Frequency Converters

What is a Frequency Converter?

Regarding electrical power, Frequency is how many cycles per second an alternating current repeats. A Frequency Converter changes the number of Cycles per Second (Hertz). In the figure below the frequency coming out is 6 times the frequency going in. This has nothing to do with Voltage or Amperage. Only the frequency is changed. Conversely a higher frequency could be converted to a lower frequency.

How does a Frequency converter work?

Originally, Frequency Converters were mechanical. An engine or motor would be connected to a pulley or gear transmission to drive a generator faster or slower than the motor. Since Frequency is proportional to the generator speed, it would be increased or decreased by the pulley or gear ratio. This had limitations on speed, available ratios, and stability. If the motor or power line fluctuated, the generator output frequency fluctuated. Efficiency of power passing through the motor plus a generator was often low.

Today the Frequency Conversion is done electronically. Any type of power source can be changed to Direct Current (DC). Direct Current has no frequency, behaving like a battery. This DC can then be pulsed in tiny slices to create any frequency desired.

This Solid State Frequency Converter design is highly efficient, stabilized by a quartz crystal, and operates independent of input power fluctuations.

It requires minimal maintenance, no lubrication, or mechanical wear.

Uses for Solid State Frequency Converters

Variable Frequency Converters

Because the speed of a motor is proportional to Frequency, varying the frequency will vary the speed. This is valuable in many applications such as printing and conveyor systems. In air handling systems the economics are important. Reducing the fan speed by 2 reduces the fan pressure output by 4. (Square Law) At the same time the power used is reduced by 9. (Cube Law) The reduction of speed rather than closing a damper to reduce flow generates substantial energy savings.

Fixed Frequency Converters

Although variable speed has many uses, the need for a fixed frequency different from the utility is often a requirement. Many countries power grid operates on 60 Hertz while other countries operate on 50 Hz. Because of the global economy, manufactures producing for foreign markets must test their product at the frequency of the foreign country power. A Frequency Converter allows a factory in a 60 Hz country to test products on a 50 Hz power source, or the other way around. Renewable energy systems such as solar or wind need frequency converters to convert their power to utility grid frequency so that the power can be used by consumers. Frequency is a large factor in the design of power equipment. One relationship is that higher frequency requires less iron in motors and transformers. This means that operation above the 60 or 50 Hz utility power can save size and weight in equipment. This is particularly important for equipment that is flown or transported frequently. Aircraft and Military systems take advantage of this by being designed to operate on 400 Hz. This higher frequency, because equipment weighs less, allows more capacity for fuel and cargo. Utility grid power converted to 400 Hz is a critical part of Commercial and Military aviation globally. Other Military equipment such as missile systems and computers also utilize 400 Hz. Although various countries standardize on different grid frequencies, the aviation frequency requirement is the same everywhere.




Frequency Converters

45 KVA 400Hz Frequency Converter with 28VDC Option

The FCXtreme Series X45 400Hz solid state frequency converter provides FCX Systems' rugged and reliable performance in a rating ideally suited for point of use applications. It's small footprint and low profile allows for easy integration into the hangar, flight line, or other environment. An optional 28VDC output with 200A rating offers enhanced capability to meet your power needs.
  • RS232/485 communications interface, with optional RJ45 Ethernet or Wi-Fi connection capability.
  • True RMS Design for precision voltage control of non-linear loads
  • Integrated IGBT driver/power modules providing the most compact and reliable inverter design
  • Laminated bus design reduces internal transients
  • Detailed and user-friendly troubleshooting menus in addition to advanced diagnostic and logging system
  • Software options & upgrades
480VRMS +/- 10%, 60Hz, 3 phase 380VRMS +/- 10%, 50Hz, 3 phase 208 VRMS +/- 10%, 60Hz, 3 phase Other voltages available

60 - 180 KVA Horizontal

The FCXtreme Series provides reliable solid-state converters that are designed to provide aircraft ground power in "low profile" applications such as under passenger boarding bridges, in maintenance hangars, or on flight lines.
  • Individual phase regulation, improved efficiency, and lower input current distortion
  • Innovative, adaptive wave optimization and voltage stabilization
  • Laminated bus design eliminates transient voltage surges for high performance and increased reliability
  • Lightweight powder-coated steel enclosure with sealed electronics compartment superior to typical aluminum enclosures to reduce RF emissions.
  • Full-featured user interface with detailed troubleshooting
    menus added to the advanced diagnostic and logging system
60kva /60kw continuous, 90kva / 90kw continuous, 180kva / 180kw continuous

60-180 KVA Vertical

The FCXtreme Series provides reliable solid-state converters that are designed to provide 400Hz ground power with a small footprint in applications such as inside aircraft hangars, in electrical equipment rooms, or in maintenance shops.
  • Individual phase regulation, improved efficiency, and lower
    input current distortion
  • Innovative, adaptive wave optimization and voltage
    stabilization
  • Laminated bus design eliminates transient voltage surges for
    high performance and increased reliability
  • Lightweight powder-coated steel enclosure with sealed
    electronics compartment superior to typical aluminum
    enclosures to reduce RF emissions
  • Full-featured user interface with detailed troubleshooting
    menus added to the advanced diagnostic and logging system
  • High contrast LED display with 16-button keypad and separate
    standalone controls to ensure ease of use for most frequent
    functions
  • Standard RS485 Modbus communication and integration
    capability with available RJ45 Ethernet and Wi-Fi connection
    capability
60kva /60kw continuous, 90kva / 90kw continuous, 180kva / 180kw continuous

50 Hz and 60 Hz Frequency Converters

50 Hz and 60 Hz
  • Laminated bus design eliminates transient voltage surges for high performance and increased reliability
  • Insulated Gate Bipolar Transistor (IGBT) inverters controlled by drivers specifically designed to monitor the health and protect the transistors
  • Built-in failsafe modular system design ensures continuous operational dependability
  • Unique microprocessor controller guarantees long lasting performance under all conditions
Existing systems from 5kva-2000kva for various applications
 

Shore Power

The FCX Shore power solution dramatically reduces ship emissions as well as noise and vibration from ships in port . . . at a lower operating and maintenance cost than motor generator sets or running the ship’s motors.
  • Laminated bus design eliminates transient voltage surges for high performance and increased reliability
  • Insulated Gate Bipolar Transistor (IGBT) inverters controlled by drivers specifically designed to monitor the health and protect the transistors
  • Built-in failsafe modular system design ensures continuous operational dependability
  • Unique microprocessor controller guarantees long lasting performance under all conditions
60hz-50hz shore power up to 4000kva

Central Power System

FCX Systems Inc., a worldwide leader in solid-state 400Hz technology since 1987, continues to provide customers with state-of-the-art technology to meet the changing needs of the marketplace. FCX Engineers have designed an economical, compact 312KVA solid-state frequency converter intended for direct genset replacement or which might be utilized in compact settings. This high performance unit is indoor rated, constructed to operate under the most extreme situations. The unit requires minimal space while offering easy front and rear access to the unit for simple servicing. FCX has achieved high performance and increased reliability by using laminated bus integrated inverter modules. The performance characteristics are enhanced by micro-processor controllers with field programmable logic. This advanced design has long made the FCX converter the top converter in the world.
  • Higher efficiency than rotating converters
  • True RMS Design for precise voltage control of non-linear loads.
  • Integrated IGBT driver/power modules providing the most compact and reliable inverter design
  • Easy access for servicing
  • Built-in Line Drop Compensation
  • User-friendly controls
  • RS485 is standard communication interface
  • RS232 is optional upon request
  • 300% overload capacity (optional)
  • Clean, reliable power
60kva-312kva and above Central systems for all aircraft needs

Line Drop Compensators / Gate Box

The FCX Line Drop Compensator (LDC) is designed to cancel out the inductive voltage drop in 400Hz transmission lines. Voltage drop in the cables carrying 400 Hz power is much greater than if the same cable were carrying 60 Hz power. Left uncorrected, the aircraft may reject the power feed due to low voltage. The LDC is connected in series with the cable run to the 400Hz Service Point and improves voltage by cancelling out the voltage drop due to 400Hz AC reactance of the cable. The LDCs are available in ratings with up to 20% compensation capability.
  • Ratings Available - 15 KVA through 180 KVA
  • Efficiency - approximately 99%
  • NEMA 3R equivalent enclosure
  • Over boosting protection
  • DC power supplies for electronics and alarm
  • Switch gear interlocking capabilities
  • Cabinet grounding connection for bonding
  • Conformal coated circuit boards
  • Stackable
60kva-180kva Gates boxes with LDC. LDC's of various sizes for all applications
 

Contact Us