# Neutral-point-clamped inverter

Canonical URL: https://eloragrid.ai/symbols/neutral-point-clamped-inverter
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: NPC
Drawing use: Schematic, SLD
Reference families: Manufacturer

A multilevel switching arrangement using the documented split DC link and neutral-point clamping paths.

## What it represents

A multilevel switching arrangement using the documented split DC link and neutral-point clamping paths.
On a schematic, identify the split-link midpoint, clamping devices and phase-leg switches and trace the phase output and DC-link balancing/control references. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
NPC identifies a specific multilevel arrangement; active-NPC variants replace parts of the clamping arrangement and need separate device documentation.
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.

## How to read it

- Identify the split-link midpoint, clamping devices and phase-leg switches.
- Trace the phase output and DC-link balancing/control references.

## Information to show or reference

- Label the split-link midpoint, clamping devices and phase-leg switches.
- Cross-reference the phase output and DC-link balancing/control references.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.

## Important distinction

NPC identifies a specific multilevel arrangement; active-NPC variants replace parts of the clamping arrangement and need separate device documentation.

## Facts

- Common schematic mnemonic: NPC — descriptive only; project/device documentation defines reference designations.
- Terminal / interface focus: The split-link midpoint, clamping devices and phase-leg switches
- Artwork scope: Original conceptual topology block; not a complete switch-level circuit.

## Public references

- [Multilevel NPC converter application context](https://www.infineon.com/product-information/sic-modules-for-ups-design-and-efficiency-guide) — Infineon Technologies. Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.