Title:
ELECTRIC DRIVE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/249568
Kind Code:
A1
Abstract:
This electric drive system comprises a rotating electric machine and a drive device. The stator coil of the rotating electric machine has: a first system winding (160A) mounted on a stator core with a spatial phase difference of 0° with respect to a reference phase; and a second system winding (160B) mounted on the stator core with a spatial phase difference of n° with respect to the reference phase. The first and second system windings (160A, 160B) each have a first circuit (C11, C21) and a second circuit (C12, C22) which are connected in series, said first circuit (C11, C21) being formed by an outer diameter side coil, said second circuit (C12, C22) being a parallel circuit formed by an inner diameter side coil having a smaller thickness than that of the outer diameter side coil. The drive device has first and second inverters (171A, 171B) connected to the first and second system windings (160A, 160B) and applies voltage to the first and second system windings (160A, 160B) with the spatial phase difference of n°.
Inventors:
HORI MASAHIRO (JP)
TOKUYAMA TAKESHI (JP)
SAWAHATA MASANORI (JP)
GOTO HIDEAKI (JP)
TOKUYAMA TAKESHI (JP)
SAWAHATA MASANORI (JP)
GOTO HIDEAKI (JP)
Application Number:
PCT/JP2022/004889
Publication Date:
December 01, 2022
Filing Date:
February 08, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02P25/22; H02K3/28
Domestic Patent References:
| WO2019159579A1 | 2019-08-22 |
Foreign References:
| JP2012157236A | 2012-08-16 | |||
| JP2016167963A | 2016-09-15 | |||
| JP2016154445A | 2016-08-25 | |||
| JP2014090615A | 2014-05-15 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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