{"schemaVersion":1,"slug":"three-phase-voltage-source-inverter","name":"Three-phase voltage-source inverter","kind":"symbol","abbreviation":"3PH-VSI","aliases":["three phase inverter bridge","three leg voltage source inverter"],"category":"microgrid-systems","drawingTypes":["Schematic","SLD"],"referenceFamilies":["Manufacturer"],"summary":"A three-leg bridge producing the documented three-phase output from a DC-link source.","description":["A three-leg bridge producing the documented three-phase output from a DC-link source.","On a schematic, identify the DC-link rails, three switching midpoints and phase labels and trace the three-phase load/connection and driver/control circuits. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.","The stage topology does not establish whether the system is grid forming, grid following or suitable for a particular connection.","The preview is a conceptual topology reference rather than a complete power-stage circuit. Switching sequences, magnetic design, component selection and control/protection details belong in the equipment design documentation."],"readingNotes":["Identify the DC-link rails, three switching midpoints and phase labels.","Trace the three-phase load/connection and driver/control circuits."],"drawingChecklist":["Label the DC-link rails, three switching midpoints and phase labels.","Cross-reference the three-phase load/connection and driver/control circuits.","Add the selected device or circuit documentation revision, power/reference connections and project signal convention."],"distinction":"The stage topology does not establish whether the system is grid forming, grid following or suitable for a particular connection.","facts":[{"label":"Common schematic mnemonic","value":"3PH-VSI — descriptive only; project/device documentation defines reference designations."},{"label":"Terminal / interface focus","value":"The DC-link rails, three switching midpoints and phase labels"},{"label":"Artwork scope","value":"Original conceptual topology block; not a complete switch-level circuit."}],"references":[{"sourceId":"pub-electronics-infineon-inverter","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}],"related":["three-phase-sixpack-power-module","power-converter"],"artwork":"electronics-power-three-vsi","publishedOn":"2026-10-14","updatedOn":"2026-10-14","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/three-phase-voltage-source-inverter","illustration":{"url":"https://eloragrid.ai/library/illustrations/three-phase-voltage-source-inverter.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pub-electronics-infineon-inverter","title":"Bidirectional three-/single-phase AC/DC PFC and inverter application note","publisher":"Infineon Technologies","url":"https://www.infineon.com/assets/row/public/documents/24/42/infineon-ac-dc-pfc-11-kw-high-efficiency-high-density-bidirectional-three-single-phase-inverter-applicationnotes-en.pdf","type":"manufacturer","scope":"Public application context for actively switched AC/DC and inverter stages. Independent miniature topology illustrations have no copied product-specific values, wiring layouts or control implementation.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}]}