Phase voltage harmonic imbalance in asymmetrical multiphase machines with single neutral point

Zoric, Ivan; Jones, M.; Levi, E.

doi:10.1109/iecon.2016.7793473

Cited by 3 publications

(5 citation statements)

References 19 publications

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“…By using this transformation matrix, the projections of the leg and phase voltage space vectors into 0 + –0 − plane are still not the same, but they have now identical projections onto the 0 − axis. In fact, the 0 + axis now represents CMV [5], which is normally not considered in space vector algorithms. Therefore, by not considering the 0 + axis, the projections of phase voltage and leg voltage space vectors are now identical.…”

Section: Space Vector Algorithmmentioning

confidence: 99%

Space vector PWM technique for a two‐level asymmetrical six‐phase drive

Ariff

Dordevic

2019

J. eng.

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Section: Space Vector Algorithmmentioning

confidence: 99%

Space vector PWM technique for a two‐level asymmetrical six‐phase drive

Ariff

Dordevic

2019

J. eng.

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“…1 cos α cos 4α cos 5α cos 8α cos 9α 0 sin α sin 4α sin 5α sin 8α sin 9α 1 cos 5α cos 8α cos α cos 4α cos 9α 0 sin 5α sin 8α sin α sin 4α sin 9α 1 2 [17]. Recall that these low-order harmonics are mapped onto the 0 + − 0 − -plane.…”

Section: Rotational Transformation Of the 0 + − 0 − -Planeunclassified

“…Recall that these low-order harmonics are mapped onto the 0 + − 0 − -plane. Moreover, one can also relate the projection of v LEGk space vectors onto 0 + -axis to CMV [17]. Normally, in practise, CMV is not considered (i.e.…”

Section: Rotational Transformation Of the 0 + − 0 − -Planementioning

confidence: 99%

“…2 d . Although the coefficients of

\pm 1 / \sqrt{2}

0^{+}

and

0^{-}

axes in (4) are obviously due to the applied rotational transformation, the existence of these coefficients can also be analytically proven as a scaling factor for the amplitude of

v_{ph k}

low‐order harmonics of the order

3 k

()(, k = 1, 3, 5, \dots)

in terms of the amplitude of the corresponding

v_{LEG k}

low‐order harmonics [17]. Recall that these low‐order harmonics are mapped onto the

0^{+} - 0^{-}

‐plane.…”

Section: Space‐vector Algorithmmentioning

confidence: 99%

“…Moreover, one can also relate the projection of

v_{LEG k}

space vectors onto

0^{+}

‐axis to CMV [17]. Normally, in practise, CMV is not considered (i.e.…”

Section: Space‐vector Algorithmmentioning

confidence: 99%

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Space vector PWM algorithm for a three‐level asymmetrical six‐phase motor drive

Ariff

Dordevic²,

Jones³

2019

IET Electric Power Applications

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A space vector pulse-width modulation (SVPWM) algorithm for a three-level asymmetrical six-phase drive based on vector space decomposition (VSD) approach is presented in this paper. A modification in zero plane of the transformation matrix is proposed in order to meet the requirement that the realisation of sinusoidal output phase voltages can be obtained through the chosen output leg voltage space vectors. Furthermore, a method of choosing the switching sequences based on all possible one-level transitions of the leg voltages, i.e. a permutation method, is introduced. The algorithm is then validated experimentally and obtained results show that the developed method successfully achieves the desired fundamental phase voltage, although low order harmonics are present due to uncompensated inverter dead time. Last but not least, the performance of the proposed SVPWM algorithm is compared to several carrier-based PWM algorithms including in-phase disposition with 'double min-max injection' (PD-DI). This is a littleknown type of injection, which is verified to obtain identical performance as the presented multilevel algorithm.

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