Energy Optimization

Current PV inverter systems are optimized for peak power efficiency. This maximizes utility and government subsidies, but does not optimize total energy saving per dollar of installed system cost. The EMPS system is designed to bring a wide variety of system efficiency improvements in both energy harvesting and consumption not supported in current inverter systems.

Some of the additional system benefits of the EMPS inverter system are...

Grid-tied, Grid-independence

Full operation to local loads during grid failures without batteries

Separate AC interface for local loads and grid

Ability to deliver reactive/surge power to local loads

Lower Voltage, Parallel PV Array

Modularized low voltage PV array reduces engineering and installation costs

Less sensitive to partial shading than high voltage string arrays

Universal Distributed Generation Inverter

Same inverter system supports battery, wind, fuel cell, geothermal, tidal and other sources

Enables Energy Management Systems

400VDC for high efficiency variable speed DC motors in air conditioning and heat pumps

48VDC for high efficiency DC lighting

Enables cost optimization of power storage and release for time-of-day cost metering

The Solar Energy Grid Integration Systems (SEGIS) is a US Department of Energy (DOE) directed effort to maximize the value of PV systems to owners, utilities and governments. This is accomplished with energy management systems enabled by the EMPS inverter system SEGIS Concept Paper 372KB pdf