System Features & Overview
The Hybrid UPS system maximizes efficiency and reliability by dynamically integrating solar PV arrays, wind generation, and utility power with existing infrastructure.
- Leverages existing UPS rectifier, inverter, and charge controller
- Daytime battery charging to peak power voltage (Vsmp) based on measured PV array's open circuit voltage (Vsoc) from the series-connected SPV/rectified wind generator. For wind speed w < 3m/s, the hybrid and SPV-only systems behave identically
- Nighttime wind-based load-support and battery charging (when wind speed exceeds 10m/s)
- Changes to the UPS to interface PV array and Smart Relay are simple and fail-safe
- Automatically switches in the appropriate power source (PV array / Wind / Utility)
- Minimizes power outage probability
- Maximizes expected solar and wind power utilization
- Minimizes expected grid power utilization
- Minimizes expected life cycle costs (including capital amortization, battery replacement, and system maintenance)
System Diagnostics:
- Battery-operated hand-held PC may monitor PV/Wind/UPS performance (through isolated com-port)
- Faults that distort the Voc vs Vmp relationship are identified by monitoring Voc and Vdc time series
- Automatic over-voltage protection hardware (solid-state relay with manual reset)
- Identifies loose connections (e.g., from PV array/Wind to UPS DC bus)
Smart relay may be upgraded for additional features (e.g., demand side management)
User Documentation
Download system user manual
Towards zero emissions...
Solar tracking PV arrays, Windmill and Electric cars
UPS with modifications