POWER DEVICE

摘要

A control device controls first and second direct-current power converter circuits so that a switching operation for at least one of a pair of first and second switching devices included in the first direct-current power converter circuit and a pair of first and third switching devices included in the second direct-current power converter circuit is performed. The control device controls a switching operation of the first switching device and the second switching device included in the first direct-current power converter circuit based on a first duty. In the switching operation, the first switching device and the second switching device are inverted and the alternative close and open (ON/OFF) switching operations of each first and second switching device are performed. The control device controls a switching operation of the first switching device and the third switching device included in the second direct-current power converter circuit based on a second duty.

主权项

1. A power device, comprising:
a first power source and a second power source; a load configured to be driven by power supplied from the first power source and the second power source; and a voltage control unit configured to control a voltage to be applied to the load, the voltage control unit comprising:
a first reactor and a second reactor;a plurality of switches;at least one of a first step-up circuit and a second step-up circuit; andfirst to sixth nodes, a positive electrode of the second power source being connected to the first node, a negative electrode of the second power source being connected to the second node, a positive electrode of the first power source being connected to the third node, a negative electrode of the first power source being connected to the fourth node, a first end of the second reactor being connected to the fifth node, and a second end of the second reactor being connected to the second node, a first end of the first reactor being connected to the sixth node, and a second end of the first reactor being connected to the third node, the plurality of switches comprising:
a first switch which has two ends, each of which is connected to one of both the fifth node and the sixth node, both the second node and the sixth node, and both the fifth node and the third node;a second switch which has two ends, each of which is connected to both the sixth node and the fourth node; anda third switch which has two ends, each of which is connected to both the first node and the fifth node, the first step-up circuit comprising the first reactor, and the first and second switches, and being connected to the first power source, the second step-up circuit comprising the second reactor, and the first and third switches, and being connected to the second power source, and the voltage control unit being configured to control the voltage to be applied to the load to be an arbitrary voltage equal to or more than a summed voltage of a voltage of the first power source and a voltage of the second power source based on a duty of an ON and OFF switching operation of the switch.