Allhydre MOB vs PRO: Which Solution to Choose for Your Industrial Needs?

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In this article, we will compare the power rectifiers from Comeca's Allhydre range: Allhydre MOB and Allhydre PRO. These solutions are designed to power various electrolyzer technologies, each with distinct features that make them suitable for different industrial needs.

Power Capacity and Modularity

Allhydre MOB  Allhydre PRO 
  • Power Capacity: Each module can reach up to 240 kW, with the possibility of installing them in parallel for higher power outputs.

  • Modularity: Available in several configurations ranging from 10 kW to 240 kW per module, offering great integration flexibility.

  • Power Capacity: Single unit up to 350 kW with the possibility of parallel operation up to 1050 kW.

  • Modularity: Designed to be customized according to specific needs, allowing for highly flexible configurations.

Voltage and Current Range

Max Output Voltage: 1000 V.
Allhydre MOB  Allhydre PRO 
  • Regulation: Current or voltage with varying voltage and current ranges for different needs.
  • Cooling: Primarily air-cooled, with options for water cooling.
  • Max Output Voltage: 700 V per single unit.
  • Regulation: Precise digital control of voltage, current, and power.
  • Cooling: Forced air cooling with bottom intake and top exhaust.

Efficiency and Performance

Allhydre MOB  Allhydre PRO 
  • Efficiency: Between 86% and 97%.
  • Ripple Rate: < 5% of nominal voltage, with the possibility of reaching < 1%.
  • Protections: Overcurrent, overvoltage, temperature, short-circuit.
  • Efficiency: > 95% at nominal operation.
  • THDi: < 7% for a single unit and < 3% for the complete system at nominal operating point.
  • Power Factor: Maintained close to 1 thanks to a two-stage technology.

Robustness and Reliability

Allhydre MOB  Allhydre PRO 
  • Standards: Compliant with EN 61000-6-4, EN 61000-6-2, EN 50178BT.
  • Protection Rating: IP34 on the front and IP21 on the rear, with the possibility of reaching IP55.
  • Standards: Compliant with IEC 62103 (EN 50178), EN 60146.
  • Protection Rating: Standard IP31, customizable up to IP54.
  • Resilience: Suitable for environments with ambient temperatures ranging from +5°C to +40°C.

Interface et control

Allhydre MOB  Allhydre PRO 
  • Control: Manual, with options for analog controls or fieldbus (Modbus RTU, Profinet, Modbus TCP/IP).
  • Human-Machine Interface: Options for touch interfaces and analog controls.
  • Control: Digital control for voltage, current, and power.
  • Communications: Customizable to customer needs with Profibus, Profinet, Modbus, and remote emergency stop.

Dimensions and Weight

Allhydre MOB  Allhydre PRO 
  • Dimensions: Varies according to power, for example, for a 60 kW module: L=432 mm, W=887 mm, H=920 mm.

  • Weight: Up to 500 kg for the largest configurations.
  • Dimensions: L x W x H = 800 x 700 x 2000 mm.

  • Weight: Approximately 500 kg

Conclusion

The Allhydre MOB and Allhydre PRO power rectifiers are both versatile solutions for powering electrolyzer technologies, but they differ in terms of power capacity, flexibility, efficiency, and control.

Allhydre MOB stands out for its modularity and ease of integration, while Allhydre PRO offers high performance with precise digital control and high energy efficiency. The choice between the two will depend on specific needs in terms of power, control, and operating environment.

 

For more technical details, you can refer to the full documentation of each product:
 Allhydre MOB and Allhydre PRO.
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