Asymmetric Interleaving in Low-Voltage CMOS Power Management With Multiple Supply Rails

Schuck, Marcel; Ho, Aaron D.; Pilawa-Podgurski, Robert C. N.

doi:10.1109/tpel.2016.2530783

Cited by 9 publications

(2 citation statements)

References 20 publications

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“…As shown in Fig. 7, taking the phase angle of harmonic h mn i in cell i as the reference, the harmonic component h mn k in the cell k can be expressed in the "dq frame", of which the angular velocity is equal to mn: Combining (17) and ( 22), the harmonic hmn in the total output voltage of the N-cells CHB inverter can be expressed in "dq frame" as follows:…”

Section: B the Implement Of The Closed-loop Harmonic Suppression Schemementioning

confidence: 99%

“…For instance, the modified PS-PWM with proper shifting angles calculation for CHB inverters, only considering unbalanced dc voltages, has been proposed in [15], but it does not consider the variation in the modulation indices. This method is also extended to reduce the weighted total harmonic distortion (WTHD) of the cascaded multilevel STATCOM [16]- [17]. Yet, the differences of modulating indices applied in all H-bridge submodules are ignored.…”

Section: Introductionmentioning

confidence: 99%

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The Closed-Loop Sideband Harmonic Suppression for CHB Inverter With Unbalanced Operation

Jiao

Wang

et al. 2022

IEEE Trans. Power Electron.

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For N-cells cascaded H-bridge (CHB) inverters based on unipolar double frequency phase-shifted pulse-width modulation (PS-PWM), the harmonic spectrum of the output voltage is degraded and difficult to be suppressed with unbalanced conditions (different dc voltages and/or modulation indices). This article proposes a closed-loop harmonic suppression scheme based on the PS-PWM technique, and the scheme is implemented with the "dq frame" to adjust cleverly the displacement angles of the triangular carriers online. The proposed method can effectively restrain harmonic magnitudes without the limitation of cells number and does not require complicated trigonometric function calculations. This method is not only applicable for all the operational conditions, but also suitable for harmonic optimization of different demands. Moreover, the principle of the symmetrical sideband harmonic suppression is also revealed. The effectiveness of the proposed method is verified by a down-scale test platform of the single-phase CHB inverter. 1

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Section: B the Implement Of The Closed-loop Harmonic Suppression Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%