New electric air compressor technology can double the power output of hydrogen fuel cells

    Recently, British company Aeristech announced that it is developing a new electric air compressor technology, which can double the output power of hydrogen fuel cells. This can not only help automakers improve the overall performance of vehicles, but also make the appearance of fuel cells more compact, thereby further improving the packaging process and overall weight of fuel cells.

       Aeristech's electric air compressor uses an aluminum turbocharger, and the processing tolerance of the compressor meets the tolerance requirements of mass production in the automotive industry. In addition, the compressor is directly connected to a high-speed motor without using a traditional gearbox mechanism. The design structure of the new electric air compressor shows that it is quite different from the traditional Roots pump and screw pump supercharger in terms of structural design.
      
    In addition, Aeristech has also developed a 10-kilowatt fuel cell air compressor with the funding support of the "Innovation UK" organization (formerly the UK Technology Strategy Board). In this project, Imperial College London is responsible for the design of the compressor, which can withstand high pressure for a long time under high flow conditions. In addition, the British Intelligent Energy company also participated in the design of the above project, mainly responsible for the integration of the motor starter with the fuel cell and the fuel cell controller during the system performance test. The
      
    output voltage of the fuel cell is generally in a fluctuating state, so the conventional motor compressor generally needs to be equipped with an intermediate voltage regulator to enable the motor compressor to provide a stable pressure value, which will increase the power consumption of the system. Aeristech's motor control technology can output a stable constant torque, so the pressure output of its motor compressor will not be affected by the size of the intake air volume and the input voltage fluctuation, which means that it can be directly connected to the fuel cell for power supply.
      
    Aeristech's products also include a 20-kilowatt high-performance compressor. The control voltage of the compressor is 400 volts, which is mainly used for system testing and demonstration.
      
    Aeristech has also developed and launched an innovative permanent magnet switch structure. The application of this permanent magnet switch structure can greatly improve the power density of the motor. Aeristech said that the power density of its motor using a permanent magnet switch structure is the largest on the market. Aeristech's motor control strategy is to control the communication signal separately from the power control signal. This method can not only reduce the cost of many key switch components, but also ensure accurate high-speed control.
      
    The new electric air compressor technology constitutes Aeristech's most basic product line, which mainly includes electric drive superchargers, pure electric turbochargers, fuel cell air superchargers and turbine generators. Whether it is a simple bearing or a complex compressor impeller, Aeristech is fully responsible for the design, testing and development of all its products.