A Maximum Power Point Tracking Control for Photovoltaic Array without Voltage Sensor

Tomonobu Senjyu; Tomiyuki Shirasawa; Katsumi Uezato

A Maximum Power Point Tracking Control for Photovoltaic Array without Voltage Sensor

Tomonobu Senjyu

Tomiyuki Shirasawa

Katsumi Uezato

Vol. 2, No. 3, pp. 155-161, Jul. 2002

10.6113/JPE.2001.02.3.155

Maximum power point tracking

Output current

Analog integral circuit

PV system

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Abstract

This paper presents a maximum power point tracking algorithm for Photovoltaic array using only instantaneous output current information. The conventional Hill climbing method of peak power tracking has a disadvantage of oscillations about the maximum power point. To overcome this problem, we have developed an algorithm that will estimate the duty ratio corresponding to maximum power operation of solar cell. The estimation of the optimal duty ratio involves, finding the duty ratio at which integral value of output current is maximum. For the estimation, we have used the well know Lagrange's interpolation method. This method can track maximum power point quickly even for changing solar isolation and avoids oscillations after reaching the maximum power point.

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Cite this article

[IEEE Style]

T. Senjyu, T. Shirasawa, K. Uezato, "A Maximum Power Point Tracking Control for Photovoltaic Array without Voltage Sensor," Journal of Power Electronics, vol. 2, no. 3, pp. 155-161, 2002. DOI: 10.6113/JPE.2001.02.3.155.

[ACM Style]

Tomonobu Senjyu, Tomiyuki Shirasawa, and Katsumi Uezato. 2002. A Maximum Power Point Tracking Control for Photovoltaic Array without Voltage Sensor. Journal of Power Electronics, 2, 3, (2002), 155-161. DOI: 10.6113/JPE.2001.02.3.155.