Compared with three-phase motor drive system, multiphase motor system has obvious advantages in high power, high reliability and low DC voltage power supply application. However, as a new technology, there are still many problems to be studied and discussed in theory and practice.
In this paper, the modeling of multiphase motor and the control technology of non-full-phase operation are studied, and the simulation analysis of six-phase induction motor is carried out.
Firstly, the mathematical model and harmonic analysis of multiphase induction motor are analyzed, and the temporal and spatial harmonics of multiphase induction motor under the condition of inverter power supply are analyzed. The simulation model of six-phase induction motor in static coordinate system is established, the concrete steps of Matlab/Simulink implementation are given, and the characteristics of six-phase induction motor are analyzed and studied. The effects of phase current voltage, stator flux linkage and space vector of multiphase motor and their effects on harmonics are analyzed.
In this paper, the dynamic mathematical model of multiphase motor running without phase is also established, and the six-phase motor running without phase is simulated. The changes of phase current voltage, stator flux linkage, speed, torque and load capacity are studied when the phase is missing.
The six-phase induction motor model and six-phase open-phase motor model are built by using Matlab/Simulink, and the related experiments and analysis are carried out. In order to have a certain understanding of the operation of multiphase induction motor, there is a rational understanding of the lack of phase of multiphase induction motor.
Through the simulation of six-phase motor and lack of phase, we can skillfully run the functions of Matlab/Simulink, laying a solid foundation for future study and research.
abstract
catalogue
abstract
I
abstract
two
1
foreword
1
1. 1
introduce
1
1.2
Establishment of mathematical model of multiphase motor
1
1.3
Modeling and Simulation of Six-phase Induction Motor
2
1.4
Establishment and analysis of six-phase motor non-full-phase simulation
2
1.5
Development status of research on speed regulation system of multiphase induction motor
2
1.6
The research background of this topic and the main work of this paper.
four
2.
Mathematical model of multiphase induction motor
six
2. 1
Mathematical model of natural multi-phase induction motor
six
2.2
Decoupling transformation of vector space of multiphase induction motor
eight
2.3
Summary of this chapter
eight
three
Simulation software (MATLAB
/Simulink) is introduced.
10
3. 1
Overview of MATLAB
10
3.2
The Historical Background of MATLAB's Generation
10
3.3
Language characteristics of MATLAB
1 1
3.4
Introduction to Simulink
12
4.
Modeling and Simulation of Six-phase Induction Motor
14
4. 1
Winding structure of six-phase induction motor
14
4.2
Mathematical model of six-phase induction motor
15
4.3
Simulation model of six-phase induction motor
18
4.4
Results and analysis
22
five
Modeling and Simulation of Six-phase Induction Motor with Lack of Phase
30
5. 1
order
30
5.2
Dynamic mathematical model of multiphase induction motor running without phase.
30
5.3 Dynamic mathematical model of six-phase induction motor without phase
3 1
5.4 Modeling and Analysis of Asynchronous Motor
35
Section 5.5 of this chapter
38
six
Modeling and simulation of six-phase induction motor without two phases
39
6. 1
Dynamic mathematical model of six-phase induction motor running without phase.
39
6.2 Modeling and Analysis of Non-two-phase Orthogonal Induction Motor
40
Section 6.3 of this chapter
Forty-four
seven
Conclusion and prospect
45
7. 1 Full-text work summary
45
7.2
Future work prospect
45
Express gratitude/gratitude
46
refer to
47
1
foreword
1. 1
introduce
matlab
It has powerful matrix operation ability and simple drawing function. Simulink is a software package used in Matlab to model, simulate and analyze dynamic systems.
. Matlab/Simulink is an open editing environment, and users can develop their own models. The development methods include: ① combining the existing model, ② programming with S function module.
Mode ① The idea is clear and simple, but more modules need to be called. Mode 2 requires programming and some programming skills, but the expression is close to mathematical expression. Simulink
The simulation is interactive, the parameters of the model can be changed at will, and the results can be seen immediately after changing the parameters. Using Matlab/Simulink
The provided module constructs a motor model that can be used for simulation according to the existing motor mathematical model, and gives the simulation results to verify the correctness of the model.
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