The building system and the mathematical model of axial air-gap three-phased asynchronous motor

2006 ◽  
Author(s):  
N. Galan ◽  
A. Mammadov
Keyword(s):  
Mathematical Model ◽  
Asynchronous Motor ◽  
Air Gap ◽  
Building System ◽  
The Mathematical Model

Modelling and Realisation of a Three-Level PWM Inverter Using a DSP Controller to Feed an Asynchronous Machine

2015 ◽  
pp. 687-718
Author(s):  
Denoun Hakim ◽  
Benyahia Nabil ◽  
Zaouia Mustapha ◽  
Benamrouche Nacereddine ◽  
Salah Haddad ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Output Voltage ◽  
Asynchronous Motor ◽  
Signal Spectrum ◽  
Pwm Inverter ◽  
Multilevel Inverters ◽  
Simulation Results ◽  
And Control ◽  
Dsp Controller ◽  
The Mathematical Model

Multilevel inverters have seen an increasing popularity in the last few years for medium- and high-voltage applications. The most popular has been the three-level neutral clamped inverter. Multilevel inverters synthesize output voltage from more than two voltage levels. Thus, the output signal spectrum is significantly improved in comparison with the classical two-level converters. This chapter discusses modelling and control of a Neutral Point Clamped (NPC) inverter which operates with the PWM switching pattern using a DSP. The mathematical model of the NPC inverter is carried out using conversion and connection functions for an easier understanding of the system operation. Simulation results using MATLAB program are reported, and it is shown that the performances obtained for driving an asynchronous motor using this inverter are very promising. Finally, analysis of the theoretical and the experimental results is carried out in order to validate the effectiveness of the proposed control solution.

Study on the Air Damping of the Movable Armature

2013 ◽  
Vol 562-565 ◽  
pp. 1397-1401
Author(s):  
Ben Dong Liu ◽  
Jia Hui Yang ◽  
Yu De Wu
Keyword(s):  
Mathematical Model ◽  
Mean Free Path ◽  
Air Gap ◽  
Damping Coefficient ◽  
Mems Devices ◽  
Damping Force ◽  
Small Vibration ◽  
Damping Characteristics ◽  
Air Damping ◽  
The Mathematical Model

The distance of air gap is much larger than the mean free path of gas molecules for MEMS devices with small vibration. The nonlinear Reynolds equation can be transformed into linear Reynolds Eq. based on this condition and under certain assumptions. Then the mathematical model of damping of the movable armature is established with the linear Renault equation. The damping characteristics of the movable armature are studied based on the damping force mathematical model. The relation of damping coefficient and the dimensions of movable armature, the dimensions of air gap are analyzed. The research in this paper provides references for the design and analysis of the damping coefficient of the MEMS devices with small vibration.

Modeling of the Three-Phase Asynchronous Motor Based on MATLAB/Simulink

2013 ◽  
Vol 313-314 ◽  
pp. 1042-1045 ◽  
Author(s):  
Hai Jun Liu ◽  
Jin Long Wang ◽  
Fang Di Bao
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Asynchronous Motor ◽  
Quick Response ◽  
Matlab Simulink ◽  
Three Phase ◽  
Response Flexibility ◽  
Frame Transformation ◽  
The Mathematical Model

On the basis of the mathematical model of asynchronous motor combined with two-axis theory of revolving frame transformation simulating model was established under the environment of MATLAB/Simulink. At the same time, by using this simulation model, the analysis of the starting procedure of asynchronous motor was presented to demonstrate its correctness and such merits as quick response, flexibility, convenience, intuition and so on.

scholarly journals Transient processes of vibration machines with inertial electric drives

2020 ◽  
Vol 216 ◽  
pp. 01121
Author(s):  
Kamoliddin Alimkhodjaev ◽  
Murakam Mirsaidov ◽  
Malika Khalikova ◽  
Jasurbek Nizamov
Keyword(s):  
Mathematical Model ◽  
Induction Motor ◽  
Mechanical Characteristics ◽  
Mutual Influence ◽  
Asynchronous Motor ◽  
Experimental Studies ◽  
Transient Processes ◽  
Electric Drives ◽  
Dynamic Mechanical ◽  
The Mathematical Model

In order to conduct model experimental studies of the mutual influence of electromagnetic and mechanical transient processes of starting up inertial vibration drives with an asynchronous motor, its mathematical model is being developed. The analytical dependence of the dynamic mechanical characteristics of the vibrator at various values of the rotor acceleration is determined. The mathematical model uses the dynamic mechanical characteristics of an induction motor as a torque.

Experimentation and Mathematical Model Reseach on Air Gap Membrane Distillation

2012 ◽  
Vol 581-582 ◽  
pp. 89-93
Author(s):  
Ying Guan ◽  
Hong Jiang Cui
Keyword(s):  
Mathematical Model ◽  
Mass Transfer ◽  
Flow Rate ◽  
Membrane Distillation ◽  
Air Gap ◽  
Working Fluid ◽  
Fluid Temperature ◽  
Air Gap Membrane Distillation ◽  
Set Up ◽  
The Mathematical Model

Air gap membrane distillation (AGMD) experiments were done to reseach flux of membrane distillation at different working fluid temperature and mass flow rate. The driving power of distillation experiments is solar power. The experimental flux of membrane distillation reached 49kg/m2•h. The mathematical model of AGMD’ heat and mass transfer was set up. The biggest relative error is less than 9% between results of experiment and mathematical model calculation. The mathematical model can be used to forecast the distillation flux and the thermal efficiency.

scholarly journals Control with Sliding Mode of a Five-Phase Series-Connected Two-asynchronous Motor Drive

2018 ◽  
Vol 3 (1) ◽  
pp. 18
Author(s):  
Omar Zouaid ◽  
Lazhari Nezli
Keyword(s):  
Mathematical Model ◽  
Sliding Mode Control ◽  
Sliding Mode ◽  
Asynchronous Motor ◽  
Induction Machine ◽  
Mode Control ◽  
Asynchronous Machines ◽  
Park Transformation ◽  
The Mathematical Model ◽  
Two Machines

In this paper, we study sliding mode control of series-connected five-phase two asynchronous machines supplied with a three levels inverter. After presentation of multiphase machines, we worked out the mathematical model of five phase asynchronous machine supplied with voltage inverter. Application of Park transformation reduces considerably the mathematical model of machine. After, we applied vector control and sliding mode control to the five-phase induction machine. After that, we study a multi-machine system, which comport five-phase two asynchronous machines supplied with a single voltage inverter.In the last, we had the sliding mode control of series-connected five-phase two asynchronous machines. Simulations are presented to show the effectiveness of the control strategy. We observe that an appropriate transposition of phase’s order permits an independent control of two machines.

scholarly journals Frequency-current method of controlling an asynchronous three-phase motor

2020 ◽  
Vol 4 (394) ◽  
pp. 129-136
Author(s):  
Anatoly I. Korshunov ◽  
Khomyak A. Valentin ◽  
Irina D. Vasilyeva
Keyword(s):  
Mathematical Model ◽  
Asynchronous Motor ◽  
Current Method ◽  
Current Control ◽  
Computer Hardware ◽  
Motor Speed ◽  
Stator Current ◽  
Three Phase ◽  
The Mathematical Model ◽  
Frequency Current

Object and purpose of research. This paper discusses the method for controlling an asynchronous motor (AM), based on maintaining the optimal frequency of the rotor currents, which corresponds to the maximum electromagnetic moment of the rotor, and controlling its value by regulating the stator currents. Materials and methods. The mathematical model of asynchronous motor adopted in this study assumed the stator to be powered by a controlled three-phase AC generator. The functional diagram of motor speed control system and its digital model in the Matlab Simulink system have been developed. Main results. The constructed mathematical model of AM is correct under condition of smooth changes in set frequency and amplitude of stator currents governed by three-phase stator current control loop practically without error. Conclusion. The proposed method for controlling AM does not require complex calculations and is not too demanding in terms of computer hardware resources.

The Simulation Study of Asynchronous Motor Based on dq Coordinate System

2013 ◽  
Vol 441 ◽  
pp. 484-487
Author(s):  
Yi Ming Li ◽  
Jun Rong
Keyword(s):  
Mathematical Model ◽  
Theoretical Analysis ◽  
Coordinate System ◽  
Simulation Study ◽  
Control Method ◽  
Asynchronous Motor ◽  
Simulation Models ◽  
Solid Foundation ◽  
Simulation Results ◽  
The Mathematical Model

With the improvement of modem science and technology, asynchronous motor plays more and more important role in modem industrial life, and asynchronous motor has the broadest application and requirement in all kind of motors. The paper firstly builds the mathematical model of asynchronous motor in dq coordinate system, then establishes the simulation models of asynchronous motor based on Matlab/Simulink. The last the paper gives the simulation results and analyzes the simulation results. The results prove that the theoretical analysis of asynchronous motor in dq coordinate system is correct completely, and it lays a solid foundation for the study of control method for asynchronous motor.

DETERMINATION OF PERFORMANCE INDICATORS OF THE TRUCK KrAZ-6510TE

2020 ◽  
pp. 19-26
Author(s):  
Olexandr Pavlenko ◽  
Serhii Dun ◽  
Maksym Skliar
Keyword(s):  
Mathematical Model ◽  
Surface Friction ◽  
Building Structures ◽  
Maximum Torque ◽  
Military Equipment ◽  
Military Vehicles ◽  
Force Magnitude ◽  
Vehicle Mobility ◽  
The Mathematical Model

In any economy there is a need for the bulky goods transportation which cannot be divided into smaller parts. Such cargoes include building structures, elements of industrial equipment, tracked or wheeled construction and agricultural machinery, heavy armored military vehicles. In any case, tractor-semitrailer should provide fast delivery of goods with minimal fuel consumption. In order to guarantee the goods delivery, tractor-semitrailers must be able to overcome the existing roads broken grade and be capable to tow a semi-trailer in off-road conditions. These properties are especially important for military equipment transportation. The important factor that determines a tractor-semitrailer mobility is its gradeability. The purpose of this work is to improve a tractor-semitrailer mobility with tractor units manufactured at PJSC “AutoKrAZ” by increasing the tractor-semitrailer gradeability. The customer requirements for a new tractor are determined by the maximizing the grade to 18°. The analysis of the characteristics of modern tractor-semitrailers for heavy haulage has shown that the highest rate of this grade is 16.7°. The factors determining the limiting gradeability value were analyzed, based on the tractor-semitrailer with a KrAZ-6510TE tractor and a semi-trailer with a full weight of 80 t. It has been developed a mathematical model to investigate the tractor and semi-trailer axles vertical reactions distribution on the tractor-semitrailer friction performances. The mathematical model has allowed to calculate the gradeability value that the tractor-semitrailer can overcome in case of wheels and road surface friction value and the tractive force magnitude from the engine. The mathematical model adequacy was confirmed by comparing the calculations results with the data of factory tests. The analysis showed that on a dry road the KrAZ-6510TE tractor with a 80 t gross weight semitrailer is capable to climb a gradient of 14,35 ° with its coupling mass full use condition. The engine's maximum torque allows the tractor-semitrailer to overcome a gradient of 10.45° It has been determined the ways to improve the design of the KrAZ-6510TE tractor to increase its gradeability. Keywords: tractor, tractor-semitrailer vehicle mobility, tractor-semitrailer vehicle gradeability.

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