scholarly journals Electrical equivalent circuit for modelling permanent magnet synchronous motors

2021 ◽  
Vol 72 (3) ◽  
pp. 176-183
Author(s):  
Esra Kandemir Beser
Keyword(s):  
Permanent Magnet ◽  
Equivalent Circuit ◽  
Circuit Simulation ◽  
Electrical Circuit ◽  
Simulation Program ◽  
Mechanical Parameters ◽  
Circuit Element ◽  
Electrical Equivalent Circuit ◽  
Mechanical Part ◽  
Simulation Results

Abstract In permanent magnet synchronous motor (PMSM) models, only the stator part is given as an electrical circuit and mechanical equations are used for modelling the mechanical part of the machine. In this study, electrical equivalents of mechanical equations are also obtained and mechanical parameters of a PMSM are expressed as an electrical circuit element. In this way, an exact electrical equivalent circuit is proposed in which both the stator and the mechanical part can be modelled as an electrical circuit for the PMSMs dynamic model. Although PMSM model includes mechanical parameters and variables, the complete model is expressed only in electrical elements and variables. The proposed PMSM circuit was simulated for different load torques in the circuit simulation program. Simulation results show that the proposed circuit operates like a PMSM. Simulation results were verified by another method in the form of solution of the differential equations that constitute the mathematical model of PMSM. Due to the proposed circuit that enables the conversion of mechanical parameters into electrical parameters, PMSM can be modelled and simulated as an electrical circuit with completely electrical elements in a circuit simulation program.

Modelling and Simulation of a Lead Acid Battery for Traction Applications

2016 ◽  
Vol 8 (1) ◽  
Author(s):  
D. Elangovan ◽  
G. Arunkumar ◽  
H.M. Tania ◽  
J.K Patra
Keyword(s):  
Equivalent Circuit ◽  
State Of Charge ◽  
Lead Acid Battery ◽  
Cell Temperature ◽  
Third Order ◽  
Electrical Equivalent Circuit ◽  
Battery Model ◽  
Terminal Voltage ◽  
Simulation Results ◽  
Lead Acid

In this paper, modeling of a lead acid battery was done by electrical equivalent circuit approach. Model based equivalent circuit approach was used to find the state of charge, terminal voltage, cell temperature and life of the battery at various temperatures. Based on complexity and accuracy, Thevinin’s third order equivalent battery model was simulated using MATLAB Simulink software. The simulation results were validated with the experimental state of charge and terminal voltage values.

MODELING AND SIMULATION OF CONVERTER SYSTEMS PART II: SIMULATION PACKAGE TCAD

1995 ◽  
Vol 05 (04) ◽  
pp. 669-697 ◽  
Author(s):  
ROMUALD SZCZESNY ◽  
MIECZYSLAW RONKOWSKI
Keyword(s):  
Circuit Simulation ◽  
Critical Evaluation ◽  
General Purpose ◽  
Electrical Circuit ◽  
Simulation Program ◽  
Voltage Source ◽  
Engineering Practice ◽  
Pwm Inverter ◽  
Operation Conditions ◽  
Simulation Package

The methods, models and techniques — presented in the companion paper — have been used as a basis for the evaluation of popular general-purpose electrical circuit simulation programs, in particular, their applicability in the analysis of power electronic circuits. As a result of this critical evaluation, the general requirements for the simulation program adequate for converter systems studies and design have been formulated. On this basis the algorithm of TCAD — a general-purpose converter system simulation program — has been elaborated. In presentation of the TCAD program three parties have been distinguished: the first one emphasizes the applications of modern simulation methods for converter systems, the second describes briefly the features of the main modules of the TCAD package, and the third presents some simulation examples of practical converter systems. Three simulation examples are presented: two resonant converters and an induction motor drive fed by a full-bridge voltage source PWM inverter at normal and fault operation conditions. A good agreement between simulation and experimental results has proved that this simulation package is a power tool for research, teaching and engineering practice.

scholarly journals Modelling of Supercapacitors Based on Simplified Equivalent Circuit

2021 ◽  
Vol 6 (1) ◽  
pp. 31-39
Author(s):  
Mustafa Şahin ◽  
Keyword(s):  
Energy Storage ◽  
Equivalent Circuit ◽  
Electrical Circuit ◽  
Circuit Model ◽  
Model Parameters ◽  
Equivalent Series Resistance ◽  
Energy Storage Devices ◽  
Proposed Model ◽  
Electrical Circuit Model ◽  
Simulation Results

The need for energy storage devices especially in renewable energy applications has increased the use of supercapacitors. Accordingly, several supercapacitor models have been proposed in previous researches. Nevertheless, most of them require an intensive test to obtain the model parameters. These may not be suitable for an initial simulation study, where a simple model based on the datasheet is required to evaluate the system performance before building the hardware prototype. A simplified electrical circuit model for a supercapacitor (SC) based on the voltage-current equation is proposed in this paper to address this issue. This model doesn’t need an intensive test for accuracy. The structural simplicity and decent modelling accuracy make the equivalent electrical circuit model very suitable for power electronic applications and real-time energy management simulations. The parameters of the proposed model can be obtained from the datasheets value with a minimum test requirement. The experimental method to provide the parameters of the supercapacitor equivalent circuit is described. Based on the proposed method, the supercapacitor model is built in Matlab/Simulink, and the characteristics of equivalent series resistance (ESR) measurement and cycle life are compared with datasheets. The simulation results have verified that the proposed model can be applied to simulate the behaviour of the supercapacitor in most energy and power applications for a short time of energy storage. A supercapacitor test circuit is given to test the charge and discharge of supercapacitor modules. The experimental results are suitable for simulation results.

scholarly journals A nonlinear equivalent circuit model for flux density calculation of a permanent magnet linear synchronous motor

2015 ◽  
Vol 12 (3) ◽  
pp. 359-373
Author(s):  
Reza Ghanaee ◽  
Ahmad Darabi ◽  
Arash Kioumarsi ◽  
Mohammad Baghayipour ◽  
Mohammad Morshed
Keyword(s):  
Permanent Magnet ◽  
Equivalent Circuit ◽  
Analytical Method ◽  
Equivalent Circuit Model ◽  
Synchronous Motor ◽  
Circuit Model ◽  
Magnetic Equivalent Circuit ◽  
Linear Synchronous Motor ◽  
Proposed Model ◽  
Simulation Results

In this paper, a nonlinear magnetic equivalent circuit is presented as an analytical solution method for modeling of a permanent magnet linear synchronous motor (PMLSM). The accuracy of the proposed model is verified via comparing its simulation results with those obtained by two other methods. These two are the Maxwell?s Equations based analytical method and the wellknown finite elements method (FEM). Saturation and any saliency e.g. slotting effects can be considered properly by both nonlinear magnetic equivalent circuit and FEM, where it cannot be taken into account easily by the Maxwell?s Equations based analytical approach. Accordingly, as the simulation results presented in this paper confirm, the proposed nonlinear magnetic equivalent circuit is compatible with FEM regarding the accuracy while it requires very shorter execution time. Therefore, the magnetic equivalent circuit model of the present paper can be considered as a preferable substitute for the time consuming FEM and approximated analytical method built on Maxwell?s Equations in particular when required to be applied for a design optimization problem.

An Experimental Study on Compact Equivalent Circuit Modeling of SiC Schottky Barrier Didoes

2013 ◽  
Vol 740-742 ◽  
pp. 1093-1097
Author(s):  
Makiko Hirano ◽  
Tsuyoshi Funaki
Keyword(s):  
Schottky Barrier ◽  
Equivalent Circuit ◽  
Circuit Simulation ◽  
Power Conversion ◽  
Power Device ◽  
Circuit Modeling ◽  
Device Model ◽  
Equivalent Circuit Modeling ◽  
Simulation Results ◽  
Switching Characteristics

Circuit simulation is of assistance to design and evaluate a power conversion circuit. A compact and accurate power device model is indispensable for obtaining appropriate circuit simulation results. This paper studies the compact equivalent circuit modeling of SiC Schottky Barrier diode (SiCSBD) and evaluates the developed model in turn-off switching operation. Two SiCSBDs having different specification are modeled and evaluated in this paper. The results show that the switching characteristics of SiCSBDs can be modeled with the equivalent circuit, whose configurations and parameters are identified from static I-V and C-V characteristics.

The Simulation of Distribution Parameter of the Three-Phase D-Dot Voltage Sensor

2014 ◽  
Vol 556-562 ◽  
pp. 2123-2127
Author(s):  
Li Yun Zhu ◽  
Jin Gang Wang ◽  
Yu Yi Fan ◽  
Yun Jie Bai
Keyword(s):  
Equivalent Circuit ◽  
Dynamic Range ◽  
Circuit Simulation ◽  
High Dynamic Range ◽  
Voltage Sensor ◽  
Input And Output ◽  
Three Phase ◽  
Voltage Signal ◽  
Electrode Capacitance ◽  
Simulation Results

As an electric coupling sensor, the D-dot voltage sensor can achieve non contact measurement of voltage. With the advantages of simple structure, a high dynamic range and measurement bandwidth, it can meet the needs of accurate measurement[1][2]. Thus it has great application prospects in voltage on-line monitoring, relay protection or other fields in the power system. This paper considered the operation of the three-phase lines, and established the D-dot voltage sensor simulation model in the simulation platform of Ansoft Maxwell 3D. With the simulation of the sensor working conditions, we can get the distributed parameters of the system under three-phase lines in operation, construct an equivalent circuit of measurement and analyze the simulation results to get a voltage signal of input and output. The simulation results show that, with the equivalent circuit simulation of the three-phase D-dot voltage sensor, if we improve electrode capacitance parameter, there will be a good linear relationship between the input and output.

Study and design of dual stator permanent magnet machine with spoke-type configurations using phase-group concentrated-coil windings

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1381-1389
Author(s):  
Dezhi Chen ◽  
Chengwu Diao ◽  
Zhiyu Feng ◽  
Shichong Zhang ◽  
Wenliang Zhao
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Low Cost ◽  
Dynamic Performance ◽  
Torque Ripple ◽  
Permanent Magnet Machine ◽  
Torque Density ◽  
Phase Group ◽  
High Torque ◽  
Simulation Results

In this paper, a novel dual-stator permanent magnet machine (DsPmSynM) with low cost and high torque density is designed. The winding part of the DsPmSynM adopts phase-group concentrated-coil windings, and the permanent magnets are arranged by spoke-type. Firstly, the winding structure reduces the amount of copper at the end of the winding. Secondly, the electromagnetic torque ripple of DsPmSynM is suppressed by reducing the cogging torque. Furthermore, the dynamic performance of DsPmSynM is studied. Finally, the experimental results are compared with the simulation results.

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