A cost-effective single-stage inverter with maximum power point tracking

Renewable energy, such as solar energy, is desirable for power generation due to their unlimited existence and environmental friendly nature. However, the high initial investment impedes its wide commercialization. This paper proposes a cost-effective single-stage inverter with maximum power point t...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2004-09, Vol.19 (5), p.1289-1294
Main Authors: Yang Chen, Smedley, K.M.
Format: Article
Language:English
Subjects:
Alternative energy sources
Circuits
Commercialization
Costs
Electric potential
Electricity generation
Environmental impact
Impedance
Inverters
Investments
Maximum power
Photovoltaic cells
Photovoltaic systems
Power generation
Renewable energy resources
Solar cells
Solar energy
Solar power generation
Tracking
Tracking control systems
Voltage
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Summary:Renewable energy, such as solar energy, is desirable for power generation due to their unlimited existence and environmental friendly nature. However, the high initial investment impedes its wide commercialization. This paper proposes a cost-effective single-stage inverter with maximum power point tracking (MPPT) in combination with one-cycle control (OCC) for photovoltaic power generation. This control scheme is based on the output current-adjusting feature of OCC. The output current of the inverter can be adjusted according to the voltage of the photovoltaic (PV) array so as to extract the maximum power from it. In the mean time, OCC guarantees that the output current is proportional and in phase with the grid voltage. All these are accomplished in one power stage and a simple control circuit. No detection and calculation of power are needed. Compared with previously proposed approaches, this method is much more efficient and cost-effective and yet exhibits excellent performance. The principle is explained qualitatively and extensive experiments have been carried out to verify the proposed method.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2004.833458