Back to results
US 2020/0395883 A1Published application
Ac rotary machine apparatus
AssigneeMitsubishi Electric Corporation
InventorsNaoyuki IWAMOTO, Akitoshi TAKAYA
Life of this patent
Estimating the term…
Abstract
With the object of preventing deterioration due to the temperature when charging a secondary battery, a configuration is such that currents are controlled so as to be caused to flow equally through the respective phases of three-phase coils of a second group which configure an AC rotary machine body, whereby a large current is caused to flow for a short time, causing the secondary battery to rise in temperature, even when the AC rotary machine body is in a state of rest.
Claims5
1-3. (canceled)
An AC rotary machine apparatus, comprising:
- an AC rotary machine body which has a magneto rotor and has first three-phase coils and second three-phase coils for generating rotating magnetic fields in the rotor;
- a secondary battery which supplies power to the first and second three-phase coils;
- and
- a power conversion device which converts direct current generated by the secondary battery to alternating currents, wherein
- the rotary torque of the AC rotary machine body is controlled by controlling the alternating currents generated by the power conversion device, the apparatus being characterized in that
- the power conversion device, including a temperature sensor provided on the AC rotary machine apparatus, is configured so that when it is determined, based on temperature information of the temperature sensor, to need a rise in temperature, three-phase alternating currents which are of the same magnitude as and different in phase by 180 degrees from those of the U-phase, V-phase, and W-phase of the first three-phase coils are respectively supplied to the X-phase, Y-phase, and Z-phase of the second three-phase coils in the AC rotary machine body.
3 more elements
Dependencies are inferred from the claim text.