Patent ID: 6995544
Filing Date: 2006-02-07
Classification: H02P

Abstract:
1. An electric generator control apparatus, comprising: a control voltage limiter circuit for limiting a control voltage set in conformance with a voltage indicating command in response to a limiter circuit control signal mentioned underneath; a field current control circuit for controlling a field current for an electric generator on the basis of said control voltage supplied through the medium of said control voltage limiter circuit; a temperature sensor for detecting an ambient temperature; a first comparator for comparing said ambient temperature with a first activation temperature and a first reset temperature, respectively; and a second comparator for comparing said ambient temperature with a second activation temperature and a second reset temperature higher than said first activation temperature, wherein said first comparator is so designed as to output a limiter circuit control signal for putting into operation said control voltage limiter circuit when said ambient temperature becomes higher than said first activation temperature inclusive while resetting said limiter circuit control signal when said ambient temperature becomes lower than said first reset temperature inclusive, and wherein said second comparator is so designed as to output a field current interrupt control signal for interrupting said field current control circuit when said ambient temperature becomes higher than said second activation temperature inclusive while resetting said field current interrupt control signal when said ambient temperature becomes lower than said second reset temperature inclusive.