{"id":10509,"date":"2015-10-31T22:37:01","date_gmt":"2015-11-01T05:37:01","guid":{"rendered":"http:\/\/cafe.foundation\/blog\/?p=10509"},"modified":"2015-12-13T22:19:50","modified_gmt":"2015-12-14T05:19:50","slug":"turbocharged-fuel-cells","status":"publish","type":"post","link":"http:\/\/cafe.foundation\/blog\/turbocharged-fuel-cells\/","title":{"rendered":"Turbocharged Fuel Cells"},"content":{"rendered":"

The Engineer<\/em>, a British publication, reports on a turbocharger for fuel cells<\/a>.\u00a0 Because a fuel cell is a cross between a combustion engine and an electric motor, the concept of pushing extra air through the fuel cell to increase power is similar to that of turbocharging a regular two- or four-stroke engine.\u00a0 The publication says this could double the output of a hydrogen fuel cell.<\/p>\n

Like other combustion engines, a fuel cell can be limited by the airflow entering, that supply limiting their ability to release positively-charged hydrogen ions.<\/p>\n

Bryn Richards, CEO of Aeristech, explains, \u201cOur proprietary high speed motor and control technology allows us to deliver air at a much higher pressure [than existing systems].\u00a0 No other motor control arrangement is able to deliver at this pressure with such a high efficiency.\u201d<\/p>\n

\"Aeristech's<\/a>

Aeristech’s electric turbocharger\/compressor has little external difference from a conventional automotive turbocharger<\/p><\/div>\n

Without a lot of detailed information from Aeristech<\/a>, The Engineer<\/em> suggests the system uses a \u201csophisticated control system capable of maintaining a very consisten torque output.\u00a0 This allows the motor \u201cto be powered directly by the fuel cell without the use of an intermediate voltage regulator,\u201d and to \u201ccut the mass of the complete motor, compressor and control unit package by as much as 70 per cent.\u201d<\/p>\n

Richards says \u201cthermal management issues\u201d would keep traditional motors from operating at \u201csuch high continuous power levels.\u201d<\/p>\n

Hydrogen\u2019s high energy density, conversely, enables those same continuous high levels.\u00a0 Stored as a liquid fuel, the hydrogen combines with the oxygen in the air to combust.\u00a0 Aeristech claims their controlled air compressors \u201ccan deliver a constant air pressure regardless of changes in air flow or variation in input voltage, allowing them to be powered directly by the fuel cell without intermediate voltage regulation.\u201d<\/p>\n

\"Set<\/a>

Set theory type diagram shows overlapping conventional gasoline, battery electric, and fuel cell electric vehicles. \u00a0Note clean emissions from fuel cells, batteries and the similar range between conventional gasoline and fuel cell vehicles<\/p><\/div>\n

They claim their 20 kilowatt air compressor has a performance map and 400-Volt control architecture for a fuel cell powered vehicle, and is able to supply such compressors \u201cfor testing and demonstration purposes,\u201d being uniquely suited for such applications.\u00a0 The motor maintains constant torque and air pressure regardless of volume or variation in voltage drawn in directly from the fuel cell.<\/p>\n

Results from a 10kW Aeristech Fuel Cell Compressor currently under test on fuel cell stacks should be available for review by the end of the year. \u00a0In 2011 Aeristech was one of 14 UK companies funded by Innovate UK to study the development and feasibility of low-carbon vehicle technology.<\/p>\n

In 2011 Aeristech was one of 14 companies funded by Innovate UK to carry out feasibility studies into the development of disruptive low-carbon vehicle technology, resulting in the 10 kW compressor now under test.<\/p>\n

With seemingly every major automobile company advancing development of fuel-cell cars, doubling their performance would undoubtedly be of great interest to makers and consumers, and even more so to potential aircraft designers.\u00a0 Clean air and longer range possible with current batteries would be highly desirable.<\/p>\n