Specialty Electric Motors for Power Generation
Custom engineering, remanufacturing, and single-source repair services for critical AC & DC electric motors and turbine generators up to 20,000 HP.
Single-Source Electric Motor Solutions for Global Power Utilities
Louis Allis provides comprehensive design, manufacturing, rewinding, and field repair services for high-voltage AC and heavy-duty DC electric motors and generators. Operating under ISO 9001:2015 standards, our facilities support fossil fuel, hydroelectric, nuclear, and combined-cycle gas turbine power plants across North America, South America, Europe, Asia, and the Middle East.
With over 120 years of continuous manufacturing heritage, Louis Allis delivers field-proven motor designs tailored for extreme duty cycles, ambient thermal stressors, and emergency outage turnaround requirements.
ISO 9001:2015 & EASA-AR100
Adhering to strict international quality control and precision tolerances.
Up to 20,000 HP Capacity
Large frame AC synchronous, induction, and DC motor manufacturing.
24/7 Outage Response
Emergency rewinding, field machining, and rapid mobilization services.
Engineering Redesign
Uprating megawatt capability and power density in existing footprints.
Custom Technical Configurations
- High & Medium Voltage AC
- Large Armature DC Motors
- Explosion-Proof & ATEX
- MIL-SPEC Navy Windings
- Custom Shaft Extensions
- NEMA MG & IEEE Standards
Specialty Motors Designed for Power Plant Duty
Louis Allis manufactures and restores specialized motor systems engineered specifically to withstand continuous vibration, thermal cycling, and harsh environmental conditions.
Induced Draft (ID) & Forced Draft (FD) Fan Motors
Heavy-duty multi-speed and variable-frequency driven motors designed for high ambient temperatures and boiler airflow control systems.
Boiler Feed & Circulating Water Pump Motors
Vertical hollow shaft and horizontal induction motors custom-wound for continuous cooling tower and high-pressure water circulating lines.
Coal Pulverizer & Crusher Motors
High-torque, high-inertia motors built with reinforced mechanical frames to handle shock loads in material handling and fuel preparation.
Turbine Generators & Exciters
Precision remanufacturing and stator rewinding for steam, gas, and hydro turbine generators to ensure uninterrupted grid stabilization.
Synchronous Condensers
Specialty reactive power compensation equipment engineered to support voltage stability and grid inertia for utility substations.
Control, Instrument & Auxiliary Drives
Explosion-proof auxiliary motors, actuator drives, and exciter units supporting auxiliary plant operations and emergency backup generators.
Comprehensive Electrical & Mechanical Testing
To ensure maximum reliability before installation, Louis Allis subject every power generation motor to rigorous diagnostic protocols within our specialized ISO-certified test bay.
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EL CID & Core Loss Testing Detecting stator core interlamination insulation faults prior to coil installation.
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Partial Discharge & Corona Probe Analysis Evaluating high-voltage insulation integrity under simulated dielectric stress.
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Full-Load Vibration & Dynamic Balancing Eliminating harmonic frequencies and mechanical imbalance for extended bearing life.
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Surge, Hi-Pot & Polarization Index (PI) Testing Verifying phase-to-phase and phase-to-ground winding insulation safety limits.
Utility Client Deployments
Louis Allis motors and generators are installed at major utility installations worldwide, including key energy producers: