"Singular Attention to the Advancement of Power Electronics Control Technology is the Key to Our Worldwide Reputation for Excellence"   --Frank Bourbeau, President

Enerpro became a dominant participant in the power electronics control industry upon its founding in 1983, and has maintained the distinction by staying on the forefront of technological advances. Its first achievement was its original product, the FCOG-6100. This three-phase thyristor firing board was the first to incorporate the company's proprietary digital LSI device, and its small size, low cost and reliability became an industry standard in North America. In 1985 Enerpro's president and founder Frank Bourbeau patented the company's second product, a controller that synchronizes wind turbine powered induction generators with the electric grid. Currently more than 2200 of these simple, effective controllers are used at wind farms in Europe, North America and Asia.

Enerpro entered the diesel-electric transportation industry in 1987 when General Motors Research Laboratories asked that its basic three-phase firing circuit be modified for variable frequency (VF) operation from three-phase AC power. GMR used Enerpro's VF converters for research on permanent magnet generator control and for use in a battery-powered vehicle. Enerpro has since supplied these converters to the Metro-North railroad locomotive retrofit project, the Southern California Metrolink passenger locomotive, freight locomotives in Australia, and to Siemens Energy and Automation for use in large mining trucks.

Enerpro has created products for use in a variety of industries. In 1998, Enerpro began manufacturing a 15 kW off-line converter/pre-regulator for GE Medical Systems' CAT Scanner at a rate of 40 units per month for four years. Another landmark product was a unique, power quality enhancing, twelve-pulse firing circuit that uses a six-phase, phase-locked loop to achieve 30° equidistant gating with excellent bandwidth. Designed in 1991, this circuit is now incorporated into uninterruptible power systems made by several well-known manufacturers.

In 1992, Enerpro began making its high performance, high efficiency battery charger for mass-transit electric vehicles including Santa Barbara (California) Shuttle, Blue Bird School buses, aircraft tugs and hybrid freight trucks. When Enerpro developed its Network Battery Monitor and Control board in 1996, users could monitor and charge VRLA battery strings through a network system and see records of each battery's state of charge and level of strength. They could also monitor each cell and control the charging current on a cell-by-cell basis. In 1999, Enerpro introduced a board combining thyristor phase control, regulation and snubber circuit functions to pre-charge the DC bus for AC motor drives and other IGBT inverter applications.

Today Enerpro maintains a network of worldwide contacts and provides electronics control expertise to long list of well-known corporations and research institutions.

Enerpro developed its first variable frequency locomotive rectifier product in 1988, supplying generator field exciters and 74 V power supplies for 10 Metro-North passenger locomotives. Similar units were later supplied to Siemens for use in 330 ton mining trucks. In 2008, the General Motors Electro-Motive Division selected Enerpro to supply the 74 V power supply for its new SD70ACe freight locomotive. This product is now in full production.

Recognizing the need for firing circuits at voltages higher than the usual 690 V (Europe) or 600 V (USA) limits, Enerpro developed firing circuits with fiber optic control and highly insulated gate pulse modules for use at voltages to 4.2 KVac when powered from a low voltage control transformer or to unlimited voltage when powered from a suitable insulated source of control power. The MVTB trigger board product is now in use in a 33 kV/60 MW NASA wind tunnel air heating system and has been tested in a linear motor control for launching naval aircraft. OEMs have also designed these boards into 4.2 KV transformer primary voltage controllers, medium voltage ac motor soft-starters and other medium voltage power control equipment.

Also in 2008, Enerpro began supplying a solid-state over-voltage crowbar switch for protection of the power electronics that control the doubly-fed induction generator of GE Wind’s 1.5 MW wind turbine. This year, working with TM GE Automation Systems, Enerpro developed a similar protection switch for the MW size doubly-fed induction motors that drive sewage treatment pumps. The first installation will be in the City of Montreal’s sewage treatment plant.


Enerpro's varied product list includes motor starters, battery monitoring and control systems, SCR assemblies, firing boards, snubber boards, regulator boards, test equipment, and controller packages. The company also manufactures fully integrated assemblies including power supplies, rectifiers, and battery chargers as well as control boards and firing boards for OEM applications. In addition, Enerpro is renowned for innovative packaging solutions that can endure harsh environments including high shock and vibration. It also uses ASIC (Application-Specific Integrated Circuit) technology to implement thyristor firing.


GE Wind, TM GE, Westinghouse, Xantrex, Liebert, Harris, Brookhaven Labs, Fermilab, Northrop-Grumman, General Atomics, Electro-Motive Diesel, Darrah Electric, FCX Systems, Oilfield Electric Marine, Rowan Companies, Basler, Magnaflux, Saminco, EBus, Powell Water, MKS ENI (China), Tackoh (China), PPI (U.K.), Moss Power (Norway), CBC (Thailand), Quasar Electron (Germany).

Diesel Electric Locomotive
Wind Power
Oil Well Drilling
Medical Electronics
Uninterruptible Power
Aircraft Ramp Power
Electric Bus
Battery Manufacturing

Recognizing the need for firing circuits at voltages higher than the usual 690 V (Europe) or 600 V (USA) limits, Enerpro developed firing circuits with fiber optic control and highly insulated gate pulse modules for use at voltages to 4.2 KVac when powered from a low voltage control transformer or to unlimited voltage when powered from a suitable insulated source of control power. The MVTB line of trigger boards is now in use in a 33 kV/60 MW NASA wind tunnel air heating system. These boards are also used in 4.2 KV transformer primary voltage controllers, medium voltage ac motor soft-starters and numerous other medium voltage applications.

For More Information, Please Contact:
Bob Theis
Enerpro, Inc.
5780 Thornwood Drive
Goleta, CA 93117
Phone: (800) 576-2114 (805) 683-2114
Fax: (805) 964-0798
Email: info@enerpro-inc.com