{"schemaVersion":1,"slug":"ansi-permanent-magnet-synchronous-generator","name":"ANSI/IEEE permanent-magnet synchronous generator symbol","kind":"symbol","abbreviation":"PMG","aliases":["IEEE permanent-magnet generator symbol","ANSI PMG symbol","HPW1G6"],"category":"microgrid-systems","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEEE / ANSI","Manufacturer"],"summary":"IEEE-oriented library form of a three-phase synchronous generator with permanent-magnet excitation, with reading notes.","description":["This entry covers the permanent-magnet synchronous generator as it appears in an IEEE-oriented drawing library. The machine has a magnet rotor and no field winding, so output voltage rises with speed and cannot be trimmed by an excitation regulator; voltage control is done by the converter or by the load.","Within IEEE-style one-line and schematic drawings the machine is a circle with the generator letter and a magnet indication, with three output leads. The block identifier quoted here is a vendor library name and only meaningful inside that library. This is a convention-specific lookup; the geometry is independently drawn and is not a certified reproduction of the standard graphic."],"readingNotes":["Expect a converter or rectifier immediately downstream; a permanent-magnet machine rarely connects directly to a fixed-frequency bus.","Read the vendor block name only within the library it belongs to."],"drawingChecklist":["State rated speed and voltage at that speed.","Show the converter or rectifier interface.","Cross-reference the counterpart IEC-style entry where both conventions are used."],"distinction":"A permanent-magnet generator has no field winding to regulate; a wound-field synchronous generator has an exciter and regulator.","facts":[{"label":"Convention evidence","value":"Autodesk IEEE Symbol Preview, Generators"},{"label":"Public vendor block name","value":"HPW1G6, VPW1G6 (Autodesk identifiers; not IEEE symbol numbers)"},{"label":"Standards context","value":"IEEE/ANSI 315-1975 covers diagram graphics"},{"label":"Artwork scope","value":"Original functional illustration; exact standard glyph and compliance are not certified"}],"references":[{"sourceId":"ansi-autodesk-6a9fa93b-3010-4274-ae51-20db3520999c","relevance":"Public IEEE-oriented generator category page listing the permanent-magnet synchronous generator block."},{"sourceId":"ieee-315","relevance":"Graphic-symbol standards context; not a source of reproduced artwork."}],"related":["permanent-magnet-synchronous-generator","ansi-three-phase-synchronous-generator","full-converter-wind-turbine-generator"],"artwork":"s28-ansi-permanent-magnet-synchronous-generator","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEEE / ANSI","form":"Autodesk IEEE-oriented 3 Phase Synchro Generator with Permanent Magnets functional form","counterpart":"permanent-magnet-synchronous-generator","reference":"Autodesk publishes this block under its IEEE Symbol Preview for generators. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted."},"plainEnglish":{"title":"What does ANSI/IEEE permanent-magnet synchronous generator mean?","introduction":"This entry covers the permanent-magnet synchronous generator as it appears in an IEEE-oriented drawing library. The machine has a magnet rotor and no field winding, so output voltage rises with speed and cannot be trimmed by an excitation regulator; voltage control is done by the converter or by the load.","example":"Within IEEE-style one-line and schematic drawings the machine is a circle with the generator letter and a magnet indication, with three output leads. The block identifier quoted here is a vendor library name and only meaningful inside that library. This is a convention-specific lookup; the geometry is independently drawn and is not a certified reproduction of the standard graphic.","drawings":"Expect a converter or rectifier immediately downstream; a permanent-magnet machine rarely connects directly to a fixed-frequency bus. Read the vendor block name only within the library it belongs to. A permanent-magnet generator has no field winding to regulate; a wound-field synchronous generator has an exciter and regulator.","terms":[{"name":"Winding","meaning":"A coil of conductor inside an electrical machine or transformer."},{"name":"Normally open / normally closed","meaning":"The contact state in the normal condition defined for the drawing."},{"name":"Signal","meaning":"Electrical information passed between devices, rather than necessarily the main power supply."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"Autodesk IEEE Symbol Preview — Generators","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-6A9FA93B-3010-4274-AE51-20DB3520999C.htm"},{"label":"IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams","url":"https://standards.ieee.org/ieee/315/515/"}],"detail":"IEEE-oriented library form of a three-phase synchronous generator with permanent-magnet excitation, with reading notes. A permanent-magnet generator has no field winding to regulate; a wound-field synchronous generator has an exciter and regulator.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/ansi-permanent-magnet-synchronous-generator","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/ansi-permanent-magnet-synchronous-generator.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"ansi-autodesk-6a9fa93b-3010-4274-ae51-20db3520999c","title":"Autodesk IEEE Symbol Preview — Generators","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-6A9FA93B-3010-4274-AE51-20DB3520999C.htm","type":"cad-reference","scope":"Verified public IEEE-oriented vendor catalogue. Block names identify vendor symbols, not IEEE standard symbol numbers. Linked only; graphics and CAD files are not redistributed. IEEE/ANSI 315-1975 is a historical graphics reference with Inactive-Reserved status; this page does not certify current standards compliance.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public IEEE-oriented generator category page listing the permanent-magnet synchronous generator block."},{"id":"ieee-315","title":"IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams","publisher":"IEEE Standards Association","url":"https://standards.ieee.org/ieee/315/515/","type":"standard","scope":"Graphic symbols and designation letters. IEEE lists this edition as Inactive-Reserved; it is a historical reference, not a claim of current compliance.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Graphic-symbol standards context; not a source of reproduced artwork."}]}