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Fault tolerant modular motor drive system

專利號(hào)
US11177761B1
公開日期
2021-11-16
申請(qǐng)人
ABB Schweiz AG(CH Baden)
發(fā)明人
Md Ashfanoor Kabir; Bahareh Anvari; Jukka T. Jarvinen; Ghanshyam Shrestha
IPC分類
H02P1/32; H02P3/20; H02P9/06; H02P29/028; H02P27/06; H02P25/22
技術(shù)領(lǐng)域
stator,drive,phase,respective,modules,ninv,module,conductors,conductor,poly
地域: Baden

摘要

An electric machine includes a rotor and a stator. The stator includes a stator core having a plurality of slots. The stator further includes a plurality of drive modules configured to collectively produce an aggregate rotating magnetic field. Each respective drive module includes a power supply configured to generate a respective poly-phase alternating current (AC) output and is connected to a plurality of respective conductor windings. Each respective conductor winding includes a plurality of respective conductors, each respective conductor configured to carry a respective phase of the respective poly-phase AC output. Each respective drive module is configured to generate a rotating, poly-phase, multipole magnetic field. The rotating, poly-phase, multipole magnetic field is a superimposition of a plurality of respective mono-phase, multiple magnetic fields being generated by a respective conductor of the respective conductor winding.

說(shuō)明書

In the winding scheme illustrated in FIG. 2, the first slot from each phase for each pole is occupied by conductors of the first drive module, the second slot from each phase for each pole is occupied by conductors of the second drive module, the third slot from each phase for each pole is occupied by conductors of the third drive module, and the fourth slot from each phase for each pole is occupied by conductors of the fourth drive module. For example, stator slots 1, 13, 25, and 37 are all occupied by two layers of hairpin/bar conductors that each carries the phase A output of an inverter of a first drive module, and stator slots 2, 14, 26, and 38 are all occupied by two layers of hairpin/bar conductors that each carries the phase A output of an inverter of a second drive module. Therefore, each hairpin/bar conductor has a crown-end pitch of 12 stator slots. The uniform distribution provided by this scheme (in which, for each phase, the slot number occupied by conductors of a particular module corresponds to the module number) results in a uniform generation of magnetic flux by each drive module.

權(quán)利要求

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