Switching Loss Optimization for a Pulsewidth Modulation Strategy With Reduced CMV and Improved Output Harmonic Distortion for a Three-Level NPC Converter

Pham, Khoa Dang; Nguyen, Nho-Van

doi:10.1109/tpel.2022.3175898

Cited by 7 publications

(6 citation statements)

References 26 publications

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“…As can be observed in Fig. 14 and 15, the frequency spectra of CMV of HRCMV-CMC, RCMV1-SLO, and POD-SPWM confirms that the third-order CMV components of fundamental frequency (f = 150Hz) and its multiples are virtually zero, thus zero average CMV being achieved [17][32] [33].…”

Section: A CMV Analysismentioning

confidence: 76%

“…In order to avoid the inferior output harmonic distortion and the Common-mode voltage (CMV) spikes while still being able to mitigate the adverse effects of Common-mode voltage (CMV), another group of pulse-width modulation (PWM) schemes featuring reduced Common-mode voltage (CMV) magnitudes and zero average Common-mode voltage (CMV) has been utilized [31]- [33]. One notable pulse-width modulation (PWM) scheme in this category is the conventional Phase Opposition Disposition Sinusoidal PWM (POD-SPWM) [31].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a novel modulation scheme, namely RCMV1, which possesses reduced CMV magnitudes, zero average CMV, and even lower output harmonic distortion than POD-SPWM, has been proposed in [32]. Moreover, an improved version of RCMV1, namely RCMV1-SLO, has been introduced to reduce the extra switchings, thereby optimizing switching loss while inheriting all the positive features of RCMV1 [33].…”

Section: Introductionmentioning

confidence: 99%

“…The high-frequency Common-mode voltage (CMV) can be mitigated by reducing the CMV variations. As shall be demonstrated in the later section, the number of variations in Common-mode voltage (CMV) values is 6 times per carrier period in RCMV1 [32], and RCMV1-SLO [33], thereby contributing to bearing current and leakage current. With the increase in switching frequency enabled by the wide-bandgap switching devices [34]- [36], highfrequency Common-mode voltage (CMV) further aggravates the Common-mode voltage (CMV)-related issues.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Hybrid Pulse-Width Modulation Strategy With Reduced High-Frequency Common-Mode Voltage to Lower RMS Motor Leakage Current for a Three-Level Neutral Point Clamped Converter

Pham,

Doi,

Nguyen

2023

IEEE Access

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Due to the capacitive nature of Common-mode impedance, high-frequency Common-mode voltage due to high switching frequency leads to an increase in RMS leakage current, which, in turn, causes higher power loss, Electromagnetic Interferences, and deteriorated harmonic distortion in the three-level Neutral-Point-Clamped converter. Recently-proposed pulse-width modulation type 1 with reduced Commonmode-voltage magnitudes, zero average Common-mode-voltage, and improved harmonic distortion has been presented for the three-level Neutral-Point-Clamped converter. However, the high-frequency Common-mode voltage could be further mitigated by reducing the number of CMV variations. Therefore, this article presents a hybrid pulse-width modulation scheme featuring reduced Common-mode-voltage magnitudes and variations, zero average Common-mode-voltage, and improved harmonic distortion. The Common-modevoltage variation reduction is realized by re-arranging the order of the switching states in the recentlyproposed scheme in a carrier period. The resulting modified sequences type 1 suffer simultaneous switchings between two phase-legs, hence leading to Common-mode-voltage spike due to deadtime. Hence, another type of modified sequences (type 2) is utilized with the modified sequences type 1 and the information of threephase currents, hence the term "hybrid". Results under Volt-per-Hertz-2.2KW-rated induction motor with different loading conditions in the Three-Level Neutral-Point-Clamped Converters indicate that at rated frequency of 50Hz, the proposed scheme leads to a noticeable decrease in RMS leakage current while producing similar-to-better harmonic distortion at the expense of slight reduction of the efficiency of a converter as opposed to the recently-proposed Reduced-Common-mode-voltage Pulse-width modulation type 1 with improved switching loss and Phase-Opposition-Disposition-Sinusoidal Pulse-width modulation.

show abstract

Section: A CMV Analysismentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hybrid Pulse-Width Modulation Strategy With Reduced High-Frequency Common-Mode Voltage to Lower RMS Motor Leakage Current for a Three-Level Neutral Point Clamped Converter

Pham,

Doi,

Nguyen

2023

IEEE Access

Self Cite

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show abstract

“…Power converters have been widely used in applications of distributed energy resources, motor drives etc. It is always important to investigate their modulations for low current harmonics and high efficiencies [1][2][3]. Recently, with the adoption of high-switching-frequency wide-bandgap devices (e.g.…”

Section: Introductionmentioning

confidence: 99%

A double‐modulation‐wave discontinuous pulse‐width‐modulation for dead‐time‐effect elimination and switching‐loss reduction in two‐level power converters

Yan

Zhou

2023

IET Power Electronics

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High current qualities and high efficiencies are always two important characteristics for power converters. However, it is challenging to achieve the two targets simultaneously. In this paper, the dead‐time‐effect elimination pulse‐width‐modulation (PWM) for improving current qualities and the discontinuous PWM (DPWM) for reducing switching losses are combined, proposing a double‐modulation‐wave DPWM. An additional modulation wave is added, whose amplitude is adjusted according to the current polarity. By utilizing the added drive pulses in the current freewheeling stage, the proposed double‐modulation‐wave DPWM successfully reduces the dependence on the current polarities. The overmodulation phenomenon brought by the added modulation wave is analysed, which is proved to be negligible for achieving the maximum modulation index of 1.15. Finally, the effectiveness of the proposed double‐modulation‐wave DPWM is experimentally verified at a switching frequency of 40 kHz.

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Predictive Control of Three-Level NPC Inverter-Fed IPMSM Drive Using g-h Coordinates for Common Mode Voltage Reduction

Ihsan,

Yang,

Atif

et al. 2024

2024 IEEE 10th International Power Electronics and Motion Control Conference (IPEMC2024-ECCE Asia)

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Switching Loss Optimization for a Pulsewidth Modulation Strategy With Reduced CMV and Improved Output Harmonic Distortion for a Three-Level NPC Converter

Cited by 7 publications

References 26 publications

Hybrid Pulse-Width Modulation Strategy With Reduced High-Frequency Common-Mode Voltage to Lower RMS Motor Leakage Current for a Three-Level Neutral Point Clamped Converter

Hybrid Pulse-Width Modulation Strategy With Reduced High-Frequency Common-Mode Voltage to Lower RMS Motor Leakage Current for a Three-Level Neutral Point Clamped Converter

A double‐modulation‐wave discontinuous pulse‐width‐modulation for dead‐time‐effect elimination and switching‐loss reduction in two‐level power converters

Predictive Control of Three-Level NPC Inverter-Fed IPMSM Drive Using g-h Coordinates for Common Mode Voltage Reduction

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