and second droop controllers configured to output a first droop voltage signal and a second droop voltage signal respectively, wherein the reference current value is the desired output current value of the dc source power converter and defines, in combination with the reference voltage value, a target operating point.