Solar Inverter
Performance measurement static simulators MPP Tracking
MPPT solar inverter generators, high stability are necessary for accurate measurements and reproducible results MPP tracking static, linear diode simulators used by many laboratories to test less suitable for this purpose because of problems thermal stability inherent in them.
Moreover, solar generators simulator controlled by PC, which can simultaneously measure the amounts, both in terms of power (eg, MPPT, cos, harmonics) and automatic measurements are possible due to a change in current levels of Following a particular property. A period of stabilization (eg, 60 seconds for investors to control and slow MPP above) is required before the measurement of static MPP tracking MPPT results after setting a new level of power.
The current and DC voltage, then, during the measurement period following TM, if possible to simultaneously measure a high frequency scanning (eg 1000 10 000 measurement points). The formation of an average of 50 ms or 100 ms is useful for removing the component of 100 Hz typical single-phase inverter DC side. The performance of the static MPP tracking is the ratio of DC energy actually absorbed by the UPS during the measurement period and Energy.
DC PMPP TM offered by the simulator
The static MPP-tracking performance MPPT therefore déterminécomme: The accuracy of conventional energy meters are generally too slow to provide sufficiently accurate values of MPP. Therefore, the scanning method and the constitution described above the average should be much better. The measurement values thus obtained can be shown in the diagrams of figures called cloud.
It is useful to indicate the MPP-tracking behavior specific to the different branches, representing MPPT based on power and GPP in the same diagram to indicate on a second axis, on one hand the actual measured value and Umpp other, the average DC input voltage effectively regulated by the UPS of the property. Since the entry of MPP-Tracking is the maximum power available from the solar array PMPP, MPPT is helpful represented as a function of PMPP.
Furthermore, it is advantageous to compare the behavior of investors of different sizes, standardize the maximum output of the DC power from the UPS PDCN therefore represent PMPP based MPPT / PDCN.
