A Canadian company says its inverter can convert DC power to AC electricity at a peak efficiency of 96 percent.
CALGARY, Alberta – Sustainable Energy Technologies Ltd of Calgary says initial testing of its 4 kW inverter shows the peak efficiency at 20 percent of full load, which is claims exceeds industry achievements to date. The test also shows that efficiency drops only slightly as power is increased, maintaining an average of 95 percent efficiency at full load. “This is a significant milestone”, says president and CEO Michael Carten. “The ability to accept such a wide range of input voltages while maintaining very high efficiencies is a critical factor in achieving industry efficiency targets, and is one of the key features that distinguishes our product from other power inverters on the market.” The company is also completing development of a software configurable DC-DC converter that has a fast response time, as well as bi-directional “buck” and “boost” capability. The DC-DC converter is used to charge and discharge batteries that are used in a stationary fuel cell system to maintain a constant power output as the customer’s load changes. “These two technologies will be deployed as part of an integrated fuel cell management system controlling the key power electronics functions and providing supervisory control for the fuel cell system,” he explains. Evaluation prototypes are due to be ready by this May. Sustainable Energy Technologies is developing and marketing energy management and power conditioning products for micro-generation applications such as fuel cells and solar energy. Its technologies provide power quality control and improve the efficiency of these applications, contributing to reduced electricity costs and greenhouse gas emissions.