Snowman Group

The OA072 is a vehicular fuel-cell twin-screw air compressor developed by Snowman based on Swedish OPCON Autorotor technology. It adopts a twin-screw profile design to supply clean, high-pressure-ratio intake air to the fuel-cell stack. The unit integrates a permanent-magnet synchronous motor for high-speed operation, with a compact, lightweight build. It meets the automotive IP67 ingress-protection standard and is designed for a service life exceeding 6000 hours. The compressor achieves an adiabatic efficiency of up to 75% (above 60% under most operating conditions), with reliability validated by long-term European demonstration projects.

Type: twin-screw fuel-cell air compressor; Flow range: approx. 5-400 g/s (modular series coverage); Adiabatic efficiency: up to 75%, >60% under most conditions; Design life: >=6000 h; Ingress protection: IP67 (automotive standard); Drive motor: permanent-magnet synchronous motor, high speed; Core component: screw rotor profile (from Swedish SRM); Supply: powered by matched high-speed inverter (customized per system).

• Hydrogen fuel-cell buses
• Hydrogen fuel-cell passenger cars
• Hydrogen fuel-cell commercial vehicles / heavy trucks
• Stationary fuel-cell power systems

The OA075 is a vehicular fuel-cell twin-screw air compressor from Snowman's OPCON Autorotor brand. Over 50% of hydrogen fuel-cell air-supply systems in global on-road use originate from Autorotor. It uses a twin-screw profile to deliver high-pressure-ratio clean air to the stack, driven by a permanent-magnet synchronous motor for high-speed, lightweight operation. The product meets the automotive IP67 standard with a design life beyond 6000 hours. Its adiabatic efficiency reaches 75% (above 60% in most regimes), with reliability proven through European demonstration fleets.

Type: twin-screw fuel-cell air compressor; Flow range: approx. 5-400 g/s (modular series coverage); Adiabatic efficiency: up to 75%, >60% under most conditions; Design life: >=6000 h; Ingress protection: IP67 (automotive standard); Drive motor: permanent-magnet synchronous motor, high speed; Core component: screw rotor profile (from Swedish SRM); Supply: powered by matched high-speed inverter (customized per system).

• Hydrogen fuel-cell buses
• Hydrogen fuel-cell passenger cars
• Hydrogen fuel-cell commercial vehicles / heavy trucks
• Stationary fuel-cell power systems

The OPCON Autorotor twin-screw fuel-cell air compressor series, developed by Snowman's OPCON Autorotor, is a family of air-supply products for vehicular fuel cells. The modular twin-screw design covers a mass-flow range of approx. 5-400 g/s and meets varied flow and pressure needs by sharing most components. Available models and their mass flow (g/s): OA072(50), OA075(100), OA000(52), OA102(54), OA103(60), OA104(75), OA1050(100), OA207(61), OA208(71), OA313(32), OA3150(25), OA417MX(280), OA420MX(320), OA422MX(350), OA424MX(400). In development since the 1990s, the series has supplied Ballard and automakers including GM, Toyota, Mercedes-Benz, Honda and Ford. It uses a permanent-magnet synchronous, high-speed motor in a compact, lightweight, IP67-rated package with adiabatic efficiency up to 75%.

Type: twin-screw fuel-cell air compressor series; Mass-flow range: 5-400 g/s; Model selection and mass flow (g/s): OA072(50), OA075(100), OA000(52), OA102(54), OA103(60), OA104(75), OA1050(100), OA207(61), OA208(71), OA313(32), OA3150(25), OA417MX(280), OA420MX(320), OA422MX(350), OA424MX(400); Adiabatic efficiency: up to 75%, >60% under most conditions; Design life: >=6000 h; Ingress protection: IP67; Motor: permanent-magnet synchronous, high speed; Design: modular, most parts shared across displacements; R&D: 28 years of screw-profile expertise.

• Hydrogen fuel-cell coaches / buses
• Hydrogen fuel-cell passenger cars
• Hydrogen fuel-cell commercial vehicles and heavy trucks
• Hydrogen fuel-cell demonstration projects
• Stationary fuel-cell power generation

Snowman's hydrogen circulation pump is built on OPCON Autorotor and Swedish SRM twin-screw rotor-profile technology for recirculating and recovering hydrogen in the fuel-cell stack. It shares the high-speed drive-motor and high-speed inverter platform with the fuel-cell air-supply system, giving a compact, highly reliable package. The twin-screw architecture enables efficient hydrogen circulation and reduces hydrogen loss. It pairs with Snowman's fuel-cell air compressors to form a complete hydrogen supply and circulation solution for vehicular fuel-cell systems.

Type: twin-screw hydrogen circulation pump; Configuration: twin-screw (rotor profile from Swedish SRM); Drive motor: high-speed permanent-magnet synchronous motor (in-house developed); Controller: dedicated high-speed inverter; Shared platform: motor/inverter common with fuel-cell air compressor; Standard: automotive industry standard; Flow/pressure: customized per fuel-cell system model.

• Hydrogen fuel-cell buses
• Hydrogen fuel-cell passenger / commercial vehicles
• Hydrogen loop of fuel-cell systems
• Stationary fuel-cell systems

Snowman's fuel-cell air-supply system, based on Swedish OPCON Autorotor technology, integrates a twin-screw air compressor, a high-speed permanent-magnet synchronous motor, a dedicated inverter, a controller and piping into a single package that delivers clean, high-pressure-ratio, precisely metered intake air to the fuel-cell stack. Its modular design adapts to fuel-cell engines of different power levels, covering passenger cars, commercial vehicles and stationary power, validated by long-term European demonstration projects.

System composition: twin-screw compressor + high-speed PMS motor + dedicated inverter + controller + intake/exhaust piping; Mass-flow range: 5-400 g/s (by selection); Adiabatic efficiency: up to 75%; Design life: >=6000 h; Ingress protection: IP67; Control: integrated Vi-adjustment interface, CAN communication; Compatible with: passenger / commercial / heavy-duty / stationary fuel-cell systems.

• Fuel-cell engine integration
• Hydrogen fuel-cell buses
• Hydrogen fuel-cell heavy trucks
• Stationary fuel-cell power systems

Snowman's hydrogen fuel-cell engine (fuel-cell power system) uses externally supplied hydrogen and air (oxygen) as reactants, generating electric power through electrochemical reactions at the membrane electrode, with pure water as the only emission. As the core assembly of a fuel-cell powertrain, it can be matched to passenger cars, commercial vehicles and stationary power, forming a complete hydrogen-energy powertrain solution together with Snowman's fuel-cell air compressors and hydrogen circulation pumps.

Type: hydrogen fuel-cell engine (fuel-cell power system); Reactants: hydrogen + air (oxygen); Emission: pure water; Key components: fuel-cell air compressor, hydrogen circulation pump, air-supply system; Form: vehicular powertrain and stationary power; Specific rated power / voltage: customized per system model.

• Hydrogen fuel-cell passenger cars
• Hydrogen fuel-cell commercial vehicles / coaches
• Hydrogen fuel-cell heavy trucks
• Stationary fuel-cell power generation