Optimization of the winding arrangement to increase the leakage inductance of a synchronous machine with multi-functional converter drive

Hackner, Thomas; Pforr, Johannes

doi:10.1109/ecce.2011.6063965

Cited by 2 publications

(3 citation statements)

References 9 publications

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“…Although the motor losses of the MFCS increase, they can be mitigated by proper design of motor winding layout with larger L 0 . For example, [22] and [23] presented that a motor with a two-layer fractional slot winding has bigger leakage inductance than the motor with side-byside placed winding. Thirdly, the 20 kHz harmonic voltage (20kHV) amplitude of u CN in the MFCS is larger than that in the standard topology (9.48 V to 0.37 V).…”

Section: A Steady-state Performancementioning

confidence: 99%

Modeling, Control, and Experimental Evaluation of Multifunctional Converter System

Zhang

Gauthier²,

Lin-Shi³

et al. 2021

IEEE Trans. Ind. Electron.

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The multi-functional converter system (MFCS) is a special topology of three-phase AC motor drives, which inherently integrates a DC-voltage regulation function. Firstly, in order to explain the mechanism of the MFCS, an average model is derived. An equivalent circuit is developed, which explicitly reveals that the MFCS is equivalent to a cascaded DC/DC converter-DC motor drive system. Secondly, the inverter's mean duty-cycle is identified as an independent control degree of freedom for the DC-bus voltage. Then, the influence of pulse width modulation (PWM) on the DC-bus voltage is studied. It concludes that space vector PWM is invalid for the MFCS. To address this problem, the zero-sequence voltage injection PWM (ZSVIPWM) is proposed and actually sinusoidal PWM is a special case of the ZSVIPWM. Thirdly, an overall control strategy is proposed for the MFCS, which includes not only the vector control for the motor but also a closedloop control for the DC-bus voltage. Finally, comparative experiments with the standard topology are carried out on a permanent magnet synchronous machine prototype to verify these theoretical analyses and the control strategy.

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Section: A Steady-state Performancementioning

confidence: 99%

Modeling, Control, and Experimental Evaluation of Multifunctional Converter System

Zhang

Gauthier²,

Lin-Shi³

et al. 2021

IEEE Trans. Ind. Electron.

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show abstract

Section: Introductionmentioning

confidence: 99%

“…An extensive work (Bahmani & Thiringer, 2015;Choi et al, 2012;Ferrell et al, 2004;Hackner & Pforr, 2011;Margueron et al, 2010;Ortiz et al, 2010;Ouyang et al, 2009) is carried out to increase the intrinsic resonance inductance of the main transformer. Some (Hackner & Pforr, 2011;Ouyang et al, 2009) have studied the increase of total leakage inductance by employing new winding strategies. In (Bahmani & Thiringer, 2015;Choi et al, 2012;Ferrell et al, 2004;Margueron et al, 2010;Ortiz et al, 2010), the total resonance inductance is increased by expanding the inter-winding distance between the windings.…”

Section: Introductionmentioning

confidence: 99%

Contribution of leakage flux to the total losses in transformers with magnetic shunt

Bakar

Haller

Bertilsson

2020

International Journal of Electronics

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To execute soft switching methods in resonant power converters, transformers with larger leakage inductance are getting more attention. Many papers have constructed various concepts in this regard. However, a discussion about, how the transformer efficiency is affected is lacking in the literature. This paper analyses the effects of the increased leakage inductance on the performance of the transformer. A transformer for increased leakage inductance is modelled and constructed to investigate the losses. The model discusses the effects of increased leakage inductance either by increasing the inter-winding spacing or by integrating the magnetic shunt within the transformer. The investigations show that increasing the leakage inductance by inserting a magnetic shunt can have severe degrading effects on the performance of the transformer, if not designed adequately. Additional losses are also calculated and the effects are verified by the experiments.

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Optimization of the winding arrangement to increase the leakage inductance of a synchronous machine with multi-functional converter drive

Cited by 2 publications

References 9 publications

Modeling, Control, and Experimental Evaluation of Multifunctional Converter System

Modeling, Control, and Experimental Evaluation of Multifunctional Converter System

Contribution of leakage flux to the total losses in transformers with magnetic shunt

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