Important parameters and characteristics of grid connected solar system inverters

Grid connected solar inverter is the access device which connect batteries to power grid. The working principle is that the convery electric energy to AC and transmitted to the power network. Plays a important role in grid connected power generation system, the three indicators of high efficiency, high power density, high reliability determines the quality of photovoltaic inverter. The parameters and performance of power grid connected inverter of different manufacturers are also not the same, especially the efficiency, which is directly related to the generating capacity of photovoltaic power plant. Here are the parameters of the data of grid connected inverter as a reference.
Parameters of grid connected solar system inverters
1.Output capacity: single phase 0.5-100KVA, three-phase 2-200KVA.
2.Output voltage: AC220 ±3%, 380 ±3%.
3.Output frequency: 50Hz ±0.05.
4.Waveform distortion rate: <5%.
5.Power factor: 0.8.
6.Overload capacity: overload 150%, 10S.
Characteristics of grid connected solar system inverters
1.The highest efficiency of 98.6%, the European efficiency of 97.5, MPPT efficiency of 99.9%.
2.Modular design, easy installation and maintenance.
3.Automatic selection of output power according to the input conditions (100%, 80%, 60%, 40%, 20%, 0%).
4.Filter out its own harmonic.
5.Low voltage ride through.
6.Over / under voltage, over / under frequency and over current protection.
7.Active and passive combination, anti-islanding.
8.Reactive power adjustable, power factor range from lead 0.95 to lag 0.95.
9.Adapt to the harsh environment of the power grid, the operating frequency of 50/60 ±4.5Hz.

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