EMPS Technology

EMPS inverter system delivers several technology breakthroughs that can revolutionize photovoltaic power systems. These technology breakthroughs include...

1^st fully soft switching inverter system

All switching at zero current & zero voltage transitions

Minimizes switching energy loss

1^st to use MOSFETs instead of IGBTs

Minimizes conduction energy loss

1^st to develop ripple cancellation technology

Minimizes ripple energy loss

Eliminates harmonics improving AC quality of power

1^st to eliminate large transformers and capacitors

Component cost is driven by semiconductors with steady cost reduction vs large transformers and capacitors whose cost is based on commodity materials (copper, iron etc).

1^st to use 2 stage converter/inverter system

Enables energy management systems improving consumption efficiencies

1^st to provide separate AC interfaces for local loads and grid

Enables full operation to local loads when grid is down without batteries

1^st to provide reactive power

Supports surge power for inductive loads without batteries or capacitor banks

This technology was initially developed by Dr. Jason Lai, Professor and Director of Virginia Tech's Future Energy Electronics Center. The DOE has already been a major investor in this core technology development such as the six phase converter system used by EMPS. This technology has already been adopted for applications with Solid Oxide Fuel Cells and for next generation combat vehicles for the U.S. Army. Solid Oxide Inverter Solution 191KB pdf

EMPS has exclusive worldwide rights for this technology including several pending patents for renewable energy generation, EMPS exclusive applications includes solar and wind, but does not including solid oxide fuel cells.

EMPS initial product under development is a 5KWp PV inverter solution for residential applications. This innovative soft switching combines a 48VDC to 400VDC converter and a 400VDC to 120VAC single phase inverter. The 48VDC to 400VDC converter will also be available as a separate product.