power quality improvment of 1 phase
TRANSCRIPT
![Page 1: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/1.jpg)
Presented
By
Tashif Alam
SCHOOL OF ELECTRICAL ENGINEERINGKIIT UNIVERSITY
![Page 2: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/2.jpg)
OUTLINE
2
1. Introduction
2.Single phase grid-integrated PWM-VSI
3.Hysteresis current controller (HCC)
4.Hysteresis current controller with offset
5.Simulation result and discussion
6.Conclusion
7.Reference
05/01/23
![Page 3: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/3.jpg)
• PWM-VSI are widely used because of its harmonic elimination
capacity
• HCC is preferred owing to its good current tarcking ability,
unconditional stability and quick current controllability
• HCC for single phase grid connected PWM-VSI has been
implemented by introducing an extra offset hysteresis band.
• The switching stress is reduced as this method.
3
INTRODUCTION
05/01/23
![Page 4: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/4.jpg)
4
SINGLE PHASE PWM-VSI
Block diagram of PWM-VSI
05/01/23
![Page 5: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/5.jpg)
5
REFERENCE CURRENT
05/01/23
where ( )
![Page 6: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/6.jpg)
6
OVERALL BLOCK DIAGRAM
05/01/23
![Page 7: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/7.jpg)
7
HYSTERESIS CURRENT CONTROLLER(HCC)
• HCC operates by comparing the error current with a fixed hysteresis band
• HCC is superior owing to its high
stability, higher accuracy. HCC Technique
Switiching logic of HCC
05/01/23
![Page 8: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/8.jpg)
8
HCC WITH OFFSET TECHNIQUE
05/01/23
![Page 9: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/9.jpg)
9
HCC WITH OFFSET TECHNIQUE
Hcc with offset, Positive Inverter output Hcc with offset, Negative Inverter output
05/01/23
![Page 10: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/10.jpg)
DC link voltage & utility grid voltage Grid voltage & output current
10
Simultation Result
05/01/23
![Page 11: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/11.jpg)
Result of actual current, reference current of HCC
Result of actual current, reference current of HCC with offset
11
Simultation Result
05/01/23
![Page 12: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/12.jpg)
Result of actual current, reference current of HCC for 1-cycle
Result of actual current, reference current of HCC with offset
for 1-cycle
12
Simultation Result
05/01/23
![Page 13: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/13.jpg)
Result of current error of HCC Result of current error of HCCwith offset
13
Simultation Result
05/01/23
![Page 14: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/14.jpg)
THD of actual current of HCC
Result of switching frequency of HCC with offset
14
Simultation Result
Result of switching frequency of HCC
THD of actual current of HCC with offset
05/01/23
![Page 15: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/15.jpg)
15
CONCLUSION
The HCC with offset scheme is implemented to achieve lower switiching . Another advantages is, average value of the current error is smaller as
compared to HCC
05/01/23
![Page 16: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/16.jpg)
16
REFERENCES
[1] Falk, H., "Prolog to renewable energy today and tomorrow," in Proceedings of the IEEE , vol.89, no.8, pp.1214-1215, Aug. 2001.
[2] Kroposki, B.; Pink, C.; DeBlasio, R.; Thomas, H.; Simões, M.; Sen, P.K., "Benefits of Power Electronic Interfaces for Distributed Energy Systems," IEEE Transactions on Energy Conversion, , vol.25, no.3, pp.901-908, Sept. 2010.
[3] Bose, B.K., "Global Energy Scenario and Impact of Power Electronics in 21st Century," IEEE Transactions on Industrial Electronics, , vol.60, no.7, pp.2638-2651, July 2013.
[4] D. G. Holmes, T. A. Lipo, B. P. McGrath, and W. Y. Kong, “Optimised design of stationary frame three phase AC current regulators,” IEEE Trans. Power Electron., vol. 24, no. 11, pp. 2417–2426, Nov. 2009.
[5] Timbus, A.; Liserre, M.; Teodorescu, R.; Rodriguez, P.; Blaabjerg, F., "Evaluation of Current Controllers for Distributed Power Generation Systems IEEE Transactions on in Power Electronics, , vol.24, no.3, pp.654-664, March 2009.
[6] Huifeng Mao; Xu Yang; Zenglu Chen; Zhaoan Wang, "A Hysteresis Current Controller for Single-Phase Three-Level Voltage Source Inverters," IEEE Transactions on Power Electronics, , vol.27, no.7, pp.3330-3339, July 2012.
[7] D. Torrey and A. Al-Zamel, "Single-phase active power filters for multiple nonlinear loads," IEEE Transactions on Power Electronics, vol. 10, no. 3, pp. 263-272, May 1995.
05/01/23
![Page 17: Power quality improvment of 1 phase](https://reader037.vdocuments.net/reader037/viewer/2022110107/588af6d71a28abf8548b5831/html5/thumbnails/17.jpg)
17
THANK YOU FOR ATTENTION
05/01/23