The Series RFC rotary frequency converter is designed to supply a source of reliable 50 or 60/400 Hz power to critical loads. Output voltage and frequency are maintained within published specifications by internal control sources. Critical load power is protected from utility transients and brownouts under normal operation.
The RFC consists of a common shaft motor-generator (M-G) set. The motor can be synchronous type or induction type (depending upon application) designed to meet the rated kVA requirements at the output. The generator is synchronous machine selected to meet the required output power and frequency.
A solid-state voltage regulator controls the generator output voltage providing ±0.5% steady-state regulation. When operated at rated motor speed, the frequency of the generator is controlled by the RPM of the motor. Thus, the output frequency will vary if the input frequency varies.
The PLC control logic for the rotary frequency converter will monitor the input voltage to the motor, and in the event of long term power failure that results in an under-frequency situation or a brownout that results in an overload of the motor, the logic will disconnect the load from the generator and shut down the unit.
In normal operation, the RFC acts as a rotating filter against utility transients. In general, it is 100% effective for outages less than approximately ½ second.
System Description
The RFC is a common shaft two bearing Motor Generator set which uses high-efficienct motor and a synchronous generator. A precision voltage regulator maintains the output voltage ±0.5%. The absence of brushes and slip rings in both motor and generator allows for virtually maintenance free operation.Enjoy you rotary frequency converter
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