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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

FIG. 2 illustrates the assignment of conductors of distributed conductor windings of independent drive modules of a four-pole, three-phase electric machine according to an embodiment. FIG. 2 illustrates (in the top two rows thereof) the assignment of conductors of the distributed windings of the four independent drive modules to the 48 stator slots. FIG. 2 also illustrates (in the bottom two rows thereof), for a single phase (phase A) of each of the four drive modules, crown ends of the hairpin/bar conductors (e.g. a crown end 13 of a hairpin/bar conductor 10 as illustrated in FIG. 1) that connect the positive coil sides and the negative coil sides occupying individual stator slots in a wave winding progression. The wave winding layout illustrated in FIG. 2 is a two-layer winding where each stator slot is occupied by two layers of hairpin/bar conductors that each correspond to the same phase of the three phase output provided by an inverter of a particular drive module. In particular, each of the stator slots 1-48 illustrated in FIG. 2 is occupied by two positive coil sides or two negative coil sides of hairpin/bar conductors (e.g. positive coil side 11 or negative coil side 12 of a hairpin bar conductor 10 as illustrated in FIG. 1). Although FIG. 2 illustrates a two-layer winding, alternative embodiments may include single layer windings as well as windings with more than two layers.

權(quán)利要求

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