Blog - Micro-Inverters

GWL Power is the largest European micro-inverter support...

GWL Power is the largest European micro-inverter support center

We are the larger support, testing and service center for solar micro-inverters by Involar company.

Learn about .

FAQ: How does the EMF-1 wattmeter show power supply to the...

FAQ: How does the EMF-1 wattmeter show power supply to the grid?

The usage of is very simple. The wattmeter will show the power supplied to the grid the same way, as it shows the consumption from the grid. There is no “plus” or “minus” sign. The wattmeter shows only the actual value, no matt

Question:

Question: Can the micro-inverter (in the GridFree installation) work in an island mode against some sine wave DC/AC generator? (e.g. in parallel with my own independent 230V island system)?

Answer:No, the microinverter in most cases will not work with in such mode. There a

What is a Grid-free - what is a Grid-tied

The Grid-Free installation is the name for the 100% self-consumption installation using the GRID-TIED inverters.

See the explanation about GridFree instalation here: ----------------------------------------------------- The basic GridFree principles:

Micro-Inveter Opens the GridFree World:

GridFree technology to reduce your

MicroInverters – The definite advantage: Long Life-span

MicroInverters – The definite advantage: Long Life-span

Central Inverter Installation

• Life-span given to 5 / 7 / 10 years
• Warranty? 2 / 3 / 5 years
• After life-span is over, complete replacement = cost increase!

Micro Inverter Installation

• Life-span given as 25+ years

MicroInverters – Safe Installation, Safe Repair

MicroInverters – Safe Installation, Safe Repair

FULL INSTALLER SAFETY - Micro-Inverters working with DC 50V.

• Easy and safe installation even under full sun-shine.
• Installation / Maintenance / Repair can be done without risks.

With microinverters a replacement or repair of a defec

MicroInverters – no problems with dust collection – no...

MicroInverters – no problems with dust collection – no thermal blocks

Central Inverter Installation

• Dust collection on components under air ventilation
• Dirt of the components increase overheating and makes aging fast

—> Result: LIFE SPAN IS SHORT  

MicroInverters - no internal overheating - long life-time...

MicroInverters - no internal overheating - long life-time performance

Comparing theCentral Inverters with Microinverters:

Central Inverter Installation

• 3 kW to 5 kW of power at one small place
• High energy density – high over-heating
• Components are under temperature stress (day – night cycle)
• Large coolers and radiator

Harvesting the additional energy from the solar panels

Harvesting the additional energy from the solar panels

Using more solar panels in parallel with one micro-inverter provides additional power. With the price of solar panels dropping, it seems feasible to have more panels per single inverter.

From the graphs you can learn about the example of the extra energy in

Multiple solar panels connected to single micro inverter

Multiple solar panels connected to single micro inverter

The graphs are showing the energy yields from multiple solar panels connected to single micro-inverter with a 230Watt rating. The graphs show results from a 250Wp panel, a 290Wp panel and two 250Wp panels in parallel making an equivalent of a 500Wp solar