发明名称 |
Fuel cell system having a converter which increases an output voltage of a fuel cell |
摘要 |
A fuel cell system includes: a converter disposed between a fuel cell and a load to increase an output voltage of the fuel cell; and a control unit that controls the converter at a predetermined duty ratio, wherein the control unit determines a duty command value for the converter from a feed-forward duty and a feed-back duty which are calculated using a command value of a reactor current that flows through a reactor in the converter and/or using a measurement value of the reactor current. In a low-load operation, the control unit sets, as a measurement value of the reactor current, a value obtained by multiplying a midpoint measurement value measured at an intermediate time of an on-duty period by a predetermined coefficient. |
申请公布号 |
US9124192(B2) |
申请公布日期 |
2015.09.01 |
申请号 |
US201113824743 |
申请日期 |
2011.12.28 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
Kaneko Tomohiko |
分类号 |
G05F1/00;H02M7/537;H02M7/515;B60L11/18;H01M8/04;H01M16/00;G05F5/00 |
主分类号 |
G05F1/00 |
代理机构 |
Kenyon & Kenyon LLP |
代理人 |
Kenyon & Kenyon LLP |
主权项 |
1. A fuel cell system comprising:
a converter disposed between a fuel cell and a load to increase an output voltage of the fuel cell; and a control unit that controls the converter at a predetermined duty ratio, wherein the control unit determines a duty command value for the converter from a feed-forward duty and a feed-back duty, wherein the feed-forward duty and the feed-back duty are calculated using a command value of a reactor current that flows through a reactor in the converter and/or using a measurement value of the reactor current, wherein, in a low-load operation in which a required output from the fuel cell is equal to or lower than a predetermined value, the control unit sets a value obtained by multiplying a midpoint measurement value measured at an intermediate time of an on-duty period by a predetermined coefficient, and wherein the value corresponds to a measurement value of the reactor current that increases and decreases along with switching control of a switching device in the converter at a predetermined duty ratio. |
地址 |
Toyota-Shi JP |