Output control apparatus for electric motor and method for controlling output of electric motor

摘要

An output control apparatus for an electric motor includes a phase-current instruction-value setting device, a draw-current allowable-value storage device, a phase-current allowable-value setting device, and a phase-current instruction-value limiting device. The draw-current allowable-value storage device is configured to store a draw current allowable value of an electric storage device corresponding to an allowable current value of a system disconnecting-connecting device provided in a power system from the electric storage device to the electric motor. The phase-current allowable-value setting device is configured to set a phase current allowable value based on the draw current allowable value and an ON time of a switching element in a power converter. The phase-current instruction-value limiting device is configured to compare the phase current instruction value with the phase current allowable value to limit the phase current instruction value so as not to exceed the phase current allowable value.

主权项

1. An output control apparatus for an electric motor, the output control apparatus comprising:
a phase-current instruction-value setting device configured to set a phase current instruction value of the electric motor based on a request to the electric motor to which electric power is supplied from at least an electric storage device via a power converter including a switching element; a draw-current allowable-value storage device configured to store previously a draw current allowable value of the electric storage device corresponding to an allowable current value of a system disconnecting-connecting device provided in a power system from the electric storage device to the electric motor; a phase-current allowable-value setting device configured to set a phase current allowable value based on the draw current allowable value and an ON time of the switching element in the power converter; and a phase-current instruction-value limiting device configured to compare the phase current instruction value with the phase current allowable value to limit the phase current instruction value so as not to exceed the phase current allowable value.