The Characteristics and Suppression of Common-Mode Current for Brushless Doubly Fed Generator System

Wang, Xingwei; Lin, Heyun; Yang, Hongjiu

doi:10.1109/temc.2019.2951381

Cited by 5 publications

(5 citation statements)

References 27 publications

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“…Predictive calculation of these vectors is conducted in the current optimal control layer. The evaluation function is shown in Formula (12).…”

Section: Current Tracking Errormentioning

confidence: 99%

“…The predicted current values ip d(k + 2) and ip q(k + 2) at the time k + 2 are calculated with i d ' (k + 2) and i q ' (k + 2) as the actual values. The results are inserted into Formula (12). The optimal vector or the optimal vector combination is selected through the action error comparison between the single-vector strategy and the improved two-stage strategy.…”

Section: Dwell Time Calculationmentioning

confidence: 99%

“…(5) Substitute the predicted current values into the evaluation function as shown in Formula (12) and save the smallest action error g2.…”

Section: Improved Two-stage Finite-control-set Model Predictive Contr...mentioning

confidence: 99%

“…This modulation technique aims to minimize voltage fluctuations across the parasitic capacitance during inverter mode transitions, thereby reducing common-mode currents. In order to reduce the common-mode voltage, in [12], the common-mode current path of the BDFG system is analyzed. At the same time, the common-mode voltage characteristics in Path 3 of the system are analyzed.…”

Section: Introductionmentioning

confidence: 99%

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Non-Weighted Two-Stage Model Predictive Control Strategy Based on Three-Level NPC Inverter

Wang,

Li,

Wang

2024

Energies

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This paper investigates the asynchronous motors driven by a Three-Level Neutral-Point-Clamped Voltage Source Inverter (3L-NPC-VSI) and aims to achieve control without weight factors and reduce torque ripple. It puts forward a non-weighted two-stage Finite-Control-Set Model Predictive Control (FCS-MPC) strategy. First, a hierarchical optimization method is adopted to address the difficulty of setting weight factors in traditional FCS-MPC applications. The method offers stratified designs of three performance indices, voltage jump, common-mode voltage, and current tracking, obviating the need for weight factor setting and reducing the calculation load of predictions. Secondly, to further mitigate torque ripple, an optimal vector or vector combination is implemented at the current control layer by adhering to the principle of minimal current tracking error. During the selection of the optimal vector combination, the first vector of the combination is chosen to be the vector at the end of the present cycle. This ensures that there is at most one switch within each control period, reducing the switching losses of the two-stage FCS-MPC. Lastly, detailed simulation and experimental analyses are conducted to verify the feasibility and effectiveness of the proposed strategy.

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“…Predictive calculation of these vectors is conducted in the current optimal control layer. The evaluation function is shown in Formula (12).…”

Section: Current Tracking Errormentioning

confidence: 99%

Section: Dwell Time Calculationmentioning

confidence: 99%

“…(5) Substitute the predicted current values into the evaluation function as shown in Formula (12) and save the smallest action error g2.…”

Section: Improved Two-stage Finite-control-set Model Predictive Contr...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Non-Weighted Two-Stage Model Predictive Control Strategy Based on Three-Level NPC Inverter

Wang,

Li,

Wang

2024

Energies

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“…The leakage current can be suppressed by reducing the amplitude and frequency of the CMV or breaking the PV array from the grid on the DC side of the inverter system. In recent years, many approaches have been made to overcome the CMV and leakage current in transformerless PV inverters [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. The SVM control method is generally implemented to control the traditional threephase two-level H6 VSI.…”

Section: Introductionmentioning

confidence: 99%

Topology Review of Three-Phase Two-Level Transformerless Photovoltaic Inverters for Common-Mode Voltage Reduction

et al. 2022

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In grid-connected photovoltaic (PV) systems, a transformer is needed to achieve the galvanic isolation and voltage ratio transformations. Nevertheless, these traditional configurations of transformers increase the weight, size, and cost of the inverter while decreasing the efficiency and power density. The transformerless topologies have become a good solution. However, the problem is that commode-mode voltage and leakage current can occur via the stray capacitors between the PV array and the ground of the inverter. Various transformerless inverters have been introduced with different techniques, such as reducing the common-mode voltage or eliminating the leakage current. Furthermore, to introduce the development of transformerless PV inverters, especially in three-phase two-level inverter systems, this paper provides a comprehensive review of various common-mode voltage reduction three-phase two-level inverters.

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A review of multiphase energy conversion in wind power generation

Peng

Liu

Jiang

2021

Renewable and Sustainable Energy Reviews

159

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The Characteristics and Suppression of Common-Mode Current for Brushless Doubly Fed Generator System

Cited by 5 publications

References 27 publications

Non-Weighted Two-Stage Model Predictive Control Strategy Based on Three-Level NPC Inverter

Non-Weighted Two-Stage Model Predictive Control Strategy Based on Three-Level NPC Inverter

Topology Review of Three-Phase Two-Level Transformerless Photovoltaic Inverters for Common-Mode Voltage Reduction

A review of multiphase energy conversion in wind power generation

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