Patent ID: 7514906
Filing Date: 2009-04-07
Classification: H02J,H02M,H02P,Y02T

Abstract:
1. An automotive rotary electrical apparatus comprising: a rotary electric machine having an armature coil and a field coil, and coupled to an engine mounted on a vehicle; and a control device having wherein the field drive circuit has wherein the field control circuit is configured so as to supply the first switching control element with a first control signal including an on-level signal for turning on the first switching control element and an off-level signal for turning off the first switching control element, and to supply the second switching control element with a second control signal including an on-level signal for turning on the second switching control element and an off-level signal for turning off the second switching control element, wherein in a case in which the feeder circuit for the field circuit is normal, the field control circuit controls the second switching control element to be an always-on state by controlling the second control signal to be kept as the on-level signal, and performs on/off control of the first switching control element at a controlled duty ratio by controlling the first control signal to repeat alternating between the on-level signal and the off-level signal at the controlled duty ratio, and wherein in a case in which one of a short-to-power malfunction of the positive field terminal and a short-circuit malfunction of the first switching control element has occurred in the feeder circuit for the field coil, the field control circuit switches the first control signal to the on-level signal while keeping the second control signal as the on-level signal, then switches the second control signal to the off-level signal while keeping the first control signal as the on-level signal, and further switches the first control signal to the off-level signal while keeping the second control signal to the off-level signal.