Power reserves control for PV systems with real-time MPP estimation via curve fitting
File(s)Batzelis - Power reserves control [accepted].pdf (2.86 MB)
Accepted version
Author(s)
Batzelis, EI
Kampitsis, GE
Papathanassiou, SA
Type
Journal Article
Abstract
In order for a photovoltaic (PV) system to provide a full range of ancillary services to the gird, including frequency response, it has to maintain active power reserves. In this paper, a new control scheme for the dc/dc converter of a two-stage PV system is introduced, which permits operation at a reduced power level, estimating the available power (maximum power point-MPP) at the same time. This control scheme is capable of regulating the output power to any given reference, from near-zero to 100% of the available power. The proposed MPP estimation algorithm applies curve fitting on voltage and current measurements obtained during operation to determine the MPP in real time. This is the first method in the literature to use the nonsimplified single-diode model for the determination of the MPP and the five model parameters while operating at a curtailed power level. The developed estimation technique exhibits very good accuracy and robustness in the presence of noise and rapidly changing environmental conditions. The effectiveness of the control scheme is validated through simulation and experimental tests using a 2-kW PV array and a dc/dc converter prototype at constant and varying irradiance conditions.
Date Issued
2017-02-24
Online Publication Date
2017-02-24
2017-09-15T09:10:52Z
Date Acceptance
2017-02-18
ISSN
1949-3029
Publisher
Institute of Electrical and Electronics Engineers
Start Page
1269
End Page
1280
Journal / Book Title
IEEE Transactions on Sustainable Energy
Volume
8
Issue
3
Copyright Statement
© 2017 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
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Source Database
web-of-science
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000404251100035&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Technology
GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Energy & Fuels
Engineering, Electrical & Electronic
Science & Technology - Other Topics
Engineering
Active power control
curve fitting
linearized converter model
maximum power point tracking (MPPT)
photovoltaic (PV)
power reserves
single-diode model
RIPPLE CORRELATION CONTROL
POINT TRACKING
MODEL PARAMETERS
PHOTOVOLTAIC GENERATION
CONTROL STRATEGY
ENERGY-STORAGE
EXTRACTION
0906 Electrical And Electronic Engineering
0915 Interdisciplinary Engineering
Publication Status
Published