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(SiC MOSFETS) that present some advantages, such as higher current and voltage breakdown, heat transfer,
and efficiency. But this new technology is expensive and still has some problems. On the other hand, inverters
generally use IGBTs, which are more feasible and have the main advantage of being much stronger than
MOSFETs when susceptible to surges and back electromagnetic fields (EMF).
1.3.1. BASIC HIGH-FREQUENCY CHANGEOVER INVERTERS
A high-frequency inverter with a changeover switch is merely a standard off-grid inverter. This is the type
of inverter that you will buy in a car shop or take to camping. It has a relay or a contact in the front end to
allow the AC to pass directly from the grid to the load. When the grid fails, the relay can changeover and divert
the power from the load to the inverter
1.3.2. BASIC HIGH-FREQUENCY CHARGER INVERTERS
This inverter is similar to the above except that it has an additional small battery charger. Therefore, it is
possible to charge the batteries through the AC grid for later use.
1.3.3. MULTI-MODE HYBRID INVERTERS
Multi-mode hybrid inverters tend to be a larger version of the charger inverter, usually 5kW or 8kW. This
inverter has a few more features than a charger inverter, and some can even be wired in parallel.
Many of these inverters of this type will have communication software to work with lithium batteries (BMS).
1.3.4. AC COUPLED HYBRID INVERTERS
The great advantage of the AC Coupled Hybrid Inverter is that it operates in a similar manner as the On-
Grid Inverter. Therefore, you can have a much smaller inverter and do not need to worry about the peak
demand of the load since it is connected directly to the AC.
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