| 摘要 |
PROBLEM TO BE SOLVED: To provide a current estimation device capable of suitably suppressing an estimation error of an electric current running through between a battery and an inverter.SOLUTION: A control apparatus, which takes a starter generator as a controlled object, includes a current estimation section and an applied voltage calculation section. The current estimation section estimates an electric current running through a battery and an inverter on the basis of a predetermined d-axis inductance of the starter generator. The applied voltage calculation section operates a voltage amplitude Vamp which is an amplitude of a voltage vector to make a q-axis component 'Vamp×cosδ' of a voltage vector of an inverter follow an induced voltage component 'ωc×Ψa' of the starter generator, provided that a d-axis current in a dq coordinate system is larger than 0.SELECTED DRAWING: Figure 9 |
