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Theory of impedance networks: the two-point impedance andLCresonances [PDF]
Journal of Physics A: Mathematical and General, 2006 We present a formulation of the determination of the impedance between any two nodes in an impedance network. An impedance network is described by its Laplacian matrix L which has generally complex matrix elements. We show that by solving the equation L u_a = lambda_a u_a^* with orthonormal vectors u_a, the effective impedance between nodes p and q of ...
Tzeng, W. J., Wu, F. Y.
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Review of Local Network Impedance Estimation Techniques [PDF]
IEEE Access, 2020 As a result of increasing variability of network impedance, interest in impedance estimation techniques is growing. This review contextualises local impedance estimation techniques by providing a historical prospective on the uses of these techniques ...
Mathieu Kervyn De Meerendre +5 more
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Application of Improved Droop Control Based on Grid Impedance in Photovoltaic Grid-Connected Power Generation system [PDF]
E3S Web of Conferences, 2021 When the power grid impedance mutates, the output power of the grid-connected photovoltaic power generation system controlled by drooping will become very unstable.
Hao Xu Hao, Fang Wang, Cheng Liang Zhi
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IEEE Access, 2022 This paper proposes a novel topology, named a single-phase active switched-capacitor embedded quasi-Z-source inverter (ASC-EqZSI), and two pulse-width modulation (PWM) methods, namely, PWM1 and PWM2 methods for the proposed ASC-EqZSI topology to improve ...
Anh-Tuan Huynh, Anh-Vu Ho, Tae-Won Chun
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Transformerless High Step-Up DC-DC Converter With Low Voltage Stress for Fuel Cells
IEEE Access, 2021 Conventional dc-dc boost converter has limited boost capacity, and its power device suffers high voltage stress. A novel hybrid Z-source dc-dc converter featured with high step-up capability and low device voltage stress is proposed in this article ...
Jiawei Zhao, Daolian Chen, Jiahui Jiang
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Improved Symmetric Switched-Inductor/Capacitor Quasi Z-Source Inverter with Ability Uplifted-Boost [PDF]
International Journal of Industrial Electronics, Control and Optimization, 2020 This paper proposes a topology of switched-inductor/capacitor quasi z-source inverter (SIC-qZSI), which based on the classic qZSI. This topology is symmetric and has a high boost factor in the low duty cycle and high modulation index.
Alireza Karbalaei, Mohammad Mardaneh
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IEEE Access, 2021 Conventional dc-dc Boost converter has limited boost capacity, and its power device suffers high voltage stress. A novel Z-source based dc-dc boost converter featured with high step-up capability and low device voltage stress is proposed in this paper ...
Jiawei Zhao, Daolian Chen
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Switched-Capacitor-Inductor Active-Switched Boost Inverters With High Boost Ability
IEEE Access, 2021 This paper proposes a novel topology, named the switched-capacitor-inductor active-switched boost inverter (SCL-ASBI), based on a switched boost inverter (SBI).
Anh-Tuan Huynh, Anh-Vu Ho, Tae-Won Chun
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Sequence component direction element based on power frequency variation [PDF]
E3S Web of Conferences, 2021 Unlike the relatively stable network structure of the transmission and distribution network, under the new distribution network, resulting in errors in the impedance tuning of the fault directional element, misjudgment of the fault directional element ...
Liangzhi Sun +4 more
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Magnetically Coupled Single-Phase AC-AC Converter With Reduced Number of Passive Components
IEEE Access, 2022 An AC-AC direct single-phase converter based on an impedance network is presented in this manuscript. It possesses all privileges of similar impedance source AC-AC converters such as buck-boost ability, maintaining or reversing the phase angle and ...
Soroush Esmaeili +5 more
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