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Frequency Converter Manufacturers

Last updated: January 2026

This directory lists 74 frequency converter manufacturers across the United States, from high-power industrial VFD suppliers to specialized rotary converter builders.

Buyers engage these manufacturers to solve a myriad of critical problems, including achieving precise speed regulation for industrial processes, integrating renewable energy sources with grid synchronization capabilities, enhancing energy efficiency through optimized motor control, and mitigating power quality issues like harmonic distortion. The right converter ensures stable operations, prevents equipment damage, and helps meet stringent energy efficiency targets.

The landscape of frequency converter manufacturers encompasses several distinct types. You'll find general-purpose VFD producers offering off-the-shelf solutions for common motor control needs, alongside highly specialized firms designing custom cyclo-converters for heavy-duty, low-speed applications such as cement kilns. Other specialists focus on grid-tie inverters for utility-scale solar or wind, while some excel in high-frequency converters for induction heating or aerospace ground power units, each distinguished by their core technological strengths and target markets.

Successful engagement with these suppliers requires buyers to come prepared with detailed specifications. This includes precise load characteristics, required input/output voltage and frequency ranges, desired control interfaces (e.g., Modbus, EtherCAT), environmental operating conditions (temperature, humidity, enclosure ratings), and specific compliance needs (e.g., UL, CE, IEEE 519). Suppliers, in turn, expect a clear understanding of the application's duty cycle and any unique power quality requirements like regenerative braking or active harmonic filtering.

A significant trend in this category is the increasing adoption of wide bandgap semiconductors like Silicon Carbide (SiC) and Gallium Nitride (GaN) in power stages. This shift allows for higher switching frequencies, leading to more compact designs, improved efficiency, and reduced common mode noise, enabling manufacturers to deliver higher power density converters suitable for space-constrained applications and demanding performance profiles.

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Company Directory

74 companies nationwide

Burlington, WI

Based in Burlington, WI, Visicomm Industries manufactures solid-state and rotary frequency converters for diverse applications. They offer solutions for 50Hz, 60Hz, and 400Hz power needs, serving industrial, avionics, and marine sectors. Products are available for purchase, monthly rental, or lease.

Camarillo, CA

ADVANCED Motion Controls designs and manufactures high-performance servo drives and motor controllers. They offer brushed and brushless motor drives, including custom solutions, utilizing digital and analog servo technology. Their products serve diverse industries like manufacturing, robotics, and medical healthcare.

Sources, DC

Adaptive Power Systems (APS), founded in 2003, manufactures and distributes a comprehensive line of AC and DC power equipment. The company specializes in AC power sources and frequency converters, like the APF1000 Series, which provides stable AC voltage over a wide frequency range, and the FC300 Series for global applications.

Las Vegas, NV

Based in Las Vegas, NV, Advanced Energy manufactures power conversion solutions designed to increase efficiency, reduce cooling requirements, and optimize form factors and weight. They offer products such as the NeoPower™ configurable dual-output 24 V/24 V module, serving various industrial and technology sectors.

Union City, CA

Based in Union City, CA, Advanced Power & Controls, LLC manufactures electronic and motor-generator based frequency converters, programmable power sources, and power line conditioning solutions. Serving aerospace, defense, industrial, and test & measurement sectors, they provide specialized power control equipment for critical applications.

Boise, ID

Based in Boise, ID, Aero Specialties manufactures and distributes industrial-grade aircraft ground support equipment (GSE). They provide 400 Hz AC and 28V DC ground power units, parts, and supplies. Serving corporate, FBO, MRO, military, airline, and general aviation customers, the company offers new, used, and refurbished GSE.

Based in Olive Branch, MS, Air+MAK Industries Inc manufactures Ground Power Units and Air Start Units for aircraft. They specialize in converting standard grid power to 400Hz AC and 28.5V DC, including Static Frequency Converters, for the aerospace and defense industries.

Miami, FL

Based in Miami, FL, AmePower specializes in the design, manufacturing, retrofit, and repair of customized high-power energy converters. They provide power electronics solutions for various industries, including rail, wind turbines, solar, energy storage, and electric vehicles.

South Beloit, IL

Based in South Beloit, IL, American Control Electronics manufactures electronic drives and controls. They offer a comprehensive line of AC Variable Frequency Drives (VFDs) and motor control solutions. Serving industrial, commercial, and vehicle markets, products are built in their UL508A certified US facility.

Fort Lauderdale, FL

Based in Fort Lauderdale, FL, ANG Converters manufactures advanced marine power systems. Specializing in shore power frequency converters, the company enables yachts to connect globally, adapting to any dockside voltage or frequency. They also provide isolation boost transformers, automatic voltage regulators, and marine power accessories for reliable electrical solutions.

Costa Mesa, CA

Based in Costa Mesa, CA, ASEA Power manufactures specialized shore power frequency converters for yachts and superyachts. Their US-made solutions stabilize operating frequency, suppress transient events, and isolate from voltage variations. These advanced converters also protect marine vessels from galvanic corrosion, ensuring reliable power connections.

East Aurora, NY

Astronics manufactures aircraft power conversion solutions for avionics, critical flight systems, radar receivers, and special mission systems. The company provides converters for projects like the NASA-Boeing X-66 Demonstrator, offering integrated solutions engineered from their array of power and connectivity technologies for aerospace and military applications.

Fort Lauderdale, FL

Based in Fort Lauderdale, FL, Atlas Marine Systems manufactures high-quality marine electrical distribution equipment and power management systems. They specialize in frequency converters for onboard shore power, dock power, and aircraft power applications, serving world-class yachts and other marine vessels.

Hauppauge, NY

Based in Hauppauge, NY, Behlman Electronics, Inc. designs and manufactures frequency converters, AC power supplies, and inverters. As an ISO 9001:2015 US manufacturer, they provide COTS and custom power conversion solutions for commercial, industrial, and military mission-critical applications, including aerospace, naval, and railroad signal industries.

Southern Nevada, HI

Benshaw Inc. manufactures applied motor controls, including low and medium voltage solid state motor control technologies. The company provides variable speed sensorless vector drives and soft starters for mission-critical applications in heavy/severe duty industries.

Duluth, GA

CE+T America, based in Duluth, GA, manufactures modular UPS and BESS systems for renewable energy management. The company specializes in delivering secure, uninterrupted power solutions using its proprietary modular inverters and Sierra multidirectional converters, designed to support long-term business reliability.

Wixom, MI

Based in Wixom, MI, Chroma USA manufactures advanced power electronics. The company provides programmable AC power sources, like the 61700 series, that deliver pure, 3-phase AC power with precise frequency control. They also offer regenerative charge/discharge test systems for applications such as AI server power and battery testing.

Crane Aerospace & Electronics manufactures highly engineered aerospace and defense solutions. The company provides electrical power solutions, including power converters and modular power products, for aircraft, eVTOL, and military vehicles. They also offer systems for sensing, landing, and thermal management.

Milpitas, CA

Based in Milpitas, CA, Digital Power Corporation manufactures robust power solutions for industrial and telecom systems. They specialize in frequency converters, offering reliable and efficient power conversion for critical applications. The company also produces AC-DC power supplies, DC-DC converters, and rectifiers, providing custom solutions.

San Bernardino, CA

Based in San Bernardino, CA, DSPM (Digital Signal Power Manufacturing) manufactures high-quality power products. Their offerings include frequency converters, emergency lighting inverters, battery backup power supplies, and voltage regulators. With experience since 1974, they serve various applications, including schools, health facilities, and data centers.

Simpsonville, SC

Based in Simpsonville, SC, EPC Power is a U.S.-manufactured inverter company, specializing in robust power conversion systems. They deliver resilient energy solutions for utility-scale, commercial, and industrial applications including AI, data centers, BESS, and solar PV installations.

Torrance, CA

Based in Torrance, CA, Eravant is a US manufacturer and supplier of frequency converters. The company specializes in providing solutions across a broad spectrum of frequencies, ranging from 9 to 170GHz, for various industrial applications.

Falcon Electric manufactures UL Listed industrial and military COTS UPS solutions and frequency converters. The company specializes in robust power protection, engineered for resilience and reliability, providing field-proven products for mission-critical infrastructure.

Saint Paul, MN

GE Vernova specializes in advanced energy conversion and storage systems, addressing the electrification needs of utilities and various industries. Their Power Conversion business manufactures sophisticated energy generation technologies, including components that facilitate frequency conversion, alongside electrification software solutions for a sustainable future.

El Segundo, CA

Based in El Segundo, CA, Glentek, Inc. designs and manufactures high-performance servo drives, servo motors, and motion control systems. Specializing in AC and DC servo drives that function as advanced frequency converters, they provide power electronics for machine tools, automation, robotics, and medical industries.

Hannibal City, MO

Hannibal PT manufactures static frequency converters, including the FC Series, engineered to deliver stable and accurate frequency for industrial motors, aviation systems, and sensitive electronics. The company also provides industrial UPS systems and battery chargers, catering to various industrial and commercial applications from its U.S. facility.

Poughkeepsie, NY

Based in Poughkeepsie, NY, Hitzinger manufactures Rotary Frequency Converters. They specialize in providing high levels of reliable, quality power across a full range of frequencies. Their robust converters are designed for industrial and commercial applications, ensuring consistent performance in demanding environments.

Orange, CA

Based in Orange, CA, IntelliPower, Inc. designs and manufactures rugged power protection solutions, including frequency converters, UPS systems, and power conditioners. Serving defense and industrial applications globally, the company specializes in mission-critical reliability for harsh environments. They offer a range of products designed for durability and performance.

KCC Scientific LLC manufactures high-precision voltage and frequency converters, providing global power solutions for diverse electronic devices. Their product line serves industrial, laboratory, audio, and home/hobby applications, offering solutions for 50/60Hz conversion needs.

Arcadia, CA

Based in Arcadia, CA, KGS Electronics designs and manufactures aerospace AC and DC solid state power conversion products. The company provides airborne 400Hz and 50/60Hz static inverters, voltage/frequency converters, and DC to DC power converters. They serve both civil and military aviation customers worldwide.

Warrior, AL

Based in Warrior, AL, Louis Allis manufactures and supplies Georator Power Frequency Convertors and Permanent Magnet Generators. The company also specializes in producing large and custom electric motors designed to meet rigorous industrial application standards.

Flemington, NJ

Based in Flemington, NJ, Magna-Power designs and manufactures rugged programmable power products, including AC power sources with variable frequency capabilities from 10 Hz to 5 kHz. The company utilizes vertically integrated manufacturing to build its power electronics in the USA.

MDS Power Inc. provides highly reliable AC/AC frequency converters. These power conversion units are available from 500VA to 3000VA, with outputs for 400Hz, 60Hz, or 50Hz, and support both single-phase and 3-phase applications, serving various industrial and commercial power needs.

Belmont, NH

Milpower Source, Inc. provides rugged, mil-grade power and networking solutions, specializing in power conversion products. Their offerings include DC-DC, AC-DC, and AC+DC-DC power supplies, along with DC-AC inverters. The company also supplies uninterruptible power supplies, power management solutions, and thermal management systems for air, ground, and sea applications.

South Beloit, IL

Minarik Drives, a brand of American Control Electronics (ACE), manufactures AC and DC motor speed controls and electronic motor control systems. Based in South Beloit, IL, the company designs custom power products for industrial, commercial, medical, and home automation markets, leveraging over 60 years of experience.

Based in Bethlehem, PA, Myers EPS manufactures advanced frequency converters. Their products feature digitally synthesized, crystal-controlled designs for ±0.1% accuracy, offering output capacities from 500VA to 50kVA. They specialize in providing reliable power conversion solutions for diverse industrial and commercial applications.

Placerville, CA

Based in Placerville, CA, Norden Group, operating as Norden Millimeter, specializes in the design and manufacturing of frequency converters, amplifiers, multipliers, and custom assemblies. The company serves industrial clients across military, aerospace, SatCom, and 5G/telecommunications industries.

Middletown, OH

NuWaves RF Solutions, based in Middletown, OH, designs and manufactures custom radio frequency (RF) and microwave solutions. They offer concept-to-production expertise for aerospace, military, and high-end industrial applications. Their product range includes amplifiers, filters, and multiplexers, addressing a broad spectrum of RF signal processing requirements.

Oshkosh AeroTech manufactures Jetpower converter products specifically designed for central system 400 Hz power applications, critical for aviation ground support. They provide robust technology solutions for airports, airlines, ground handlers, and military operations, ensuring reliable power and operational efficiencies.

Springfield, VA

Based in Springfield, VA, PD Power Systems, LLC specializes in designing and manufacturing mobile and ground power systems and distribution equipment for the U.S. Military. Their offerings include ground power units (GPUs) and power distribution centers that inherently integrate frequency conversion to support military aircraft.

East Dundee, IL

Based in East Dundee, IL, PE designs and manufactures American-made Variable Frequency Drives (VFDs), which are types of frequency converters. The company also produces control panels, regen resistors, and anti-sway systems, primarily serving crane and hoist applications. PE offers complete motion control solutions for industrial environments.

City Of Industry, CA

Based in City of Industry, CA, PSC Power Systems, Inc. designs and manufactures solid-state frequency converters, uninterruptible power systems, and transformers. They specialize in Series SFC3 Phase Static Frequency Converters for diverse industrial and commercial applications.

Los Osos, CA

Based in Los Osos, CA, Rantec Power Systems Inc. designs and manufactures engineered power and electronic systems. The company specializes in providing custom, reliable power conversion solutions for the world's most advanced defense and warfighting applications, utilizing its expertise in design, manufacturing, and testing.

Converters, DC

Energy Technologies, Inc. (ETI) manufactures rugged, high-reliability frequency converters for transforming power. Their products provide clean, regulated power at various hertz levels, serving critical applications in the defense, industrial, military, medical, and telecommunications sectors. ETI specializes in robust power conditioning and generation solutions.

Anaheim, CA

Based in Anaheim, CA, Sabina Motors & Controls designs and manufactures custom AC and DC drive systems, including Digital DC and AC Vector Drives. They offer frequency converters up to 6000 HP, serving industrial sectors like paper, plastic, rubber, steel, and food. The company also provides 24/7 service, repair, and panel building.

Garland, TX

Based in Garland, TX, Satellink, Inc. is a manufacturer of custom and state-of-the-art frequency converters, low noise amplifiers, and satellite receiving equipment. Established in 1982, the company supplies microwave products and subsystems for various applications.

Orange Park, FL

Based in Orange Park, FL, SmartD Technologies designs and manufactures advanced Variable Frequency Drives (VFDs). Their Clean Power VFD utilizes SiC MOSFET technology for ultra-low harmonics and a pure sine wave output. These filter-less VFDs are ideal for industries like utilities, agriculture, and mining, boosting efficiency and cutting energy costs.

Spacek Labs designs and manufactures high-performance microwave and millimeter-wave components. They specialize in frequency converters, mixers, amplifiers, and frequency multipliers. The company provides standard products and custom solutions for various RF, LO, and IF frequency requirements, serving industrial and commercial applications with solid-state technology.

Miamisburg, OH

Based in Miamisburg, OH, Staco Energy manufactures and supplies frequency conversion products for export product testing and international equipment operation. The company also offers a comprehensive suite of power solutions, including uninterruptible power supplies, emergency lighting inverters, and variable transformers, supporting critical operations in various industries.

SynQor, based in Boxborough, MA, manufactures high-performance power conversion solutions. The company provides AC-DC and DC-DC converters, EMI filters, power factor correction modules, and advanced 3-phase programmable power supplies for military/aerospace, industrial, and transportation markets.

Baton Rouge, LA

Based in Baton Rouge, LA, Tesco Controls is an original equipment manufacturer (OEM) that designs, manufactures, and integrates electrical and process control systems. They provide variable frequency drives (VFDs) for water, wastewater, transportation, and renewable energy applications, delivering innovative solutions to optimize operations.

Dallas, TX

Based in Dallas, TX, Unitron LP manufactures solid-state frequency converters and ground power units for aircraft. They specialize in 400Hz AC, 28VDC, and 270VDC power systems, including dual-output configurations. Serving military, commercial, and general aviation, Unitron provides robust power solutions in mobile, towable, and fixed installations.

Houston, TX

Based in Houston, TX, Wolong America manufactures electric motors and variable frequency drives (VFDs), which are frequency converters. The company provides motor and drive solutions for challenging industrial applications across sectors such as Oil & Gas, Pulp & Paper, Water & Wastewater, Mining, and Chemical Industries.

Charlotte, NC

Columbus McKinnon, headquartered in Charlotte, NC, specializes in intelligent motion solutions for automation, conveyance, lifting, and linear motion applications. The company provides systems and components, including advanced motor drives and controls, such as regenerative elevator drives designed to capture and reuse energy.

Switch, DC

Cross Technologies, Inc. designs and manufactures RF frequency converters and precision frequency sources. They specialize in multi-band block upconverters and downconverters, providing L-band to C-band, Ku-band, DBS, and Ka-band conversions. Their offerings include multi-channel solutions, IF amplifiers, and various protection switches for commercial and industrial applications.

Las Vegas, NV

DABICO specializes in the design and manufacture of innovative 400Hz power systems, including 400Hz e-GPUs and comprehensive 400Hz solutions. The company provides turnkey power and cooling solutions primarily for civil aviation, marine, seaports, and military applications.

Palmetto, FL

Based in Palmetto, FL, ITW GSE manufactures ground support equipment for the aviation industry. They specialize in Ground Power Units (GPUs) and Pre-Conditioned Air Units, offering flexible, silent, and reliable power solutions. The company focuses on enhancing gate economics and reducing the carbon footprint of airport operations.

St. Louis, MO

Based in St. Louis, MO, Nidec Drives (Control Techniques) is a division of Nidec Corporation, a global motor manufacturer. The company specializes in producing AC drives and other advanced motor control solutions for a wide range of industrial applications.

Huntersville, NC

BGSE Group manufactures expertly engineered Ground Power Units (GPUs) for military and commercial aviation. Based in Huntersville, NC, the company provides turnkey power solutions to airport terminals, ramps, and hangars. Their American-made GPUs protect sensitive avionics by delivering reliable, frequency-converted power for aircraft ground support.

Burlington, VT

Based in Burlington, VT, Dynapower manufactures power conversion solutions, including frequency converters, for industrial and commercial applications. The company engineers custom systems supporting sectors like hydrogen production, e-mobility, energy storage, and government, offering comprehensive service and support for its products.

Based in Andover, MA, Mercury Systems, Inc. designs and manufactures configurable microwave frequency converters for high-performance applications. The company provides advanced sensor processing and signal intelligence solutions, supporting missions for spacecraft, drones, and other critical aerospace and defense platforms.

Bergenfield, NJ

Based in Bergenfield, NJ, Nova Electric manufactures rugged solid-state frequency converters, UPS systems, and DC-AC inverters. Specializing in AC power conversion technology, their products are designed for harsh military, industrial, and commercial environments, offering high reliability and meeting strict environmental standards for diverse applications.

One-Cycle Control, Inc. manufactures advanced power electronics technology for high-performance, high-efficiency power conversion. They specialize in precise power conversion for DC and single/three-phase AC (50-1000Hz) applications, offering unidirectional, bidirectional, and 4-quadrant solutions from kW to MW.

Rapid City, SD

Based in Rapid City, SD, Phase Technologies manufactures power electronics, including Variable Frequency Drives and Digital Phase Converters. These solutions are specifically designed for irrigation and municipal water systems, offering motor control features and durability for field applications.

RAMAYES, INC. provides add-on modules, including 400Hz Frequency Converters and 28VDC DC Power Supplies. Specializing in equipment for aerospace manufacturers, hangars, air force bases, and passenger applications, they serve industrial and defense sectors.

Las Vegas, NV

Based in Las Vegas, NV, Start Pac manufactures portable and mobile ground power units and power supplies for aircraft, locomotives, military, and heavy machinery. Their battery-powered systems offer robust solutions for voltage-sensitive engine starting, inherently involving power and frequency conversion.

Honeywell Aerospace manufactures frequency converters designed for accurate signal translation across RF bands. These components are essential for aerospace and defense systems, ensuring high performance and reliability in critical aviation and military applications. The company provides advanced technological solutions for its demanding sector.

Fremont, CA

Based in Fremont, CA, Delta-Americas directly manufactures power electronics and industrial automation solutions. The company specializes in frequency converters, offering a comprehensive range of AC motor drives (VFDs) for precise motor control. They serve diverse industrial and commercial sectors.

Mason, OH

Festo USA designs and manufactures industrial automation solutions, including a comprehensive range of motors, servo drives, and frequency converters. With its North American production facility in Mason, Ohio, the company provides standard and custom solutions for various industries, delivering precision and efficiency in motion control systems.

Scotts Valley, CA

Based in Scotts Valley, CA, Heron Power Electronics Company develops industrial power electronics for the modern grid. They specialize in scalable power conversion solutions, including their Heron Link products for solar, energy storage, and data center applications, supporting the electricity sector's growth.

Radford, VA

Based in Radford, VA, Kollmorgen manufactures high-performance industrial drives, including servo and stepper drives. They also provide motors, automation platforms, and control systems. With US manufacturing facilities, Kollmorgen delivers advanced motion control solutions for machine builders and various industrial applications.

Melbourne, FL

L3Harris Technologies, Inc. manufactures advanced solid-state frequency converters designed for precise and reliable power delivery. The company's Air-Cooled, Solid-State Frequency Converter (ACSSFC) solution supports sophisticated weapon systems and missile defense initiatives for the US Navy and other defense applications.

Charleston, SC

Based in Charleston, SC, Leonardo DRS manufactures high-reliability military power supplies for marine and land platforms. Their advanced power conditioning solutions incorporate frequency converters, crucial for stable and compatible power across diverse defense applications. They specialize in robust, custom-engineered systems for demanding operational environments.

West Palm Beach, FL

Based in West Palm Beach, FL, MPG Solutions designs and manufactures custom RF and Microwave frequency converters. They provide full-service capabilities from concept to production, offering high-performance solutions across a broad frequency spectrum for diverse applications, including amplifiers, multipliers, and receivers.

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How to Choose a Company

  • Verify their capacity to handle specific power topologies like AC-DC-AC conversion with regenerative braking or direct cyclo-converter designs, especially for high-inertia loads in steel mills or mining.
  • For marine or offshore applications, ensure manufacturers hold DNV GL or ABS type approvals, and for grid-tie solutions, compliance with IEEE 1547 and local utility interconnection standards is non-negotiable.
  • Beware of suppliers quoting aggressively low prices without detailed discussions on harmonic mitigation (e.g., active filters, multi-pulse rectifiers) or common mode noise suppression, which often leads to costly post-installation issues and grid compliance fines.
  • Assess their expertise in your specific motor type – whether it’s induction, synchronous reluctance, or permanent magnet, as optimized control algorithms and sensorless vector control capabilities vary significantly between providers.

Frequently Asked Questions

How critical is harmonic distortion control when selecting a frequency converter, and what solutions should I look for?

Harmonic distortion control is critically important, as excessive harmonics can disrupt other sensitive equipment, overheat transformers, and lead to utility fines for non-compliance with standards like IEEE 519 or IEC 61000-3-12. When evaluating manufacturers, inquire about their built-in or optional mitigation solutions, such as multi-pulse rectifiers (6, 12, 18-pulse), passive harmonic filters, or advanced active front end (AFE) converters that actively cancel harmonics and provide near-unity power factor.

When should I consider a custom-engineered frequency converter versus a standard off-the-shelf VFD?

You should consider a custom-engineered frequency converter when your application has highly specific or extreme requirements that standard VFDs cannot meet. This includes very high power ratings (MW range), unique input/output voltage or frequency needs (e.g., 400 Hz for avionics), extreme environmental conditions (e.g., explosive atmospheres, deep-sea, high-temperature), specialized control algorithms for non-standard motor types, or stringent power quality and common mode noise suppression demands for sensitive equipment. Standard VFDs are typically cost-effective for common industrial motor control within their specified ranges.

What type of long-term support is essential for high-power frequency converters, particularly regarding IGBT module replacement or firmware upgrades?

For high-power frequency converters, robust long-term support is non-negotiable. Look for manufacturers offering comprehensive service contracts that include spare parts availability (especially critical components like IGBT modules), on-site technical support for troubleshooting and repairs, and clear policies for firmware updates and security patches. A responsive technical support team with specialized training in high-voltage systems and diagnostic tools for power electronics is paramount to minimize downtime and extend the operational life of your investment.

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