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1. (WO2017033908) POWER CONVERSION CIRCUIT CONTROL DEVICE

Pub. No.:    WO/2017/033908    International Application No.:    PCT/JP2016/074449
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Wed Aug 24 01:59:59 CEST 2016
IPC: H02M 3/155
H02M 3/28
Applicants: NAGASAKI UNIVERSITY
国立大学法人 長崎大学
Inventors: KUROKAWA, Fujio
黒川 不二雄
Title: POWER CONVERSION CIRCUIT CONTROL DEVICE
Abstract:
[Problem] To provide a power conversion circuit control device with which, upon transition of control from normal mode to current limit mode, an output current or output voltage can rapidly converge to a predetermined value without causing vibrations in the output current or output voltage. [Solution] A control device 1 is provided with: an overcurrent detection unit 11 which detects an output current io exceeding a limit value; a first control unit 12 which generates a control signal in normal mode; a second control unit 13 which generates a control signal in current limit mode; and a control signal selection unit which selects the control signal generated by the first control unit 12 or the control signal generated by the second control unit 13. The first control unit generates the control signal in normal mode on the basis of a dynamic characteristics arithmetic expression which includes an output voltage of a power conversion circuit 4 and which is dependent on time. The second control unit generates the control signal in current limit mode by detecting a load resistance and on the basis of a static characteristics arithmetic expression which includes a resistance value and an output current preset value and which is not dependent on time.