Patent ID: 9522606
Filing Date: 2016-12-20
CPC Classification: B60L,H02M,Y02T

Claim Text:
1. A boost-buck converter control system comprising: a boost-buck converter provided between a charge storage device and a load and including a plurality of switching elements and a reactor, the boost-buck converter boosting or bucking a voltage between a voltage of the charge storing device and a system voltage of the load; and a control apparatus for controlling an operation of the boost-buck converter; a voltage sensor for outputting a sensor output value indicative of the system voltage, wherein the control apparatus calculates a continuation period, in which a voltage difference relative to a reference voltage corresponding to a voltage command of the system voltage continues to be in a same polarity side in a system voltage-related voltage, and corrects a duty ratio of the boost-buck converter in accordance with a calculation value of the continuation period, the continuation period including a predetermined time, in which generation of current stagnation is determined based on the sensor output value of the system voltage, the current stagnation indicating stagnation of a reactor current at immediately before or after a switchover between a boost operation and a buck operation of the boost-buck converter.