EN 50155 Compliant Power Electronics

Railway AC/AC Variable Frequency Drives (VFD)

High-reliability speed and torque motor regulation engineered for rolling stock HVAC, pumps, fans, and heavy-duty industrial automation.

  • EN 50155, EN 45545-2 & EN 61373 Railway Certified
  • Power Capacities up to 40 kW
  • 1-Phase & 3-Phase Custom Configurations
  • Designed & Manufactured in Barcelona, Spain
Advanced Motor Control Solutions

Railway VFDs: Moving Forward with High-Efficiency Power Conversion

Variable Frequency Drives (VFD) enable precise control and regulation of AC motor rotational speed and torque by dynamically altering input frequency and voltage levels. Placed between the grid or catenary auxiliary supply and the motor, VFDs are critical for modern rolling stock performance.

Electric motors drive essential onboard applications including HVAC compressors, ventilation fans, coolant pumps, and industrial machinery. By implementing Premium PSU AC/AC Variable Frequency Drives, railway vehicle manufacturers achieve optimum motor speed according to real-time cooling or pressure demands, drastically reducing energy consumption, acoustic emissions, and mechanical wear.

Railway AC/AC Variable Frequency Drive for Rolling Stock
Proven Railway Platforms

Engineered for harsh operating environments, high shock and vibration resistance, and seamless integration into rolling stock architectures.

VDX-10K Railway AC/AC Variable Frequency Drive
VDX-10K Series
10 kW VFD

VDX-10K Versatile Railway VFD

A compact, multi-purpose 10 kW AC/AC variable frequency drive specifically developed for train manufacturers and rolling stock HVAC integrators.

  • Nominal Power: 10 kW continuous rating
  • High-efficiency motor speed control for HVAC systems
  • EN 50155, EN 61373, and EN 45545-2 compliant
  • Robust thermal management & ruggedized mechanical housing
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TDS/TDX-3300 AC/AC Voltage and Frequency Changer
TDS/TDX-3300
3.3 kW Changer

TDS/TDX-3300 Voltage & Frequency Changer

A proven 3.3 kW AC/AC unit offering stable output voltage regulation and frequency conversion for sensitive onboard auxiliary loads.

  • Continuous output rating: 3.3 kW
  • Isolated and non-isolated topology options available
  • Clean pure sine wave AC output
  • High shock and vibration immunity for bogie/chassis mounting
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Engineering Excellence

Technical Capabilities for Custom VFD Development

With 40+ years of accumulated power electronics experience, Premium PSU designs bespoke AC/AC variable frequency drives matching exact customer dimensions, thermal envelopes, and electrical profiles.

  • High Power Capacity: Scalable topologies engineered up to 40 kW continuous output power.
  • Galvanic Isolation Options: Fully isolated or high-efficiency non-isolated architectures.
  • Flexible Phase Configurations: 1-phase to 3-phase, 3-phase to 1-phase, and 3-phase to 3-phase conversion options.
  • Pure Sine Wave Output: Guarantees smooth motor operation, reduced harmonic distortion, and minimal acoustic noise.
  • Input Line Regulation: Maintains precise output voltage across wide and fluctuating catenary auxiliary inputs.
  • Digital Bus Communication: Integrated CAN BUS protocol for real-time monitoring and parameter adjustments.
  • Full Normative Compliance: Engineered against EN 50155, EN 45545-2 (fire & smoke), and EN 61373 requirements.
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Premium PSU R&D laboratory and power electronics engineering team
System Benefits

Why Integrate AC/AC VFDs into Railway Systems?

Optimizing electric motor performance delivers tangible operational savings and extends hardware service life across rolling stock fleets.

Energy Conservation & Improved HVAC Efficiency

Precise Speed, Flow & Pressure Control for Pumps & Fans

Controlled Motor Soft-Start to Reduce Inrush Current

Thermal Stress Reduction & Extended Maintenance Cycles

Dynamic Drive Speed Matching to Real-Time Load Demands

Technical FAQ

Frequently Asked Questions

What are the primary applications for Railway AC/AC VFDs?
Our AC/AC variable frequency drives are engineered specifically for demanding rolling stock systems, such as passenger compartment HVAC compressors, cooling tower fans, auxiliary pumps, and motor speed regulators requiring compliance with stringent railway standards.
What power ratings and phase flexibility do you support?
We offer standard and tailored platforms up to 40 kW. Systems can be configured for 1-phase to 3-phase, 3-phase to 1-phase, or 3-phase to 3-phase conversion, guaranteeing stable voltage output regardless of input grid fluctuations.
Can Premium PSU customize VFD dimensions or cooling methods?
Yes. We specialize in custom power electronics. Our engineering team adapts chassis design, mounting points, IP sealing levels, and cooling methods (convection, forced air, or cold-plate conduction) to fit your exact vehicle space claim.
Which railway certifications are provided with the VFDs?
Units are designed, tested, and certified in accordance with EN 50155 (railway electronic equipment), EN 45545-2 (fire hazard protection), EN 61373 (shock and vibration), and EN 50124-1 (insulation coordination).

Discuss Your Railway VFD Requirements with Engineering Experts

Provide us with your input/output specifications, phase requirements, and mechanical envelope. Our technical team will recommend the ideal standard platform or outline a custom development path.

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