Single-phase inverter enterprise

Infineon provides semiconductor products for string inverters, like power transistors, gate drivers, current sensors, control, connectivity, and more Single-phase string inverters perform DC to AC power conversion on series-connected PV panels. The inverter optimizes the solar energy yield through maximum power point tracking (MPPT).

1-phase inverters are designed for smaller systems with an output of up to around 10 kW. For larger solar systems that need to generate more electricity, they quickly reach their technical limits. If the energy requirement exceeds this range, single-phase inverters can no longer provide the power efficiently.

Single-phase inverters convert the direct current (DC) generated by solar modules into grid-compliant alternating current (AC). They are particularly suitable for smaller photovoltaic systems in private households or small commercial applications with an energy requirement of up to around 10 kW.

Single-phase inverters are ideal for smaller solar systems, especially in private households. They are ideal for: Private households: Single-family homes and small apartments with moderate power consumption. Small commercial enterprises: Offices, stores or workshops with manageable energy requirements.

A 10kW single-phase reference design based on GaN devices Figure 3 is a schematic representation of the converter. DC/DC Boost with MPPT1 Input range: 50-500V ISC: 18A Max. DC current: 14A Figure 3. Single-phase string inverter reference design block diagram Two boost converters for two independent string inputs, each 5kW rated (134kHz).

With an overall system efficiency close to 98% and a power density of 2.3kW/L, the string inverter reference design demonstrates great performance. In addition, the implementation of an integrated gate-driver solution could lead to cost reductions when considering the total system cost.