Calculation of the electromagnetic characteristics of an electrically excited synchronous motor for an EV

Strauch, Mirco; Dewenter, Stefan; Binder, A.; Nam, Kwanghee

doi:10.1109/vppc.2012.6422786

Cited by 16 publications

(3 citation statements)

References 4 publications

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“…As per (23) and (24), the torque decreases with increasing σ,ifk g and k f remain constant, which means more MMF is needed for the same torque. To keep σ low, the slots shall be as wide and shallow as possible (see (22)).…”

Section: Torque Equationmentioning

confidence: 93%

“…The ratio between the main and the total flux, Φ m,w and (Φ m,w + Φ σ,w ), is defined as k σ which is derived from σ, as per (23). The effective stator winding MMF, F w,eff , is then…”

Section: Torque Equationmentioning

confidence: 99%

“…The PF is the ratio of the active and apparent power ( P and S ). If the fundamental harmonic components of the voltage and current are much higher than the higher harmonic components (low total harmonic distortion (THD) of the voltage and current), which is often the case with the flux‐modulated machines [22], the PF is calculated simply as the cosine of the displacement between the voltage and current (phase angle φ )

PF = \frac{P}{S} = \cos φ

To understand the cause of the low PF, the flux‐modulated machine will be presented with a per‐phase equivalent circuit of a synchronous machine operating in a steady state [23] and with the copper and iron losses neglected as in Fig. 3.…”

Section: Pf Equationmentioning

confidence: 99%

See 2 more Smart Citations

Design of a permanent‐magnet flux‐modulated machine with a high torque density and high power factor

Vukotić¹,

Miljavec

2016

IET Electric Power Applications

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This study presents a novel approach to the design process of a permanent-magnet flux-modulated machine by simultaneously focusing on the machine major advantage and disadvantage, that is, the high torque density and low power factor. The machine can be designed with a high power factor while retaining the high torque density. To do so, they both need to be described precisely. The torque equation is improved by considering the stator-winding leakage flux. It determines the relation between the geometric parameters and the torque more accurately. The power-factor equation is derived from the electric equivalent circuit representing the simplest description of the machine. The machine geometry optimised with the design of experiments via Taguchi methods assures the best possible performance within the set limitations. It is shown that using the proposed design process makes the permanentmagnet flux-modulated machine more appropriate than the classical synchronous machine for the direct drive applications requiring a high torque density, low weight and high efficiency.

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Section: Torque Equationmentioning

confidence: 93%

Section: Torque Equationmentioning

confidence: 99%