Motor–generator
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A motor–generator is a device for converting electrical power to another form. Motor–generator sets are used to convert frequency, voltage, or phase of power. They may also be used to isolate electric
Aircraft radio modulator unit from the Second World War, showing a dynamotor (the black cylinder) which converts the aircraft's 24–28 V DC to 500 V DC for the transmitter. Dübendorf Museum of Military Aviation
An MG set used to provide a variable three phase AC voltage for an Electron Beam Welding Machine high voltage power supply.
Uninterruptible power supply
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An uninterruptible power supply or uninterruptible power source is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails. A UPS differs from
Motor–generator
…flywheel–generator systems have been commercialized for use in data centers as an adjunct or alternative to more conventional battery or generator-based uninterruptible power supplies (UPSs). Motor–generators may be used for various conversions including…
A large data-center-scale UPS being installed by electricians
Internal view of a solar inverter. Note the many large capacitors (blue cylinders), used to store energy briefly and improve the output waveform.
UPS output waveform (yellow) compared to normal 120 VAC 60 Hz power waveform (violet)
Battery cabinet