impedance estimation
A New High Frequency Grid Impedance Estimation Technique for the Frequency Range of 2 to150 kHz
... for impedance estimation in noisy systems, the energy of the injected signal must be sufficient for an accurate ...frequencies), estimation is not accurate ...
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Grid impedance estimation for islanding detection and adaptive control of converters
... online impedance estimation technique based on periodical variations of active and reactive power (PQ variations) of a grid connected single phase power ...grid impedance can be ...grid ...
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Grid Impedance Estimation Using Several Short-Term Low Power Signal Injections
... The impedance estimation is used in many power system applications such as power quality analysis of smart grids and grid connected renewable energy ...proposed impedance estimation technique ...
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An islanding detection method for multi DG systems based on high frequency impedance estimation
... of the inherent system voltage which is viewed as a noise component and the voltage response to the injected current. Because of a short injection duration (0.1ms) and a small data capturing window, the proposed method ...
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Observer based pulsed signal injection for grid impedance estimation in three phase systems
... the estimation of the grid impedance and the control of grid-tied converters by combining pulsed-signal injection and observer based ...grid impedance changes, the observer control signal will be ...
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Toward spatial impedance estimation for robotic systems
... each estimation led to convergence after ≈ 3 s, where the initial values of the covariance matrix P (related to the first guess of the online estimator) was kept ...
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Machine learning based impedance estimation in power system
... Different implementations of the passive methods are presented in the literature, e.g. extended Kalman filters [2], excitation of LCL filters[12], recursive least square [10], etc. In all the passive methods as the ...
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Stability assessment of power converter based AC systems by LTP theory: eigenvalue analysis and Harmonic Impedance estimation
... an impedance measurement technique based on current injections to practically evaluate the LTP Nyquist Criterion with a “black-box” approach, more oriented to practical ...
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A resonance mode piezoelectric device for measurement of respiratory mechanics
... the impedance estimation error. The impedance estimation error in the simulated COPD and child (with high tidal volume) subjects was higher than the healthy male sub- ject (Figure ...
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Joint Antenna Impedance and Channel Estimation in Multiple-input, Multiple-output Receivers.
... developed estimation techniques that learn in real-time the unknown antenna impedance using observations of training sequences in multiple- input, multiple-output (MIMO) ...antenna impedance has ...
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Estimation of distance and electric impedance of capacitive objects in the weakly electric fish Gnathonemus petersii
... the impedance, size, shape and distance of an object, image features are influenced by many parameters (von der Emde and Schwarz, ...distance estimation, however, is the relative slope of the amplitude ...
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Marine power distribution system fault location using a portable injection unit
... on impedance estimation [14]-[20] and based on traveling waves ...system impedance estimation have been developed for many ...traditional impedance models (ignoring the shunt ...
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... third impedance estimation with an improved leakage reactance calculation using the no-load startup power and current of the machine at the lowest voltage test ...
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Constrained robust estimation of magnetotelluric impedance functions based on a bounded-influence regression M-estimator and the Hilbert transform
... MT impedance estimation (Sutarno, ...corresponding impedance function can not be associated with a minimum phase ...MT impedance function can be considered to be a causal transfer ...reliable ...
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Efficient Generation of Power In Medium Voltage Direct Current Systems: Variable Speed Operation and Rectifier Considerations
... As the main focus of this research is on the development of the use of RPWMII for impedance estimation, a smaller amount of time has been spent on implementing the results of such measurements. Future work ...
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Intelligent impedance based fault location for zonal power systems
... These changes in power generation strategies require new, more advanced methods of power system protection [1, 2, 3]. An indication of the type and location of a fault can be very useful in determining what protective ...
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Teleimpedance control of unmanned aerial vehicles
... arm impedance estimation has been designed which uses the MTi inertial sensor from ...arm impedance approximation is validated through simulations with the programme ...
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A Miniaturized Bandpass Filter with Controllable Harmonic by Using Split Impedance Resonators
... parallel impedance formula, the lower-impedance sections of traditional stepped impedance resonator were transferred to numerous higher impedance sections by using the proposed Equations (6), ...
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Dynamic Analysis of TCSC on Distance Protection Relay & Its Mitigation
... In this case, MOV operates for decreasing the voltage across the capacitor. The MOV is fast enough to conduct and reset within a half-cycle. The MOV would not short out the capacitor as the circuit breaker would. This ...
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Impedance spectroscopy of changes in skin-electrode impedance induced by motion
... the impedance waveforms and the motion artifact signal, but could not draw a relationship to the motion pattern in the time or frequency ...skin-electrode impedance and surface biopotential in the absence ...
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