Request a Quote


1 KVA – 500 KVA

Static Frequency Converters

Static Frequency Converters (SFC) convert supply frequency to a frequency that the desired load accepts for proper functioning. Typical applications are 50Hz to 60Hz or 83.3Hz conversion and 50Hz to 400Hz conversion, although conversion can be done to any frequency.

Designed based on the digital double conversion technology employing PWM power electronic technique using IGBTs. A rectifier converts the input frequency to DC and an inverter converts the DC to the required output voltage & frequency. A battery bank can be connected to the DC to achieve availability of power during short or long-term supply disruptions or severe disturbances. Static DSP based technology achieves high current capacity, storage efficiency and reliability with lower mean time to repair and running costs than traditional rotary technology.

We can also deliver aircraft Ground Power Unit (GPU) consisting of these SFCs which are practically a mobile unit that powers or starts aircraft whilst on the ground. Ground Power Units usually provide either 28V DC or 115V, 400Hz AC, although certain aircraft will require a more specialised power derivative. 


*Please also refer to our DC rectifier catalog for 28V DC rectifier supply units.

Salient features

• Static IGBT based Digital PWM Technology
• DSP based user friendly diagnostics and controls
• High efficiency
• Multiple output voltage options available

• Low input harmonic distortion
• Input unity power factor
• Indoor or outdoor enclosures
• Battery backup options available

We’ll be glad to hear from you