Constant-Parameter $RL$-Branch Equivalent Circuit for Interfacing AC Machine Models in State-Variable-Based Simulation Packages

2012 ◽  
Vol 27 (3) ◽  
pp. 634-645 ◽  
Author(s):  
Mehrdad Chapariha ◽  
Liwei Wang ◽  
Juri Jatskevich ◽  
Hermann W. Dommel ◽  
Steven D. Pekarek
Keyword(s):  
Equivalent Circuit ◽  
Constant Parameter ◽  
State Variable

Saturable and Decoupled Constant-Parameter VBR Model for Six-Phase Synchronous Machines in State-Variable Simulation Programs

2019 ◽  
Vol 34 (4) ◽  
pp. 1868-1880 ◽  
Author(s):  
Navid Amiri ◽  
Seyyedmilad Ebrahimi ◽  
Juri Jatskevich ◽  
Hermann W. Dommel
Keyword(s):  
Synchronous Machines ◽  
Constant Parameter ◽  
State Variable

scholarly journals Estimators of induction motor electromechanical quantities built on the basis of a machine secondary multi-loop equivalent circuit

2014 ◽  
Vol 63 (2) ◽  
pp. 149-160 ◽  
Author(s):  
A. Kaplon ◽  
G. Utrata ◽  
J. Rolek
Keyword(s):  
Equivalent Circuit ◽  
Induction Motor ◽  
Skin Effect ◽  
Equivalent Circuits ◽  
Ac Machines ◽  
Ac Drives ◽  
State Variable ◽  
Construction Procedure ◽  
Solid Iron ◽  
Lumped Elements

Abstract Contemporary sensorless AC drives require the use of electromechanical quantities estimation. The skin effect occurring in AC machines with solid secondary or with solid secondary elements causes machines of this type to be represented by equivalent circuits containing distributed elements, which makes the analysis of machine electrodynamic states more complicated and hinders the construction of relatively simple and effective estimators of electromechanical quantities. The variability of rotor parameters is modelled, with a good approximation, by the machine secondary multi-loop equivalent circuit with lumped elements. In this paper the construction procedure of electromechanical state variable estimators basing on this type of equivalent circuit will be presented. The simulation investigations of the created electromechanical quantities estimators, performed for the selected states of solid iron rotor AC machine operation will be shown as well.

Equivalent circuit for a GaAs CCD

1993 ◽  
Vol 140 (6) ◽  
pp. 377
Author(s):  
S. Pennathur ◽  
H.H.L. Kwok
Keyword(s):  
Equivalent Circuit

Adaptive identification methods of nonlinear random electrical signal

2020 ◽  
Vol 64 (1-4) ◽  
pp. 431-438
Author(s):  
Jian Liu ◽  
Lihui Wang ◽  
Zhengqi Tian
Keyword(s):  
Wavelet Transform ◽  
Electric Vehicle ◽  
Signal To Noise Ratio ◽  
Sudden Change ◽  
Electrical Signal ◽  
Signal Recognition ◽  
State Variable ◽  
Signal Characteristics ◽  
The Matrix ◽  
Kalman Filter Algorithm

The nonlinearity of the electric vehicle DC charging equipment and the complexity of the charging environment lead to the complex and changeable DC charging signal of the electric vehicle. It is urgent to study the distortion signal recognition method suitable for the electric vehicle DC charging. Focusing on the characteristics of fundamental and ripple in DC charging signal, the Kalman filter algorithm is used to establish the matrix model, and the state variable method is introduced into the filter algorithm to track the parameter state, and the amplitude and phase of the fundamental waves and each secondary ripple are identified; In view of the time-varying characteristics of the unsteady and abrupt signal in the DC charging signal, the stratification and threshold parameters of the wavelet transform are corrected, and a multi-resolution method is established to identify and separate the unsteady and abrupt signals. Identification method of DC charging distortion signal of electric vehicle based on Kalman/modified wavelet transform is used to decompose and identify the signal characteristics of the whole charging process. Experiment results demonstrate that the algorithm can accurately identify ripple, sudden change and unsteady wave during charging. It has higher signal to noise ratio and lower mean root mean square error.

Linear Equivalent Circuit and Current Sources Model Including Separation Resistances in the Ground Connection for Multiple Power-Supply Pin LSI

2010 ◽  
Vol 130 (11) ◽  
pp. 1897-1906
Author(s):  
Yoshiyuki Saito ◽  
Masakatsu Yasuhara ◽  
Yuichi Mabuchi ◽  
Tohlu Matsushima ◽  
Takashi Hisakado ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Power Supply ◽  
Multiple Power
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