| US 7,525,278 B2 | ||
| Voltage conversion apparatus, power output apparatus, and control method of voltage converter | ||
| Kiyoe Ochiai, Nagoya (Japan); and Hiroyuki Oyanagi, Toyota (Japan) | ||
| Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota (Japan) | ||
| Filed on Dec. 29, 2006, as Appl. No. 11/647,237. | ||
| Claims priority of application No. 2006-034195 (JP), filed on Feb. 10, 2006. | ||
| Prior Publication US 2007/0200521 A1, Aug. 30, 2007 | ||
| Int. Cl. H02P 1/46 (2006.01) | ||
| U.S. Cl. 318—779 [318/105; 318/376; 307/149; 363/37] | 14 Claims |
| 1. A voltage conversion apparatus comprising:
a voltage converter provided between a DC power source and a driving device driving at least one electric motor in one of
a power running mode and regeneration mode,
a control device configured to boost voltage from said DC power source within a range not exceeding an upper limit value by
controlling said voltage converter,
a sensor device sensing power input to and output from said DC power source, and
said control device reducing said upper limit value in an event of an integrated value of change in said power for a first
predetermined period becoming lower than a first threshold value that is negative in a case where a sign of said power, when
output from said DC power source, is positive.
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