An Optimal Periodic Carrier Frequency PWM Scheme for Suppressing High-Frequency Vibrations of Permanent Magnet Synchronous Motors

Ji, Zhongkun; Cheng, Siwei; Li, Xinghong; Lv, Yajun; Wang, Dong

doi:10.1109/tpel.2023.3281743

Cited by 8 publications

(1 citation statement)

References 28 publications

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“…Additionally, Y. Huang utilizes a variable frequency density sawtooth carrier to achieve periodic PWM, thereby achieving spread-spectrum effects while reducing inverter switch frequencies [27]. Reference [28] presents an optimized periodic PWM scheme that minimizes motor vibration frequency response peaks by considering the motor s vibration frequency response function. Reference [29] details the impact of periodic PWM on the current harmonics of permanent magnet synchronous motors (PMSMs).…”

Section: Introductionmentioning

confidence: 99%

A Spread-Spectrum Modulation Scheme for a 3 × 6 Indirect Matrix Converter Based on a Current Ripple Model

Zhou,

Xue,

et al. 2024

Energies

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Focused on addressing harmonic suppression in multiphase indirect matrix converters (IMCs), this study explores spread-spectrum modulation technology through ripple analysis calculations. We introduce a current ripple spread-spectrum modulation (CR-SSM) method tailored for multiphase IMC systems. In this approach, a 3 × 6-phase IMC is modeled as a two-port network, and a small-signal model of the output side is established. The transfer function is utilized to analyze the two-port network in the complex frequency domain (s-plane). The time-domain expression of the output current ripple is derived in vector form. Subsequently, the distribution of the output ripple and locus are determined based on specified constraints. The carrier frequency is dynamically adjusted online according to the specified ripple locus. Compared to classical periodic PWM methods, this approach offers a broader range of frequency variations and achieves a more uniform output spectrum. Furthermore, CR-SSM optimizes system efficiency and enhances spread-spectrum modulation. Experimental results demonstrate that this method effectively enhances the quality of input and output waveforms in multiphase IMC systems.

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Section: Introductionmentioning

confidence: 99%

A Spread-Spectrum Modulation Scheme for a 3 × 6 Indirect Matrix Converter Based on a Current Ripple Model

Zhou,

Xue,

et al. 2024

Energies

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M3D‐DPWM strategy for three‐phase four‐leg inverter with higher harmonic suppression capability

Li,

Shen,

et al. 2024

IET Power Electronics

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Three‐phase four‐leg inverters are widely used in power systems due to their inherent ability to handle unbalanced loads. However, with conventional 3D space vector pulse width modulation (3D‐SVPWM), high harmonics of large amplitude exist in the output voltage around the switching frequency and its integer multiples leading to noise in the load motor and limiting the application range of the inverter system. The passband amplification of conventional sinusoidal filters and their cutoff frequency vary with the load, so it is particularly important to investigate the regulation strategy with harmonic suppression. In this study, an improved 3D discontinuous pulse width modulation (M3D‐DPWM) strategy is proposed based on 3D‐SVPWM. By reducing the conventional 3D‐SVPWM switching segments and changing the vector synthesis sequence of the last half switching cycle, the output phase voltage period is reduced to half of the original one, which achieves the purpose of suppressing the output voltage at the switching frequency and its odd multiple high harmonics without changing the fundamental characteristics and adding additional circuits. In contrast, the conventional 3D‐SVPWM switching frequency is increased to 20 kHz to achieve similar performance. Finally, the effectiveness of the proposed strategy is verified by simulation and experiment.

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An Optimization Method in the Random Switching Frequency SVPWM for the Sideband Harmonic Dispersion

Wen,

Cheng,

Gao

et al. 2024

IEEE J. Emerg. Sel. Topics Power Electron.

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An Optimal Periodic Carrier Frequency PWM Scheme for Suppressing High-Frequency Vibrations of Permanent Magnet Synchronous Motors

Cited by 8 publications

References 28 publications

A Spread-Spectrum Modulation Scheme for a 3 × 6 Indirect Matrix Converter Based on a Current Ripple Model

A Spread-Spectrum Modulation Scheme for a 3 × 6 Indirect Matrix Converter Based on a Current Ripple Model

M3D‐DPWM strategy for three‐phase four‐leg inverter with higher harmonic suppression capability

An Optimization Method in the Random Switching Frequency SVPWM for the Sideband Harmonic Dispersion

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