Micro Inverter dspic based reference design by Microchip
Microchip has a micro inverter reference design with MPPT here:
http://www.microchip.com/stellent/id...cName=en551429
Key Features:
- Peak efficiency of 95%
- Output current THD < 5%
- Power factor >0.95
- Maximum power point tracking
- Grid voltage and frequency tracking
- Protection against various current and voltage faults
- Night time power consumption <1W
- System Islanding to detect grid failure
- Full Digital Control
Specifications:
- Micro Inverter for individual PV Module up to 220W
- Wide PV Panel voltage : 25V to 55V DC
- Maximum Power Point Tracking voltage: 25V to 45V
- Maximum DC short circuit current : 10A
- Grid Frequency range :
47 – 53 Hz for 220V systems
57 – 63 Hz for 110V systems
- Grid voltage range :
90V – 140V for 110V systems
180V – 264V for 220V systems
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