Flyback Inverter Using Voltage Sensorless MPPT for Photovoltaic AC Modules

Dong-Kyun Ryu; Bong-Yeon Choi; Soon-Ryung Lee; Young-Ho Kim; Chung-Yuen Won

Flyback Inverter Using Voltage Sensorless MPPT for Photovoltaic AC Modules

Vol. 14, No. 6, pp. 1293-1302, Nov. 2014

10.6113/JPE.2014.14.6.1293

AC Modules

MPPT (Maximum Power Point Tracking)

Photovoltaic power generation systems

Voltage Sensorless

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Abstract

A flyback inverter using voltage sensorless maximum power point tracking (MPPT) for photovoltaic (PV) AC modules ispresented. PV AC modules for a power rating from 150 W to 300 W are generally required for their small size and low pricebecause of the installation on the back side of PV modules. In the conventional MPPT technique for PV AC modules, sensors fordetecting PV voltage and PV current are required to calculate the PV output power. However, system size and cost increase whenthe voltage sensor and current sensor are used because of the addition of the auxiliary circuit for the sensors. The proposed methoduses only the current sensor to track the MPP point. Therefore, the proposed control method overcomes drawbacks of theconventional control method. Theoretical analysis, simulation, and experiment are performed to verify the proposed control method.

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Cite this article

[IEEE Style]

D. Ryu, B. Choi, S. Lee, Y. Kim, C. Won, "Flyback Inverter Using Voltage Sensorless MPPT for Photovoltaic AC Modules," Journal of Power Electronics, vol. 14, no. 6, pp. 1293-1302, 2014. DOI: 10.6113/JPE.2014.14.6.1293.

[ACM Style]

Dong-Kyun Ryu, Bong-Yeon Choi, Soon-Ryung Lee, Young-Ho Kim, and Chung-Yuen Won. 2014. Flyback Inverter Using Voltage Sensorless MPPT for Photovoltaic AC Modules. Journal of Power Electronics, 14, 6, (2014), 1293-1302. DOI: 10.6113/JPE.2014.14.6.1293.