IEC 62747-2019 PDF

Full title and description

IEC 62747:2014 — Terminology for voltage-sourced converters (VSC) for high-voltage direct current (HVDC) systems, amended by Amendment 1 published January 24, 2019 (IEC 62747:2014/AMD1:2019). This standard defines standardized terms and definitions used for self‑commutated voltage‑sourced converters (VSC) applied in HVDC power transmission systems, with emphasis on implementations using IGBT and similar semiconductor devices.

Abstract

IEC 62747 provides a harmonized vocabulary for VSC‑based HVDC technology, covering names, definitions and descriptive terms for converter topology, control functions, components and operational modes. It is intended to ensure consistent terminology in documentation, specifications and communication among manufacturers, utilities and researchers working on HVDC VSC systems. Line‑commutated (current‑sourced) converter terminology is explicitly excluded.

General information

• Status: Valid / active (base publication 2014 with Amendment 1 issued in 2019).
• Publication date: Base publication: 17 July 2014; Amendment 1 publication: 24 January 2019.
• Publisher: International Electrotechnical Commission (IEC), TC 22 / SC 22F (Power electronics for electrical transmission and distribution systems).
• ICS / categories: 29.200; 29.240.99 (Rectifiers, converters; equipment for power transmission and distribution).
• Edition / version: Edition 1.0 (2014) with Amendment 1 (2019) — often cited as IEC 62747:2014 + AMD1:2019 or IEC 62747:2014/AMD1:2019.
• Number of pages: Base publication: 63 pages (edition 2014); Amendment 1: 9 pages; consolidated/CSV edition incorporates the amendment.

Scope

This International Standard defines terms for self‑commutated voltage‑sourced converters used for transmission of power by high‑voltage direct current (HVDC) systems. The text is primarily written with application to converters using insulated‑gate bipolar transistors (IGBTs) but may be applied to other self‑commutated semiconductor devices that can be turned on and off by control action. Line‑commutated and current‑sourced converters for HVDC are excluded from the scope.

Key topics and requirements

• Standardized terminology for VSC topologies, converter cells and valve arrangements.
• Definitions for control and modulation concepts used in VSC‑HVDC (e.g., PWM/modulation, converter control modes).
• Terms describing operational states, protection and fault‑related behavior of VSC systems.
• Definitions related to power transfer, reactive power control, and interface behaviour between AC and DC systems.
• Explicit exclusion of line‑commutated/current‑sourced HVDC converter terminology to avoid confusion.

Typical use and users

Used by HVDC project engineers, manufacturers of converters and power‑electronics equipment, transmission system operators, consultants and standards authors for consistent naming in specifications, technical reports, test procedures and interoperability documents. Also used in academic and R&D contexts when describing VSC‑HVDC concepts.

Related standards

Normative and informative references commonly associated with IEC 62747 include IEC publications used for symbols and electrical terminology (for example IEC 60027 series on letter symbols and IEC 60617 on graphical symbols) and other IEC/TC‑22 standards covering converters, power‑electronics performance and testing. The document is maintained by IEC TC 22/SC 22F which develops related HVDC and power‑electronics standards.

Keywords

VSC, HVDC, voltage‑sourced converter, IGBT, terminology, converter topology, power electronics, TC 22/SC 22F.

FAQ

Q: What is this standard?

A: IEC 62747 is an IEC International Standard that provides a controlled vocabulary and definitions for voltage‑sourced converters (VSC) used in HVDC transmission systems; it was first published in 2014 and amended in 2019.

Q: What does it cover?

A: It covers terminology for self‑commutated VSC technologies (topologies, control and operational terms) used for HVDC applications; it does not cover line‑commutated or current‑sourced converter terminology.

Q: Who typically uses it?

A: Manufacturers, transmission system operators, project and design engineers, test laboratories, standards writers and researchers working on VSC‑HVDC projects and documentation use this standard to ensure consistent terminology.

Q: Is it current or superseded?

A: The base edition is 2014 (Ed.1.0) with Amendment 1 published 24 January 2019; the consolidated/csv edition including the amendment is available. The IEC webstore shows the publication and the amendment as the active/valid record and indicates stability information for the publication (stability date listed by IEC). Users should check the IEC webstore or their national standards body for the latest status before relying on the document for compliance.

Q: Is it part of a series?

A: It is part of the family of IEC standards developed by TC 22/SC 22F on power electronics for transmission and distribution — many related documents address testing, performance and symbols for converters and power‑electronics equipment. IEC 62747 is focused specifically on terminology within that family.

Q: What are the key keywords?

A: VSC, HVDC, voltage‑sourced converter, IGBT, converter topology, modulation, control, terminology.