Distributed generation system using parallel inverters supplied by unstable DC source

Younis, M.A.A. and Rahim, N.A. and Mekhilef, Saad (2009) Distributed generation system using parallel inverters supplied by unstable DC source. Journal of Applied Sciences, 9 (11). pp. 2045-2055. ISSN 18125654, DOI https://doi.org/10.3923/jas.2009.2045.2055.

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Official URL: http://www.doaj.org/doaj?func=abstract&id=604816


This study presents the analysis and design of distributed generation system. The system consists of a full-bridge DC-DC converter, two units of three-phase inverters connected in parallel and a controller. Two units of conventional three-phase DC-AC inverters connected in parallel with series resistors were added to the inverter output to maintain the same current in each inverter and to minimize the circulating current in the parallel inverters. High frequency third harmonic injection PWM (THIPWM) was employed to reduce the total harmonic distortion and to make maximum use of the DC bus voltage. The generation of control algorithm for three-phase inverter is implemented in Digital Signal Processing (DSP) boards. The THIPWM have been done such that the inverter output voltage is synchronized with the grid voltage thus making the inverter suitable for grid connection. The three-phase inverter operates with a total harmonic distortion of less than 2 on output voltage and current signals. Experimental results are shown validate the proposed system. A full distributed generation system has been implemented and tested, the testing of the system proves that the system operates with minimum circulating current on the parallel connected inverter and minimum harmonic distortion on the inverter output voltage and current.

Item Type: Article
Additional Information: Export Date: 16 November 2012 Source: Scopus Language of Original Document: English Correspondence Address: Younis, M. A. A.; Department of Electrical Engineering, University Industry Selangor, Bestari Jaya Campus, Jalan Timur Tambahan, 45600 Bestari Jaya, Selangor Darul Ehsan, Malaysia References: Cai, H., Zhao, R., Yang, H., Study on ideal operation status of parallel inverters (2008) IEEE Trans. Power Electron, 23, pp. 2964-2969; Cho, J.G., Sabate, J.A., Hua, G., Lee, F.C., Zero-voltage and zero-current-switching full bridge PWM converter for high-power applications (1996) IEEE Trans. Power Electron, 11, pp. 622-628; Daly, P.A., Morrison, J., Understanding the potential benefits of distributed generation on power delivery systems (2001) Proceedings of Rural Electric Power Conference, pp. A211-A213. , Apr. 29-1 May, IEEE Computer Society, USA; Grijalva, S., Visnesky, A.M., Assessment of distributed generation programs based on transmission security benefits (2005) IEEE Power Eng. Soc. Gen. Meet, 2, pp. 1441-1446; Hammons, T.J., International practices in distributed generation developments worldwide (2007) Proceedings of 42nd International Conference On Universities Power Engineering, pp. 885-894. , Sept. 4-6, IEEE Computer Society, Washington, DC. USA; Kwak, M.S., Sul, S.K., Control of an open winding machine in a grid-connected distributed generation system (2006) Proceedings of 41st IAS Annual Meeting IEEE Industry Applications Conference, pp. 2576-2580. , Oct. 8-12, IEEE Computer Society Washington, DC. USA; Kwasinski, A., Krein, P.T., Chapman, P.L., Time domain comparison of pulse-width modulation schemes (2003) IEEE Power Electron. Lett, 1, pp. 64-68; Lee, C.S., Kim, S., Kim, C.B., Hong, S.C., Yoo, J.S., A novel instantaneous current sharing control for parallel connected UPS (1998) Proceedings of 12th Telecommunication Energy Conference, pp. 513-519. , Oct. 4-8, San Francisco, CA, USA; Ma, X., Wang, W., Kang, Y., Chen, J., Series of two transistors forward ZVZCS converter with phase-shifted control for high input voltage (2005) Proceedings of 30th Annual Conference of IEEE Industrial Electronics Society, pp. 761-766. , Nov. 2-6, IEEE Computer Society Washington, DC. USA; Marei, M.I., El-Saadany, E.F., Salama, M.M.A., A novel control algorithm for the DG interface to mitigate power quality problems (2004) IEEE Trans. Power Delivery, 19, pp. 1384-1392; Marwali, M.N., Keyhani, A., Control of distributed generation systems-Part I: Voltages and currents control (2004) IEEE Trans. Power Electron, 19, pp. 1541-1550; Naik, R., Mohan, N., Rogers, M., Bulawka, A., A novel grid interface, optimized for utility-scale applications of photovoltaic, wind-electric and fuel-cell systems (1995) IEEE Trans. Power Delivery, 10, pp. 1920-1926; Igim, K.A., Hegazy, Y.G., Intentional islanding of distributed generation for reliability enhancement (2003) IEEE Power Eng. Soc. Gen. Meet, 4, pp. 2446-2451; Nigim, K.A., Lee, W.J., Micro grid integration opportunities and power challenges (2007) Proceedings of The IEEE Engineering Society General Meeting, pp. 1-6. , Jun. 24-28, IEEE Computer Society Washington, DC. USA; Ogasawara, S., Takagaki, J., Akagi, H., Nabae, A., A novel control scheme for current-controlled PWM inverters (1992) IEEE Trans. Ind. Appli, 28, pp. 1023-1030; Puttgen, H.B., Macgregor, P.R., Lambert, F.C., Distributed generation: Semantic hype of the dawn of a new era? (2003) IEEE Power Energy Maga, 1, pp. 22-29; Rashid, M.H., (2004) Power Electronics Circuits, Devices and Applications, , 3rd Edn., Prentice Hall, New York; (2004) TMS320x280x Enhanced Pulse Width Modulator (ePWM) Module Reference Guide, , http://focus.ti.com.cn/cn/lit/ug/spru791e/spru791e.pdf, Texas Instruments, Literature No. SPRU791; Vázquez, N., Rodriguez, H., Hernandez, C., Rodriguez, E., Arau, J., Three-phase rectifier with active current injection and high efficiency (2008) IEEE Trans. Indust. Electron, 56, pp. 110-119; Wang, F., Rosado, S., Thacker, T., Boroyevich, D., Power electronics building blocks for utility power system applications (2004) Proceedings of 4th International Power Electronics and Motion Control Conference, pp. 354-359. , Aug. 14-16, IEEE Computer Society Washington, DC. USA; Zhang, B., Huang, A.Q., Chen, B., A novel IGBT gate driver to eliminate the dead-time effect (2005) Proceedings of 14th IAS Annual Meeting, Conference Record of The 2005 Industry Applications Conference, pp. 913-917. , Oct. 2-6, IEEE Computer Society, Washington, DC. USA
Uncontrolled Keywords: DC/DC converter, Distributed generation, Inverters parallel connection, Third harmonic injection PWM.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 09 Sep 2013 01:56
Last Modified: 25 Oct 2019 04:08
URI: http://eprints.um.edu.my/id/eprint/4836

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