Solar Inverter Architecture
Typical power electronics configuration for solar applications
DC/DC Stage
The DC/DC stage, or boost converter, increases the low voltage from the PV array to the optimal DC-link voltage for the inverter stage. This stage often includes MPPT (Maximum Power Point Tracking) functionality to maximize energy harvest under varying solar conditions.
DC/AC Inverter
The DC/AC inverter stage converts the DC voltage to grid-compatible AC power. This stage requires careful control to meet grid code requirements while maximizing efficiency. Semikron's components are optimized for the switching frequencies and thermal demands of solar inverter applications.
Key Requirements
- High efficiency across wide load range for maximum energy harvest
- Low losses during partial load conditions
- Compliance with grid interconnection standards
- Long-term reliability in harsh environments
FAE Technical Commentary
Expert insights on solar power applications
For maximum energy harvest, we recommend SEMiX modules with IGBT4 technology that provide excellent efficiency across the full operating range. The optimized VCEsat and switching characteristics are particularly beneficial for partial load conditions common in solar applications.
When designing for high-temperature operation, utilize Semikron's thermal simulation tools to properly size the cooling system. Account for the full ambient temperature range including solar loading on outdoor enclosures.
For utility-scale installations, consider the long-term availability of components when selecting parts. Semikron's commitment to long-term product availability ensures support for 20+ year project lifecycles.