Asymmetric Digital Dual-Edge Modulator for Dynamic Performance Improvement of Multiloop-Controlled VSI

Comacchio, Andrea; Bonanno, Giovanni; Abedini, Hossein; Mattavelli, Paolo; Corradin, Michele

doi:10.1109/tie.2022.3187586

Cited by 6 publications

(17 citation statements)

References 22 publications

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“…Up to half of the switching frequency, the magnitude of G ADE-DPWM (s) is close to unity, and the phase of G ADE-DPWM (s) is close to zero, regardless of the SSOP. This result is consistent with the graphical analysis developed in [29]. The doublesampling ADE-DPWM does not introduce any phase delay up to the switching frequency, which is instead commonly observed in conventional DPWM modulators based on TTE carriers.…”

Section: Asymmetric Dual-edge Digital Pulse-width Modulatorsupporting

confidence: 90%

“…These three works are similar in terms of the strategy used and the final improvement of dynamic performance. The first digital PWM architecture based on the asymmetric dual-edge carrier is presented in [29]. The latter features the basic operation, the synchronization correction strategy, and an intuitive graphical-based approach for the small-signal analysis.…”

Section: Asymmetric Dual-edge Digital Pulse-width Modulatormentioning

confidence: 99%

“…Since, during transients, the ADE-DPWM operates at a variable switching frequency, a synchronism correction is required to keep the sampling instants at the proper position, i.e., to ensure center-pulse sampling. A suitable synchronization strategy can be obtained by modulating the upper and lower thresholds, as proposed in [29].…”

Section: Asymmetric Dual-edge Digital Pulse-width Modulatormentioning

confidence: 99%

“…The novel delay reductionbased method to improve the passivity properties of digitally controlled PEC is proposed in [27]. Instead of using stateof-the-art trailing-triangle edge (TTE) carrier-based DPWM [28], the recently proposed asymmetric dual-edge DPWM (ADE-DPWM) is considered [29], [30]. Since in its doublesampling implementation the ADE-DPWM features zero delay and almost unity magnitude up to half of the switching frequency, dissipative behavior of the PEC admittance is improved.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

High Frequency Passivity Properties of Grid-Connected Admittance With Double-Sampling Asymmetric Dual-Edge Modulator

Cvetanovic

Bonanno

Comacchio

et al. 2022

IEEE Open J. Power Electron.

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Small-signal stability and dynamic interactions among power electronic converters (PECs) and electrical grids are widely analyzed using the impedance-based approach. To reduce such interactions, a desirable feature of PECs is that their admittance exhibits dissipative behavior. Due to control delays, the PEC admittance usually exhibits non-dissipative zones around and above the crossover frequency of the inner control loop, possibly reducing the stability margins of the contemporary electrical grids. This paper proposes the double-sampling asymmetric dual-edge digital pulse-width modulator (ADE-DPWM) as an effective way to improve the passivity properties of the PEC admittance. Even in the digital implementation, the ADE-DPWM features zero delay and almost unity magnitude up to half of the switching frequency. Moreover, this paper examines the influence of ADE-DPWM on the PEC admittance even at higher frequencies, where destabilization of poorly damped grid resonances may be influenced by sampling and pulse-width modulation sidebands. Due to an operating point dependent ADE-DPWM small-signal model, the high-frequency passivity properties highly depend on the steady-state operating point. The analytical predictions are shown to be in excellent agreement with the experimental admittance measurements up to twice the switching frequency for all tested steady-state operating points.INDEX TERMS Admittance, asymmetric dual-edge digital pulse-width modulator (ADE-DPWM), passivity properties, power-electronic converters (PECs), sidebands.

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Section: Asymmetric Dual-edge Digital Pulse-width Modulatorsupporting

confidence: 90%

Section: Asymmetric Dual-edge Digital Pulse-width Modulatormentioning

confidence: 99%

Section: Asymmetric Dual-edge Digital Pulse-width Modulatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

High Frequency Passivity Properties of Grid-Connected Admittance With Double-Sampling Asymmetric Dual-Edge Modulator

Cvetanovic

Bonanno

Comacchio

et al. 2022

IEEE Open J. Power Electron.

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“…The fast dynamic response and improved steady state performance is highly essential for VSI [7], [8]. These issues are briefly addressed in the literature by designing an appropriate control scheme.…”

Section: Introductionmentioning

confidence: 99%

Analysis, design, and control of standalone PV based boost DC-AC converter

Nayak,

Kumar,

Sahu

et al. 2024

IJAPE

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This paper presents a new control scheme for a boost DC–AC converter which is used for solar power applications. The proposed DC-AC converter configuration can produce an AC voltage level across the output or load side greater than input DC voltage based on the operating duty cycle. Generally, the conventional DC-AC converter or voltage source inverter (VSI) generates AC voltage which is less than input DC voltage. Maintaining a constant voltage across the load with improved dynamic performance is challenging for anyone for the solar photovoltaic (PV) system. A dual-loop sliding mode control is proposed for the boost VSI to address the above issues. The proposed controller has robust in nature against the wide fluctuation in the plant or load parameters. The design, analysis and control of the boost DC-AC converter are briefly discussed in this paper. This topology can be broadly used in solar powered uninterruptible power supply (UPS) where boosting operation is essential for low voltage solar PV system. This topology eliminates the DC boosting power processing stage which leads an improved efficiency of the overall system. The MATLAB/Simulink results are presented to highlight the above issues.

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Improved Passivity of Grid-Connected Impedance using Asymmetric Dual-Edge Modulators

Abedini

Bonanno

Cvetanovic

et al. 2022

2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

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Asymmetric Digital Dual-Edge Modulator for Dynamic Performance Improvement of Multiloop-Controlled VSI

Cited by 6 publications

References 22 publications

High Frequency Passivity Properties of Grid-Connected Admittance With Double-Sampling Asymmetric Dual-Edge Modulator

High Frequency Passivity Properties of Grid-Connected Admittance With Double-Sampling Asymmetric Dual-Edge Modulator

Analysis, design, and control of standalone PV based boost DC-AC converter

Improved Passivity of Grid-Connected Impedance using Asymmetric Dual-Edge Modulators

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