PREN 50530 : DRAFT 2008

1 Scope
2 Normative references
3 Terms and definitions
   3.1 Inverter input (PV generator)
   3.2 Inverter output (grid)
   3.3 Measured quantities
   3.4 Calculated quantities
   3.5 Other definitions
4 MPPT efficiency
   4.1 General description
   4.2 Test set-up
   4.3 Static MPPT efficiency or accuracy
   4.4 Dynamic MPPT efficiency or accuracy
   4.5 Static power conversion efficiency
5 Calculation of the overall efficiency
Annex A (normative) - Requirements on the measuring apparatus
   A.1 PV generator simulator
   A.2 AC power supply
Annex B (normative) - Test conditions for dynamic MPPT efficiency
   B.1 Test profiles
   B.2 Test sequence with ramps 10% - 50% P[DCn]
   B.3 Test sequence with ramps 30% - 100% P[DCn]
   B.4 Start-up and shut-down test with slow ramps
   B.5 Total test duration
Annex C (normative) - Models of current/voltage characteristic
        of PV generator
   C.1 1-Diode model
   C.2 PV generator model for MPPT performance tests
Annex D (informative) - Inverter efficiency
   D.1 General/Introduction
   D.2 Conversion efficiency
   D.3 MPP-tracking efficiency
   D.4 Overall efficiency eta[t]
   D.5 Consequences
Bibliography

Gives a procedure for the measurement of the accuracy of the maximum power point tracking (MPPT) of inverters, which are used in grid-connected photovoltaic systems.