| US 7,453,240 B2 | ||
| Generating apparatus and motor control apparatus | ||
| Tatsumi Yamauchi, Hitachiota (Japan); Shinji Shirakawa, Hitachi (Japan); Masahiro Iwamura, Hitachi (Japan); Masamitsu Inaba, Hitachi (Japan); Keiichi Mashino, Hitachinaka (Japan); and Keiji Kunii, Hitachiota (Japan) | ||
| Assigned to Hitachi, Ltd., Tokyo (Japan) | ||
| Filed on Feb. 17, 2006, as Appl. No. 11/356,075. | ||
| Claims priority of application No. 2005-050058 (JP), filed on Feb. 25, 2005. | ||
| Prior Publication US 2006/0192534 A1, Aug. 31, 2006 | ||
| Int. Cl. H02P 3/00 (2006.01) | ||
| U.S. Cl. 322—12 [322/18; 322/19; 322/28; 322/29] | 9 Claims |
| 1. A generating apparatus comprising:
a generator having a field coil;
a field current controller for controlling field current flowing through said field coil; and
a quick field control circuit block for interrupting the field current flowing through said field coil and for allowing the
field current remaining in said field coil to flow through a current path with a resistance element capable of quickly attenuating
the field current.
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