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A Three-phase Nine-level Fault Tolerant Asymmetrical Inverter
Arabian Journal for Science and Engineering, 2018The reliability in inverters has gained a vast importance for their enhanced economic operation of the system. This paper proposes a three-phase reliable nine-level inverter with fault ride through capability. The proposed inverter synthesizes nine levels in the output with two asymmetrical voltage sources configured at a ratio of 1:3 under healthy ...
Santosh Kumar Maddugari +4 more
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Three phase induction machines asymmetrical faults identification using bispectrum
IEEE Transactions on Energy Conversion, 1995Bispectrum analysis is introduced for three-phase induction machine faults identification and condition monitoring. Bispectrum analysis is capable of providing more information than power spectrum analysis. In the present investigation, machine vibration signals operating at different rotating speed and degree of unbalance are thoroughly analyzed. Very
T.W.S. Chow, null Gou Fei
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Analysis on IIDG's negative-sequence current upon asymmetric fault
2016 China International Conference on Electricity Distribution (CICED), 2016As a large number of distributed generations (DG) are connected to the distribution network, the fault current of the distribution network has been changed, and the reliable operation of relay protection in the distribution network has been influenced.
Hua Shao +5 more
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Grid forming fault ride-through capability under asymmetrical and symmetrical grid faults
IET Conference Proceedings, 2023N. A. Hidayatullah +3 more
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IEEE Transactions on Sustainable Energy
Existing low-voltage ride-through (LVRT) methods of virtual synchronous generators (VSGs) are facing the problem of inverter damage due to prolonged overcurrent caused by the delay in fault detection.
Rui Luo, Houlei Gao, F. Peng, Yifei Guo
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Existing low-voltage ride-through (LVRT) methods of virtual synchronous generators (VSGs) are facing the problem of inverter damage due to prolonged overcurrent caused by the delay in fault detection.
Rui Luo, Houlei Gao, F. Peng, Yifei Guo
semanticscholar +1 more source
Active Power Enhancement Control Strategy of Grid-Forming Inverters Under Asymmetrical Grid Faults
IEEE transactions on power electronicsDue to the simple implementation and good dynamic response, the current-limiting gain control strategy (CLGCS) is widely utilized to limit the overcurrent of grid-forming inverters under asymmetrical grid faults. However, it will curtail the transmission
Han Zhang, Rui Liu, Cheng Xue, Y. Li
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Diagnosability of system faults with propagation under asymmetric invalidation
Microprocessing and Microprogramming, 1988Abstract We proposed in [1] considering the influence of fault propagation on the diagnosability of an interconnected system. In addition to the parameter t of the number of faulty units, a parameter k was introduced of the number of components consisting of faulty units, so as to capture the effect of fault propagation.
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Cross-Forming Control and Fault Current Limiting for Grid-Forming Inverters
IEEE transactions on power electronicsThis article proposes a “cross-forming” control concept for grid-forming inverters operating against grid faults. Cross-forming refers to voltage angle forming and current magnitude forming.
Xiuqiang He +3 more
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