IEEE Transactions on Power Electronics · 2008 · 225 citations · 19 references
EngineeringElectrical EngineeringPower ElectronicsRenewable Energy IntegrationRenewable Energy SystemsDc-dc ConvertersPower Electronics For Renewable EnergyRenewable Energy Power ConversionSolar Energy SystemsSolar Photovoltaic SystemsVoltage RegulationBoost ConvertersDc-link Voltage ControlEnergy Conversion EfficiencyMaximum Power Point TrackingPhotovoltaic SystemsPower ConversionPower Conversion EfficiencyPower Factor
This paper proposes a three-phase photovoltaic (PV) system with three-level boosting maximum power point tracking (MPPT) control. A simple MPPT control using a power hysteresis tracks the maximum power point (MPP), giving direct duty control for the three-level boost converter. The three-level boost converter reduces the reverse recovery losses of the diodes. Also, a weighted-error proportional and integral (PI) controller is suggested to control the dc link voltage faster. All algorithms and controllers were implemented on a single-chip microprocessor. Experimental results obtained on a 10-kW prototype show high performance, such as an MPPT efficiency (MPPT effectiveness) of 99.6%, a near-unity power factor, and a power conversion efficiency of 96.2%.
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