Dissertation > Excellent graduate degree dissertation topics show

The Research and Design on Three-Phase Voltage Source PWM Rectifier

Author: LiuXiang
Tutor: ZhangAiLing
School: Taiyuan University of Technology
Course: Power Electronics and Power Drives
Keywords: Rectifier Unbalanced grid Software PLL TMS320F2812 Simulation
CLC: TM461
Type: Master's thesis
Year: 2010
Downloads: 169
Quote: 2
Read: Download Dissertation

Abstract


Compared with diode controlled rectifier or phase control thyristor rectifier, PWM rectifier current network side symmetrical sinusoidal, unity power factor operation, the advantages of the energy can flow in both directions. Under two conditions of the grid balanced and Unbalanced three-phase Voltage PWM Rectifier software design and system experiments. This article through a three-phase software phase-locked loop access and synchronization phase grid voltage PI regulator output error angular frequency 2812 timer count value corresponding relationship between research, produce timer cycle interrupt, the interrupt routine plus a fixed angle, to achieve the purpose of the phase-locked. The experimental results show the feasibility of the method. By increasing the current limiting resistor and software programming to solve the problem of the PWM rectifier on the hardware, software start. On this basis, the grid voltage under equilibrium conditions, steady-state and dynamic performance experiments. The experimental results show that this design of the three-phase voltage source PWM rectifier AC side current symmetrical sinusoidal, unity power factor operation a constant DC voltage to follow a given value, as well as energy two-way flow of. Operating conditions of the power grid voltage unbalance depth study of three-phase PWM rectifier under unbalanced conditions being the three-phase PWM rectifiers, the negative sequence power relations, mathematical model of the three-phase voltage-type PWM rectifiers and grid voltage unbalance conditions control strategies. On this basis, the use of MATLAB simulation tool based on positive and negative sequence rotating coordinate system the double current control system simulation model. Simulation results show, one the suppression network side AC negative sequence current imbalance control strategy to improve the three-phase voltage-type PWM rectifier AC side current waveform, it basically symmetrical three-phase current. Second, basic elimination of the second harmonic of the three-phase voltage-type PWM rectifier DC voltage control strategy based on inhibition of DC side voltage harmonics. The completion of a three-phase Voltage PWM Rectifier experimental grid voltage unbalance conditions. Unbalanced voltage separation, for PWM Rectifier experimental grid voltage unbalance conditions laid the foundation. Positive sequence, negative sequence sets the synchronous rotating coordinate system independent control scheme better suppresses the DC side voltage harmonics, no static error control, and be able to better reduce the harmonic the second harmonic imbalance grid brought wave pollution, improve the tracking performance and robustness of the control system.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study of Interaction between Epoxy Molecules and Carbon Fiber Surface with Molecular Simulation,TB332
  3. Research on Mechanism Analysis and Modeling Simulation of Horizontal Well Tractor,P631.83
  4. Study on Springback of High-Strength Steel Stamping,TG386
  5. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  6. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  7. The Brake Performance of Hydraulic Retarder and Simualtion Research on Its Application for Aircraft Arrestment,TH137.331
  8. Satellite Attitude Determination Based on Gyro and Star Sensor,V448.2
  9. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  10. Research on Orbital Control Method for Space Rendezvous and Docking,V526
  11. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  12. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  13. Single Neuron PID Control for Electro-Hydraulic Servo Unit of Ship Rudder,U666.152
  14. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  15. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  16. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  17. Numerical Simulation of Biomass Direct Reburning,TK16
  18. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  19. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  20. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  21. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23

CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter > Rectifier
© 2012 www.DissertationTopic.Net  Mobile