page_title: Motor–generator
hierarchical_section_title: Motor–generator
caption_attribution_description: Synchronous motor-generator set for AC to DC conversion (Rankin Kennedy, Electrical Installations, Vol II, 1909).jpg
context_page_description: 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 electrical loads from the electrical power supply line. Large motor–generators were widely used to convert industrial amounts of power while smaller motor–generators were used to convert battery power to higher voltages.
  Nowadays, motor–generators have largely been replaced by semiconductor devices. Examples include rectifiers for converting alternating current to direct current and inverters for converting DC to AC.
context_section_description: 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 electrical loads from the electrical power supply line. Large motor–generators were widely used to convert industrial amounts of power while smaller motor–generators were used to convert battery power to higher voltages.
  Nowadays, motor–generators have largely been replaced by semiconductor devices. Examples include rectifiers for converting alternating current (AC) to direct current (DC) and inverters for converting DC to AC.
caption: Motor-generator set for AC to DC conversion
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