A recent trend in nuclear power plant upgrades has been the replacement of the motor-generator (MG) sets that drive the reactor circulating pumps with variable-frequency drives (VFD). Siemens ...

Rectifier/converter: One of the three ... Sequenced correctly, PWM outputs motor current in a nearly perfect sinusoidal waveform. 6. Carrier frequency: In PWM-based VFDs, the rate at which output ...

Here are the power and driver boards that [Miceuz] designed to control a three-phase induction motor. This is his first time building such a setup and he learned a lot along the way. He admits it ...

A device called a converter ... generator is “fully inverted” meaning that 100% of the generated energy passes through a power electronics system which converts it to grid voltage and frequency.