Dissertation > Excellent graduate degree dissertation topics show

Harmonic Current Suppression Method Based on Characteristic of Inductance Storing Energy

Author: WuGuangZheng
Tutor: HangNaiShan
School: Guangxi University
Course: Proceedings of the
Keywords: Harmonic Non-linear Load Inductance Harmonic Current Suppression Passive Filtering
CLC: TM711
Type: Master's thesis
Year: 2011
Downloads: 34
Quote: 0
Read: Download Dissertation

Abstract


With the development of power electronic technology, power electrical energy switching device has become the main harmonic source in power system. The existence of harmonic leads to poor power quality, influencing power system’s safe and economical operation, and harming the security of power consumers’ electrical equipment, and even affecting the development of national economy.The research has indicated that harmonic current produced by non-linear loads in today’s power system is very easy to exceed the allowed value of harmonic current. therefore, this article proposes a harmonic current suppression method which can correct current waveform by inductance.The non-linear loads using power electronic switch conversion technology have be proved with time-varying characteristic and power conversion mechanism. Based on that, this article obtains the mechanism of harmonic current suppression that uses the magnetic field energy of inductance to offset the power of nonlinear loads, by analyzing the transition process of non-linear loads. Further more, the principle is applied to the stator windings of AC motor, and a new method of passive filtering by the three-phase mutual coupling inductance is formed. According to the theoretical derivation and analysis, the harmonic current suppression device based on the structure of motor is designed, and the physical experiments have been carried out to verify it’s feasibility of harmonic current suppression.In the process of research, we find that the coupling between each phase of the harmonic current suppression device can effectively enhance the magnetic energy of each phase, so the device can better adapt to changes in non-linear load, and realize to the current waveform sinusoidal correction. Variety of conditions experimental results show that this harmonic current suppression device has constitute a energy transmission technology that provides distortion power to nonlinear loads by fundamental sine wave power, and has the current waveform correction function.In this paper, the harmonic isolation by magnetic energy is studied, and the current waveform sinusoidal correction without consuming the active power is realized. That is a passive filtering way of harmonic current suppression and is important for power system. The harmonic current suppression device is simple in structure, and easy to realize. It is easy extended to the HVDC project, frequency control device, and other fields. Therefore, the research ot this article has great scientific significance and the reference value of project application.

Related Dissertations

  1. Analysis of Flexspline Stress and Tooth Wear in Harmonic Gear Drive,TH132.43
  2. Research on the Control Scheme of Hybrid PWM Rectifier under Unbalanced Voltage,TM461
  3. Study of Three-Phase AC Chopper Surge and Its Harmonic Elimination Technology,TM423
  4. The Basic Research of Axial Flux Inductor Type High Temperature Superconducting Motor,TM37
  5. Development of Inductance Sensor Data Acquisition System Based on FPGA,TP274.2
  6. Research on Power Supply of Contactless Power Transfer System,TM46
  7. Feature Extraction Technologies Research and Implementation of 3D Models Based on Wavelet Transform,TP391.41
  8. Dynamic Response and Reliability Analysis of Bus Body,U463.82
  9. Study on the Harmonic Real-time Detection Method of Active Power Filter,TM935
  10. Study on the Control Strategy of the Active Power Filter for Harmonic Compensation,TM761.1
  11. Fuel cell vehicles with high-frequency inverter system harmonic analysis and suppression,TM464
  12. Large transformer eddy current loss and the body vibration calculation and analysis,TM41
  13. Influence & Study of Harmonic Wave in Power System to GTS’ Safe Operation,TM711
  14. The Influence of Refractive Index Modulation on Frequency-doubling of Ultrashort Pulses,O437
  15. PDE- based eight -order Bézier surface constructor,TP391.7
  16. Two Semi-supervised Dimensionality Reduction Methods for Tensor and Multiple View Data,TP181
  17. Robust Passive Control and Robust Passive Filtering for Linear Uncertain Neutral Delay Systems,TP13
  18. Yunnan public service system based on harmony theory,D630
  19. The Diagnose of Scleroderma by Use of Multiphoton Laser Scanning Microscopy,R593.25
  20. Design of the Angle Transducer for Dynamically Tuned Gyro,V241.5
  21. The New Functional Complexes Based on Tartaric Acid,O621.13

CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Theory and Analysis > Network analysis,power system analysis
© 2012 www.DissertationTopic.Net  Mobile