Browse > Article
http://dx.doi.org/10.6113/TKPE.2018.23.4.281

Isolated Feedback of Inverter DC-Link Voltage Using Flyback Converters  

Kim, Kyung-Seo (Dept. of Electrical Eng., Sangmyung Univ.)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.23, no.4, 2018 , pp. 281-285 More about this Journal
Abstract
An isolated feedback method for measuring the inverter DC-link voltage is proposed. This method provides a simple and economical solution to inverter control systems that use a flyback converter as a controller power supply. In the proposed method, data on the DC-link voltage are acquired when the primary side voltage appears on the secondary side of the flyback transformer, thereby eliminating the need to adopt an extra signal isolation method. To solve the non-synchronization problem between the flyback converter switching and main controller sampling, the external interrupt function of the micro-controller is used as a trigger signal for the A/D conversion.
Keywords
DC-link voltage; Isolated feedback; Voltage sensing; Flyback converter;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 M. Carpenter and M. Broadmeadow, "Design of coreless PCB transformers for power and signal isolation in a modular ADC system for power quality data acquisition," in Proc. Australas. Univ. Power Eng. Conf., pp. 1-6, 2014.
2 HCPL-7800A/HCPL-7800 Isolation Amplifier Data Sheet, Agilent, Feb. 2005.
3 C. Chang and C. Chen, “An isolated output-feedback scheme with minimized standby power for SMPS,” IEEE Trans. Power Electron., Vol. 28, No. 11, pp. 5140-5146, Nov. 2013.   DOI
4 Vishay, Optoelectronic feedback control techniques for linear and switch mode power supplies, Vishay Semiconductors, Application Note 55, Oct. 2011.
5 B. Irving and M. Jovanovic, “Analysis and design optimization of magnetic-feedback control using amplitude modulation,” IEEE Trans. Power Electron., Vol. 24, No. 2, pp. 426-433, Feb. 2009.   DOI
6 K. S. Kim, “Isolation amplifier circuits for sensing and feedback of the inverter dc-link voltage,” Trans. Korean Inst. Power Electron., Vol. 19, No. 6, pp. 522-529, Dec. 2014.   DOI
7 K. S. Kim, “DC-link voltage measurement method suitable for power converter systems controlled by a ${\mu}$-controller,” IEEE Transactions on Power Electron., Vol. 30, No. 12, pp. 6502-6505, Dec. 2015.   DOI
8 T. Minteer, “Design of a new transformer-isolated analog acquisition system,” IEEE Trans. Power Del., Vol. 24, No. 3, pp. 1054-1062, Jul. 2009.   DOI
9 C. Wang, S. Xu, X. Fan, S. Lu, and W. Sun, "Novel digital control method for improving dynamic responses of multimode primary-side regulation flyback converter," IEEE Transactions on Power Electronics, Vol. 32, No 2, pp. 1457-1468, Feb. 2017.   DOI
10 Y Lin, T. Liang, and K. Chen, "IC design of primary -side control for flyback converter," Future Energy Electronics Conference, pp. 449-453, 2013.
11 C. Lin and Y. Tzou, "Digital primary-side sensing and PFC control of a flyback converter," IEEE Energy Conversion Congress and Exposition, pp. 2603-2608, 2011.