Harmonic currents emission of photovoltaic inverters is known phenomena of photovoltaic inverters. How much are in your experience harmonic currents emission of those inverters?
Which are limited values of those harmonics.
The limits for EU are set by the EMC Directive and the Low voltage Directive mainly for the low voltage of course. But keep in mind that PV inverters are emitting harmonics of high order
Each country has its local code for grid-connected inverters. In Egypt for example the THD must be less than 5% of the injected current.
Dear Ivan
This is not within my main line of business. I can try to find in my relations a colleague with a reasonable experience. Is this sufficient to you?
Greetings
Manuel
Thank you all.
I would be appreciate Manuel.
I did some measurements in severel PV plants.
I found some of inverters with high THDI. But I have some doubts.
Even THDI is high, THDU is within acceptable limits and other power quality parameters are within acceptable limits?
Why some inverters have high THDI and some low (for same conditions)?
THDI increases distorsion power (losses), but level of those losses is low, and decreases life time of equipment?
Some other negative effects of THDI?
in matlab simulation i have reduce harmonics level below 0.5%
IEEE 1547 says for standalone system 5%
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