Three-phase inverter solution

What is a three-phase string inverter system?

Three-phase string inverter systems convert the DC power generated by the photovoltaic (PV) panel arrays or ‘string’ into AC power fed into a 220V or higher three-phase grid connection.

How many kW can a 3 phase string inverter run?

Therefore, higher switching operation is desirable to reduce the size and cost of the system. Building a single inverter of 6 kW up to 350 kW and connecting them in parallel to reach power levels up to 20 MW is common. Infineon offers a wide range of solutions for 3-phase string inverters. Usually, these inverters are rated from 6 kW up to 350 kW.

What type of inverter does Infineon offer?

Infineon offers a wide range of solutions for 3-phase string inverters. Usually, these inverters are rated from 6 kW up to 350 kW. For power up to 20 kW, Infineon’s discrete IGBTs, CoolSiC™ MOSFETs, and CoolSiC TM Schottky diodes are the preferred choice to achieve the best price-to-performance ratio.

What is the power level of a 3 phase system?

The design of three-phase systems typically has a DC link operating at 1100 V or 1500 V. Power levels range from 8 kW to above 150 kW nowadays, used in large residential, commercial, and decentralized utility-scale applications.

How do string inverters work?

String inverters typically rely on two-stage power conversion. First, the DC-DC stage converts variable DC voltage into a suitable or fixed voltage required by the DC-AC inverter stage. At the same time, it ensures maximum power, which has been extracted from the PV string via MPPT (Maximum Power Point Tracking) technique.

What is a hybrid inverter?

The hybrid inverter type is gaining popularity due to the improved self-consumption of solar power. Like string inverters, hybrid inverters can connect multiple photovoltaic panels and convert D-C to A-C. But, on top of that, hybrid inverters can also supply D-C currents directly to a battery or another energy storage system.