Name: SunSynk 8kW
Brand: SunSynk
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Website: www.sunsynk.com E-mail: sales@globaltech-china.com

1.2. A SIMPLE HYBRID INVERTER

A simple way to represent a hybrid inverter is actually by an off-grid inverter with a changeover contactor

(a large relay). Many so-called hybrid inverters are standard off-grid inverters with a charger circuit and a

changeover switch, as presented in the diagram of Figure 2.

Figure 2 - Simple representation of a hybrid inverter.

The diagram presented in Figure 2 presents a basic system. However, it has many flaws. The biggest

issue with this system in residential applications is that the total power of the house must be powered through

the inverter. Therefore, if you have a peak demand of 20kW in your house, then you must install a large

capacity 20kW inverter or bigger to allow for peaks in consumption.

Also, in this type of inverters, the AC charge circuits (If any) tend to be quite small. Therefore, charging

from the AC supply will take a long time.

1.3. TYPES OF HYBRID INVERTERS

Inverters can be divided into two categories: low frequency and high-frequency inverters. These apply to

hybrid, string, and battery inverters, which have the ability to be either low-frequency or high-frequency

inverters.

High-frequency inverters fall into two categories as well:

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Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET) driven inverters

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Insulated-Gate Bipolar Transistors (IGBTs) driven inverters.

Inverters that employ MOSFET technology are traditional high-frequency inverters, and this drive

technology is used in most professional inverters. Currently, some inverters use Silicon-Carbide MOSFETs

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