A voltage conversion control device (60) is used for controlling a voltage converter (10) provided with an upper switching element (Q1) and a lower switching element (Q2), and comprises: a calculation means (614, 615) for calculating a duty ratio (D) so that the output current (IL) of a power storage device arrives at a target value (IL*) and the duty ratio is kept within a predetermined tolerance range; a limit-relaxing means (616) for relaxing the upper limit value and/or the lower limit value of the tolerance range on the basis of the magnitude relationship between a predetermined threshold value and an electric current deviation obtained by subtracting the output current from the target value; and a control means (618) for controlling the upper switching element and the lower switching element so as to control switching in correspondence to the duty ratio calculated by the calculation means.
Voltage conversion control device
2015-06-03
Patent
Electronic Resource
English
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
VOLTAGE CONVERSION DEVICE, AND CONTROL DEVICE FOR VOLTAGE CONVERSION DEVICE
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