Flux-Weakening Control Performance of Partitioned Stator-Switched Flux PM Machines

Evans, D.; Zhan, Hanlin; Wu, Zhongze; Xia, Ge

doi:10.1109/tia.2016.2532290

Cited by 30 publications

(16 citation statements)

References 23 publications

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“…Results show that in order to achieve high torque, the number of poles of the PM stator is always equal to the number of teeth of the wound stator, which is determined by the configuration of the original stator-PM machine. Besides, the control performance of PS machines is analyzed [79]. Results show that the reluctance torque of PS machines is negligible, which is similar to stator-PM machines.…”

Section: Type 4: Partitioned Stator Machinesmentioning

confidence: 97%

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Recent developments and comparative study of magnetically geared machines

Deodhar²,

Pride³

et al. 2018

Trans. Electr. Mach. Syst.

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This paper overviews the recent developments and various topologies of magnetically geared (MGd) machines. Particularly, current design trends and research hotspots of this kind of MGd machines are emphasized, with the aid of statistic summary of the published papers. According to different evolutions from a magnetic gear (MG), four mainstreams of MGd machines are extracted and compared in terms of both mechanical complexity and electromagnetic performance. By virtue of their inherent features, such as high torque density and multi-power port, the feasibility of MGd machines for applications, where continuously variable transmission (CVT) and power split are demanded, is also described.

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Section: Type 4: Partitioned Stator Machinesmentioning

confidence: 97%

“…Of course, this will lead to torque reduction. [12,[71][72][73][74][75][76][77][78][79][80][81][82] Another type of MGd machine, i.e. partitioned stator (PS) machine, is newly developed based on the synergies of MGs and stator-PM machines [12], as shown in Fig.…”

Section: Type 3: Mechanically and Magnetically Coupled Machinesmentioning

confidence: 99%

Recent developments and comparative study of magnetically geared machines

Deodhar²,

Pride³

et al. 2018

Trans. Electr. Mach. Syst.

Self Cite

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“…Based on the foregoing evolution from stator PM and wound field machines to PS-SF machine, Figs. 1 and 3, various PS-SF machine configurations can be developed [24,25,[81][82][83][84][85][86][87][88][89][90][91][92][93][94][95][96][97].…”

Section: Ps Switched Flux Machinesmentioning

confidence: 99%

“…Figs. 4-8 illustrate some typical PS-SF machine topologies associated with DS [88,89], FR [81,[90][91][92][93][94][95], and SF [25,[80][81][82][83][84][85][86][87] machines, with either PM or wound field excitation [96,97]. Different numbers of rotor poles and stator winding configurations are also possible [85,91].…”

Section: Ps Switched Flux Machinesmentioning

confidence: 99%

Overview of novel magnetically geared machines with partitioned stators

Zhu

2018

IET Electric Power Applications

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This study overviews recent development of a new class of magnetically geared machine topologies, i.e. partitioned stator (PS) machines. They are developed from magnetic gears and magnetically geared machines, as well as stator permanent magnet (PM) machines (switched flux, flux reversal, and doubly saliency PM), wound field, or hybrid PM and field winding machines. Based on the operating principle, i.e. magnetic gearing effect/air-gap field modulation and flux switching by the salient rotor iron poles, various PS machine topologies are developed. All have features of two stators, two air-gaps, and one segmented ferromagnetic rotor identical to a magnetic gear's modulating rotor. Their inherent relationships are revealed, while their electromagnetic performance is compared. Both PM and wound field PS machines are discussed, together with hybrid excited PS-PM machines and Vernier machines. It shows that all of these PS machines share the same torque production principle and the differences are mainly in PM configurations and relative positions of two stators. All PS machines have higher torque density per copper loss compared with their counterparts of single-stator machines. PS switched flux PM machines can produce the highest torque density per copper loss. Note: G r is the gear ratio, n i is the number of iron pieces, p 1 is the low-speed element pole-pairs, p 2 is the high-speed element pole-pairs, ω i is the ferromagnetic pieces' angular velocity, ω 1 is the low-speed element's angular velocity, ω 2 is the high-speed element's angular velocity. The negative sign indicates opposite rotating directions.

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“…With the identical limitation of bus voltage, current density and wire size, the torque-speed curves of four machines are calculated by using the flux-linkage method [25]. As shown in Figure 17, the maximum torques of HEFS1 and PS-HEFS2 are the lowest and the highest, respectively, and both PS-HEFS machines can perform higher torques in flux enhancing operation.…”

Section: Comparison and Analysismentioning

confidence: 99%

Comparative Investigation of Hybrid Excitation Flux Switching Machines

Wang

et al. 2018

Energies

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In this paper, the effect of partitioned stator (PS) structure and iron flux bridges in hybrid excitation flux switching (HEFS) machines is comprehensively discussed and compared. Firstly, the operating principles of four HEFS machines with single stator and PS respectively with and without iron flux bridges are described. Then an equivalent lumped parameter magnetic circuit model is developed to analyze the characteristics of PS structure and iron flux bridges. In order to achieve a fair comparison among different HEFS machines, the multi-level design optimization method is used to obtain the optimal parameters efficiently, based on which the electromagnetic performances of four machines are comprehensively evaluated by using 2D finite element analysis (2D-FEA). The results reveal that the machines with PS structure can exhibit not only a better flux regulation capability but also a higher torque density than conventional HEFS machines. Moreover, by adopting iron flux bridges, enlarged wide constant power speed region (CPSR) can be achieved, but the PM utilization will be slightly sacrificed.

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Flux-Weakening Control Performance of Partitioned Stator-Switched Flux PM Machines

Cited by 30 publications

References 23 publications

Recent developments and comparative study of magnetically geared machines

Recent developments and comparative study of magnetically geared machines

Overview of novel magnetically geared machines with partitioned stators

Comparative Investigation of Hybrid Excitation Flux Switching Machines

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