| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor apparatus capable of being appropriately controlled without need for a sensor for detecting a rotational angle, by improving detection accuracy of a phase of line-to-line induction voltage.SOLUTION: The motor apparatus includes: a stator in which a multi-phase coil is wound around teeth; a motor that drives rotation of a rotor by energizing the coil; an inverter that controls an electric current energizing the coil; and a control section that detects a zero cross timing of a line-to-line current running between coils of respective phases and a zero cross timing of a variation in the line-to-line current and detects a rotational position of the rotor when an optional two-phase coil is short-circuited, and further includes inductances of the respective coils. |
