24 pulse rectifier realization by 3 phase to four 3 phase transformation using conventional transformers
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The document discusses the design and realization of a 24-pulse rectifier using a configuration of conventional single- and three-phase transformers to convert a single three-phase source into four three-phase systems. It details the methodology, simulation results from MATLAB/Simulink, and presents various figures illustrating the input line voltages and resulting output voltages. The conclusion affirms that the design meets theoretical expectations for harmonic and ripple control.
![ELECTRICAL PROJECTS USING MATLAB/SIMULINK
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
For Simulation Results of the project Contact Us
Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245
Figure 19 Experimental set up
CONCLUSION:
A 24-pulse rectifier is realized by conventional transformers that meets the theoretical harmonic
and ripple estimates.
REFERENCES:
[1] IEEE Recommended Practices and Requirements for Harmonics Control in Electric Power
Systems, IEEE Std. 519, 1992.
[2] Electromagnetic Compatibility (EMC)—Part 3: Limits-Section 2: Limits for Harmonic
Current Emissions (Equipment Input Current (16A per Phase), IEC1000-3-2, Dec., 1995.
[3] Draft-Revision of Publication IEC 555-2: Harmonics, Equipment for Connection to the
Public Low Voltage Supply System, IEC SC 77A, 1990.
[4] Bhim Singh, B. N. Singh, A. Chandra, Kamal Al-Haddad, Ashish Pandey, and D. P. Kothari,
―A Review of Three-Phase Improved Power Quality AC-DC Converters‖, IEEE Trans. Ind.
Electron., vol. 51, No. 3, June 2004, 641-660.
[5] S. Choi, ―New pulse multiplication technique based on six pulse thyristor converters for high
power applications,‖ IEEE Trans. Ind. Appl., vol. 38, no. 1, pp. 131–136, Jan./Feb. 2002.](https://image.slidesharecdn.com/24pulserectifierrealizationby3phasetofour3phasetransformationusingconventionaltransformers-150119004918-conversion-gate01/85/24-pulse-rectifier-realization-by-3-phase-to-four-3-phase-transformation-using-conventional-transformers-8-320.jpg)
24 pulse rectifier realization by 3 phase to four 3 phase transformation using conventional transformers
- 1. ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 For Simulation Results of the project Contact Us Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 24-Pulse Rectifier Realization By 3-Phase To Four 3-Phase Transformation Using Conventional Transformers ABSTRACT: A 24-pulse rectifier has been designed for high voltage, low current applications. Four 3-phase systems are obtained from a single 3-phase source using novel interconnection of conventional single- and 3-phase transformers. From two 30º displaced 3-phase systems feeding two 6-pulse rectifiers that are series connected, a 12-pulse rectifier topology is obtained. Thus, from the four 3-phase systems that are displaced by 15º two 12-pulse rectifiers are obtained that are cascaded to realize a 24-pulse rectifier. Phase shifts of 15º and 30º are made using phasor addition of relevant line voltages with a combination of single-phase and three-phase transformers respectively. PSCAD based simulation and experimental results that confirm the design efficacy are presented. SOFTWARE: MATLAB/SIMULINK
- 2. ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 For Simulation Results of the project Contact Us Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 BLOCK DIAGRAM: Figure 1 24-pulse rectifier realized by transforming a single 3-phase system to four 3-phase systems using conventional single- and three-phase transformers EXPECTED SIMULATION RESULTS: Figure 2 Input line voltages Va0b0, Vb0c0 and Vc0a0 at diode bridge I
- 3. ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 For Simulation Results of the project Contact Us Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 Figure 3 Input line voltages Va30b30, Vb30c30 and Vc30a30 at diode bridge II Figure 4 Input line voltages Va15b15, Vb15c15 and Vc15a15 at diode bridge III Figure 5 Input line voltages Va45b45, Vb45c45 and Vc45a45 at diode bridge IV
- 4. ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 For Simulation Results of the project Contact Us Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 Figure 6 Line current in phase a of y0 winding of Yy0d1 main transformer Figure 7 Line current in phase a of d1 winding of Yy0d1 main transformer Figure 8 Six-pulse dc output voltage of diode bridge, DBI
- 5. ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 For Simulation Results of the project Contact Us Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 Figure 9 DC 6-pulse output voltage of diode bridge, DBII Figure 10 DC 12-pulse output voltage by cascading diode bridges I and II Figure 11 Six-pulse dc output voltage of diode bridge, DBIII
- 6. ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 For Simulation Results of the project Contact Us Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 Figure 12 DC 6-pulse output voltage of diode bridge, DBIV Figure 13 DC 12-pulse output voltage by cascading diode bridges III and IV Figure 14 DC 24-pulse voltage by cascading DBI, DBII, DBIII and DBIV
- 7. ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 For Simulation Results of the project Contact Us Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 Figure 15 Line current in phase a of Y winding of Yy0d1 main transformer Figure 16 Line current in phase a of Y winding of Yy0d1 main transformer Figure 17 Panned view of 24-pulse dc voltage Figure 18 24-pulse dc voltage
- 8. ELECTRICAL PROJECTS USING MATLAB/SIMULINK Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 For Simulation Results of the project Contact Us Gmail: asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in 0-9347143789/9949240245 Figure 19 Experimental set up CONCLUSION: A 24-pulse rectifier is realized by conventional transformers that meets the theoretical harmonic and ripple estimates. REFERENCES: [1] IEEE Recommended Practices and Requirements for Harmonics Control in Electric Power Systems, IEEE Std. 519, 1992. [2] Electromagnetic Compatibility (EMC)—Part 3: Limits-Section 2: Limits for Harmonic Current Emissions (Equipment Input Current (16A per Phase), IEC1000-3-2, Dec., 1995. [3] Draft-Revision of Publication IEC 555-2: Harmonics, Equipment for Connection to the Public Low Voltage Supply System, IEC SC 77A, 1990. [4] Bhim Singh, B. N. Singh, A. Chandra, Kamal Al-Haddad, Ashish Pandey, and D. P. Kothari, ―A Review of Three-Phase Improved Power Quality AC-DC Converters‖, IEEE Trans. Ind. Electron., vol. 51, No. 3, June 2004, 641-660. [5] S. Choi, ―New pulse multiplication technique based on six pulse thyristor converters for high power applications,‖ IEEE Trans. Ind. Appl., vol. 38, no. 1, pp. 131–136, Jan./Feb. 2002.