The development of a new 3:1 pole-changing motor

Rawcliffe, G.H.; Jayawant, B.V.

doi:10.1049/pi-a.1956.0092

Cited by 21 publications

(6 citation statements)

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“…Serious proposals for wide ratio might have started with the pioneer works of [3] and [4] both research groups working parallel to each other, reaching almost the same result, proposing 1:3 ratio pole changing winding with ideal (inherently balanced) characteristics. They admit, however, "it is not suggested that this phenomenon is likely to have any application but is of interest as an instructional demonstration".…”

Section: Astesj Issn: 2415-6698mentioning

confidence: 99%

Pole-Changing Windings for Close Ratio and 1:N Ratio Using the 3//Y / 3//Y Method

Kovács¹

2018

Adv. sci. technol. eng. syst. j.

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Requirement for pole-changing motors emerged at the very early times of asynchronous motor design. Different solutions have been elaborated and some of them are generally used. One of these solutions in use is the so called pole phase modulation method. The so called 3 Y / 3 Y pole-changing winding being subject of this paper belongs to this group. This paper presents a new approach to this method. A new, complete and comprehensive study is introduced, including features and, moreover, detailed design guidelines. The method is applicable for any pole combination for the so called close ratio without any further particular consideration. As the target of the paper is to provide solution for high power application, it does not deal with balancing methods, but as a novelty, calculates the effect of those disadvantageous phenomena (asymmetries, even harmonics) in order to enable the designer for evaluation and decision. The study also reveals as a novelty that the same method is suitable for wide ratio as well, moreover, a new solution for theoretically infinite ratio expressed in 1:N, with supply voltage system of N phase is proposed. Using this motor, a new and complete drive system has been proposed with subject pole changing motor as core element as the most appropriate arrangement of high power main marine propulsion drive.

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Section: Astesj Issn: 2415-6698mentioning

confidence: 99%

Pole-Changing Windings for Close Ratio and 1:N Ratio Using the 3//Y / 3//Y Method

Kovács¹

2018

Adv. sci. technol. eng. syst. j.

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“…Thus, these features support and make multi-phase IMD more suitable for EV applications [9,10]. Above all, the pole-changing structure of the E-PC IMD improves the range for both speed and torque [5,8,12,13].…”

Section: Introductionmentioning

confidence: 99%

DC-Decoupled based Multi-phase Inverter Topology for Electronic Pole-changing Induction Motor Drive

Ch¹,

Sonti²,

Jain³

et al. 2022

Preprint

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<p>This paper proposes a DC-Decoupled based multi-phase inverter (DCDMI) topology for electronic-pole changing (E-PC) induction motor drive (IMD) system. The given E-PC IMD with flexible wide speed and torque ranges, operates in two modes: 3-φ,12-pole and 9-φ, 4-pole mode. However, during the operation of E-PC IMD, a prevalent torque ripple exists, especially in high-pole mode. Torque ripples are due to harmonics in the stator periphery. The harmonics are attributed to common-mode current (CMC) produced by common-mode voltage (CMV) of the inverter that drives IMD. Consequently, this results in deterioration of drive performance. This paper proposes a new inverter topology for E-PC IMD, which minimizes the transitions in CMV both operating modes. Subsequently, the CMC in the stator periphery is minimized in both the modes. The required analysis and derivation for the expression of terminal voltages are also presented in this manuscript. Further, in the proposed system an interleaved switching strategy which is integrated with the DC-decoupling technique improves the over-all performance in 3-φ mode. To validate the results of the proposed DCDMI topology, a 36-slot 3.0HP 3-φ, 12-pole IM is designed, simulated, and analyzed in an Ansys environment. Simulated results are corroborated by experimentation.</p>

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“…Effective torque control technology deployed during the pole-changing transition of a 3:1 pole IM was recently proposed by John W. Kelly and Elias G. Strangas [8]. In reference [9], the winding design strategy using the PPM method was presented, and the performance of a multiphase induction machine with a 1:3 speed ratio was comparatively studied.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of variable speed multiphase induction motor with pole phase modulation

Liu

Wang

Zhang

2016

Archives of Electrical Engineering

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Abstract:The pole phase modulation (PPM) technique is an effective method to extend speed range and torque capabilities for an integrated starter and hybrid electric vehicles applications. In this paper, the five pole-phase combination types of a multiphase induction motor (IM) with 36 stator slots and 36 stator conductors are presented and compared quantitatively by using the time-stepping finite element method (TS-FEM). The 36 stator conductors of the proposed multiphase IM are fed by a 36 leg inverter and the current phase angle and amplitude of each stator conductor can be controlled independently. This paper focuses on the winding connection, the PPM technique and the performance comparative analysis of each pole-phase combination types of the proposed multiphase IM. The flux distribution, air-gap flux density, output torque, core losses and efficiency of five pole-phase combination types have been investigated.

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The development of a new 3:1 pole-changing motor

Cited by 21 publications

References 0 publications

Pole-Changing Windings for Close Ratio and 1:N Ratio Using the 3//Y / 3//Y Method

Pole-Changing Windings for Close Ratio and 1:N Ratio Using the 3//Y / 3//Y Method

DC-Decoupled based Multi-phase Inverter Topology for Electronic Pole-changing Induction Motor Drive

Performance analysis of variable speed multiphase induction motor with pole phase modulation

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