Calnetix Technologies Awarded Two Additional Patents

July 3, 2013

Inventions Cover Cooling Electrical Machine Components, Generating Energy from Fluid Expansion

Cerritos, Calif. – July 3, 2013 – Calnetix Technologies, a pioneer in developing and manufacturing high-speed permanent magnet motor generators, power electronics and magnetic bearings for a variety of applications and industries, recently received two new patents spearheaded by Co-Founders Co Huynh and Larry Hawkins.

The inventions cover the use of an integral centrifugal impeller to cool electrical components and the generation of energy from fluid expansion.

“Being at the forefront of such innovation is inherent to our culture,” said Vatche Artinian, Co-Founder, Chairman and CEO of Calnetix. “We make a significant annual investment in research and development to design and manufacture high-speed permanent magnet motor generators, magnetic bearings systems and power electronics that assist our customers in implementing tomorrow’s most advanced energy efficient systems today. These two new patents reflect that ongoing commitment.”

The centrifugal impeller patent encompasses systems and methods for cooling related electric machines and systems, such as a motor or generator that is subjected to heating from a machine's internal losses, as well as heat transfer from surrounding structures, such as actuators or a prime mover that is connected to the machine. Methods using fans and air as well as other gas or liquid coolants provided from an external source have been used to provide cooling to electrical machines. However, in the context of high-speed electrical machines, such cooling methods do not provide a reasonable technical and cost-effective cooling solution. Calnetix has designed methods that reduce the pressure head needed to conduct a fluid to cool an electric machine via a route by which the fluid travels through it, and has combined this with the use of a more efficient centrifugal impeller that is integral to the high-speed shaft of the electrical machine. This cools high-speed electrical motors with greater efficacy.

Many industrial processes create heat as a byproduct, but this energy is often difficult to convert into a useful form so it is dissipated to the environment as waste heat. Calnetix’s second new patent covers an improved system to put this waste heat to economic use. Through the use of a high performance, high speed magnetic generator with an integrated expansion turbine and low loss magnetic bearings, electric power can be generated from the waste heat through fluid expansion. This invention was utilized in the design of Calnetix’s Carefree™ Integrated Power Module, the heart of its Thermapower™ waste heat recovery system, which is based on the organic Rankine cycle.

About Calnetix Technologies

Calnetix Technologies, LLC (“Calnetix”), headquartered in Cerritos, CA, is focused on Innovation That Drives Industries™. The company specializes in high-performance, high-speed motor generators and best-in-class advanced magnetic bearings and control systems. Calnetix’s patented, underlying technologies, which have been in use since the company’s inception in 1998, have made Calnetix a world leader in the design and production of high-speed machines. The company’s overall technology portfolio and system integration capabilities have led to development and production contracts with industry leaders and the start of many successful subsidiaries that focus on unique niche markets. For more information, please visit