Generating apparatus and motor control apparatus
AssigneeHitachi, Ltd.
InventorsTatsumi Yamauchi, Shinji Shirakawa, Masahiro Iwamura, Masamitsu Inaba, Keiichi Mashino, Keiji Kunii
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Abstract
A generator having a field coil L, and an SW1 control circuit 2 for controlling field current flowing through the field coil L. When a generating operation of the generator is to be ended, a switch 1 SW1 is turned off to interrupt the field current flowing through the field coil L, and a switch 2 SW2 is turned off to allow the field current remaining the field coil L to the current path including a resistance element 1 with a resistance element capable of quickly attenuating the field current.
Claims9
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.
A generating apparatus comprising:
- a generator having a field coil;
- a field current controller for controlling field current flowing through said field coil;
- a host controller capable of controlling said field current controller;
- and
- a quick field control circuit block being configured to interrupt field current flowing through said field coil and to allow the field current remaining in said field coil to flow through a current path with a resistance element capable of attenuating the field current;
- and
- wherein said field current controller controls said quick field control circuit block in accordance with an instruction from said host controller for attenuating the field current.
Dependencies are inferred from the claim text.