Fuel cell systems have a recirculation system for unused hydrogen on the anode side. An active blower is often used for this purpose, which must function safely and efficiently even at high concentrations of hydrogen. To ensure this, Pierburg has developed a hydrogen recirculation blower (HRB) based on a side-channel blower and without dynamic sealing elements to ensure ultimate hydrogen tightness over lifetime.
The hydrogen recirculation blower is available in both high- and low-voltage variants. The blower can start from cold and has excellent NVH characteristics. It has a rating of 0.7 to 2 kilowatts or up to 400 watts in the low-voltage version. It is driven by a brushless motor with sensorless control; LIN / CAN bus communication and diagnostic functions are also available.
The Chinese congress is a technology forum focusing on trends in the automotive industry such as New Energy Vehicles (NEV), Future Mobility and lightweight engineering. It is organized by the Institut für Kraftfahrzeuge (ika) of RWTH Aachen University and the Vogel Automotive Media Group. The congress, which has been held in Shanghai since 2008, has become an important meeting-point for experts in automotive technology and is of growing significance.