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Fault tolerant modular motor drive system

專(zhuān)利號(hào)
US11177761B1
公開(kāi)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(lèi)
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(shū)

According to various embodiments, stator windings can be provided as wave windings (which are common for hairpin/bar conductors) but can also be provided as lap windings. For a wave winding, the winding progresses forward in the stator covering the whole stator periphery. For automation of winding, the bar conductors can be pre-shaped to constitute one positive and one negative coil side. The bar conductors can then be inserted into stator slots and their end-connections can be made at a weld-end side. For standard manufacturing of the hairpin/bar winding, the crown-end for each hairpin/bar can have a constant shape. Utilizing the distributed winding structure, drive modules can be placed uniformly along the stator periphery.

According to various embodiments, the stator windings can be formed from either hairpin/bar conductors or stranded coil conductors and can be provided in the form of integral-slot windings (q is an integer) or in the form of fractional-slot windings (q is not an integer). Embodiments of the present disclosure are not limited to any specific slot-per-pole-per-phase to pole number relationship, are not limited to outer rotor or inner rotor configurations, and are not limited to any specific number of poles, phases, stator slots, or rotor slots. In addition, embodiments of the present disclosure can be utilized in permanent magnet motors, synchronous and asynchronous induction motors, and reluctance motors. Furthermore, embodiments of the present disclosure are applicable to both axial and radial flux topologies and are not limited to any power or speed of application.

權(quán)利要求

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