scholarly journals Effect of Damper Winding and Stator Slot Skewing Structure on No-Load Voltage Waveform Distortion and Damper Bar Heat in Large Tubular Hydro Generator

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 22281-22291 ◽  
Author(s):  
Zhen-Nan Fan ◽  
Li Han ◽  
Yong Liao ◽  
Li-Dan Xie ◽  
Kun Wen ◽  
...  
Keyword(s):  
Voltage Waveform ◽  
Load Voltage ◽  
Waveform Distortion ◽  
Damper Winding

Optimization of No-Load Voltage Waveform in a Large Hydro-Generator by the Schemes which Shift the Damper Winding and Skew Stator Slots

2012 ◽  
Vol 614-615 ◽  
pp. 397-403
Author(s):  
Yong Gang Luo ◽  
Zhen Nan Fan
Keyword(s):  
Electromagnetic Field ◽  
Test Data ◽  
Coupling Model ◽  
Voltage Waveform ◽  
Load Voltage ◽  
Electric Network ◽  
Design Standard ◽  
Design Scheme ◽  
Calculation Results ◽  
Damper Winding

Improvement of no-load voltage waveform is a important problems for designing hydro-generators and ensuring operation reliability of the generators and electric network. The no-load voltage waveforms of a 335MW hydro-generator are optimized with the design scheme which shift damper winding and skew stator slots, and the computations are implemented and analyzed by the multi-slice moving electromagnetic field-circuit coupling model of the hydro-generator The results show that the waveforms of the no-load voltage are improved observably when reasonable shift damper winding and skewing stator slots. The calculation results are coincident well with the test data. The research is helpful for improving design standard and enhancing the operation reliability of the large hydro-generator and electric network.

No-Load Voltage Waveform Computation of the Different Design Schemes of Stator Slots Skewing Degree of Tubular Hydro-Generator

2015 ◽  
Vol 1092-1093 ◽  
pp. 296-299
Author(s):  
De Wei Zhang ◽  
Zhen Nan Fan
Keyword(s):  
Harmonic Distortion ◽  
Voltage Waveform ◽  
Distortion Factor ◽  
Load Voltage ◽  
Waveform Distortion ◽  
Design And Manufacture ◽  
Fractional Slot

To reduce the tubular hydro-generator no-load voltage waveform distortion,some different design schemes of stator slot skewing degree in a 36MW fractional slot tubular hydro-generator (q=11/2 ) are calculated and compared. Then, the relation of the no-load voltage waveform harmonic distortion factor (HDF) and stator slot skewing degree are revealed. The research provides the important reference informations for the optimization of no-load voltage waveform , and it is helpful for improving the industral design and manufacture standard of tubular hydro-generator.

No-Load Voltage Waveform Optimization of Integral Number Slots Large Hydro-Generator by Shift Damper Winding

2013 ◽  
Vol 765-767 ◽  
pp. 8-12
Author(s):  
Hong Lian Wang ◽  
Zhen Nan Fan
Keyword(s):  
Electromagnetic Field ◽  
Coupling Model ◽  
Voltage Waveform ◽  
Load Voltage ◽  
Design Standard ◽  
Waveform Optimization ◽  
Integral Number ◽  
Damper Winding

In order to analyze the influence of integral-number slots large hydro-generator no-load voltage waveform by the damper winding shift schemes, the 2D moving electromagnetic field-circuit coupling model is established, and the no-load voltage waveforms of a 600MW integral-number slots hydro-generator are calculated and analyzed. The results show that the tooth harmonics are weakened and the waveforms of the no-load voltage are improved observably when damper winding shift scheme adopted. The research is helpful for improving design standard and enhancing the operation reliability of the large hydro-generator.

Research of Simulation in the Main Circuit of Static Var Generator Based on Cascade H-Bride

2013 ◽  
Vol 392 ◽  
pp. 409-412
Author(s):  
Xian Bin Dai ◽  
Xiao Hua Yuan ◽  
Wei Du
Keyword(s):  
Output Voltage ◽  
Power Index ◽  
Matlab Simulation ◽  
Voltage Waveform ◽  
Distortion Factor ◽  
Harmonic Content ◽  
Three Phase ◽  
Static Var Generator ◽  
Waveform Distortion ◽  
Working Principle

This paper introduces the working principle of the research of simulation in the main circuit of Static Var Generator based on Cascade H-Bride and takes the three-phase Static Var Generator based on cascade H-Bride with rated capacity 10kVar,rated voltage 380V for example to proceed the MATLAB simulation. The research shows that the more amount of cascade H-Bride, the more number of output voltage levels in the main circuit of Static Var Generator, the smaller value of voltage waveform distortion factor, and the less harmonic content be inject in electric network, which improves power index.

The No-Load Voltage Waveform and Damper Bar Temperature Computation of Integral Number Slots Large Hydro-Generator which the Number of Damper Bars per Pole Increased

2014 ◽  
Vol 488-489 ◽  
pp. 843-846
Author(s):  
Ru Yang ◽  
Hong Jun Li ◽  
Zhen Nan Fan
Keyword(s):  
Electromagnetic Field ◽  
Temperature Field ◽  
Coupling Model ◽  
Fe Model ◽  
Voltage Waveform ◽  
Load Voltage ◽  
Electric Network ◽  
Design Standard ◽  
Integral Number

In order to analyze the no-load voltage waveform and damper bars temperature of integral number slots large hydro-generator which the number of damper bars per pole increased, the 2D moving electromagnetic field-circuit coupling model of a 600MW integral number slots hydro-generator and 3D temperature field FE model of the rotor are established, and the no-load voltage waveforms and temperature are calculated. The research is helpful for improving design standard and enhancing the operation reliability of the large hydro-generator and electric network.

Design, Model on MATLAB and Realization by C Language about Repetitive Control

2011 ◽  
Vol 467-469 ◽  
pp. 1438-1443
Author(s):  
Hu Huang ◽  
Jia Fen He
Keyword(s):  
Control System ◽  
Repetitive Control ◽  
Design Model ◽  
Parameter Design ◽  
Control Technology ◽  
Voltage Waveform ◽  
Matlab Software ◽  
C Language ◽  
Waveform Distortion ◽  
The Stability

Voltage waveform distortion of Aeronautical Static Inverter (ASI) has a solution, which is the repetitive control technology. In this paper, have established the model of repetitive control system; have stated its principles and method of parameter design; have proved the stability of repetitive control system; have verified the validity of it in MATLAB software; finally have established its C language procedure.

Effects of voltage-waveform distortion in TCR-type compensators

1993 ◽  
Vol 40 (3) ◽  
pp. 373-383 ◽  
Author(s):  
J.-C. Montano ◽  
B.J. Gutierrez ◽  
O.A. Lopez ◽  
I.M. Castilla
Keyword(s):  
Voltage Waveform ◽  
Waveform Distortion
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