Power capability of salient pole permanent magnet synchronous motors in variable speed drive applications

Schiferl, R.F.; Lipo, T.Α.

doi:10.1109/28.52682

Cited by 313 publications

(115 citation statements)

References 6 publications

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“…condition as a prerequisite for achieving wide ranges of constant-power operation in IPM machines has been known for some time [3]. This paper further highlights the significance of this ratio as the limiting amplitude value of the steady-state machine phase current during UCG mode operation at high speeds.…”

Section: A Postshutdown Current Amplitudementioning

confidence: 83%

“…Key normalized parameters of this machine are (15) (16) More details about this machine are provided in the Appendix. The fact that the normalized values of and are nearly identical reflects the key machine design requirement for optimal flux weakening [3], [7]. It should be noted that the parameters given in (15) and (16) are for the unsaturated machine; the impact of saturation will be discussed later in this paper.…”

Section: Steady-state Resultsmentioning

confidence: 99%

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Uncontrolled generator operation of interior PM synchronous machines following high-speed inverter shutdown

Jahns

Caliskan

1999

IEEE Trans. on Ind. Applicat.

125

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Abstract-Interior permanent magnet (IPM) synchronous machine drives are vulnerable to a special fault mode when gating is suddenly removed from the inverter switches during highspeed operation. The resulting IPM machine operation as a generator in combination with an uncontrolled rectifier must be properly understood and accounted for in the machine design to avoid damage to either the machine or inverter. An approximate closed-form solution is derived in this paper which relates the resulting machine phase current (and torque) to the IPM machine parameters, the dc-link voltage, and the rotor speed. The resulting operating characteristics are particularly interesting for IPM machines that have been designed with inductance saliency ratios greater than 2 (i.e., high-saliency machines). The validity of the approximate solution is confirmed using dynamic simulation results, and the implications of these results for the machine designer seeking to minimize or eliminate the impact of this undesired operating mode are thoroughly discussed.Index Terms-Generator, interior permanent magnet synchronous machine, inverter shutdown.

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Section: A Postshutdown Current Amplitudementioning

confidence: 83%

Section: Steady-state Resultsmentioning

confidence: 99%

Uncontrolled generator operation of interior PM synchronous machines following high-speed inverter shutdown

Jahns

Caliskan

1999

IEEE Trans. on Ind. Applicat.

125

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“…Then Schiferl and Lipo [6] in 1990 developed the criteria for optimum field-weakening design criteria expressed by Eq. (16).…”

Section: Research Summarymentioning

confidence: 99%

Fractional-Slot Surface Mounted PM Motors with Concentrated Windings for HEV Traction Drives

Bailey¹

2005

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“…This parameter plane is used to show how the FreedomCAR performance requirements constrain the allowable machine design. Earlier research work looking at the optimal selection of PM machine parameters for field-weakening performance have largely focussed on interior PM machines [3]- [5] and treated surface PM machines as simply a special case of an interior PM machine. These earlier studies showed that ideally the characteristic current should be equal to the rated current.…”

Section: Introductionmentioning

confidence: 99%

Surface PM Machine Parameter Selection for Wide Field-Weakening Applications

Soong

Reddy

El-Refaie

et al. 2007

2007 IEEE Industry Applications Annual Meeting

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Abstract-Recent work on fractional-slot pitch, concentrated winding (FSCW) surface PM machines has shown that these machines can achieve a wide constant-power speed range. This paper shows that defining the allowable machine design parameter plane using the characteristic current and the peak back-emf provides useful insights into how application requirements restrict the machine parameters. The parameter plane also shows the influence of changing the parameters on the machine's current rating and magnet losses. As an example of a practical application, the parameter plane is used to study the FreedomCAR traction motor drive requirements and the characteristics of five FSCW surface PM machine designs.

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Power capability of salient pole permanent magnet synchronous motors in variable speed drive applications

Cited by 313 publications

References 6 publications

Uncontrolled generator operation of interior PM synchronous machines following high-speed inverter shutdown

Uncontrolled generator operation of interior PM synchronous machines following high-speed inverter shutdown

Fractional-Slot Surface Mounted PM Motors with Concentrated Windings for HEV Traction Drives

Surface PM Machine Parameter Selection for Wide Field-Weakening Applications

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