Verfahren und Anordnung zur Verfolgung des maximalen Leistungspunkts eines photovoltaischen Moduls

Details

Veröffentlichungs-Nr.

EP2431832

Aktenzeichen

EP10177842

Anmeldetag

21. September 2010

Veröffentlichung

15. Mai 2013

Erteilung

15. Mai 2013

Rechtsraum

EP

IPC

G05F1/67

Abstract

A method and apparatus of tracking the maximum power point of a photovoltaic module, the method comprising measuring output voltage ( v C ) of the photovoltaic module, determining output voltage ( e ) of the inverter connected to the photovoltaic module, measuring output current ( i 1 ) of the inverter connected to the photovoltaic module. The method further comprises defining a variable ( z ) relating to energy of the capacitor using the measured PV module output voltage, extracting second harmonic component ( z ) from the defined variable ( z ), estimating the second harmonic component ( p ) of the module output power ( p ) using the defined variable (z), measured output current ( i 1 ) of the inverter and the determined output voltage ( e ) of the inverter, multiplying the obtained harmonic components with each other, extracting a DC component (À p z ª DC ) from the obtained product ( p z ), and forming a control signal ( P ; v ref ) for controlling the inverter connected to the photovoltaic module by using the extracted DC component in a PI algorithm.

Anmelder

Firma

ABB Research Ltd

Land

🇨🇭 Schweiz

Fachgebiete