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Converters

Semiconductor Device Standards also cover devices outside of those large series. Smaller IEC series and those from other standards developing organizations provide further information about other devices using semiconductors, such as HVDC systems, switchgear/controlgear, X-ray machines, fiber optics, and others.

IEC 62747 Ed. 1.0 b:2014

Terminology for voltage-sourced converters (VSC) for high-voltage direct current (HVDC) systems

IEC 62747:2014 defines terms for the subject of self-commutated voltage-sourced converters used for transmission of power by high voltage direct current (HVDC). The standard is written mainly for the case of application of insulated gate bipolar transistors (IGBTs) in voltage sourced converters (VSC) but may also be used for guidance in the event that other types of semiconductor devices which can both be turned on and turned off by control action are used. Line-commutated and current-sourced converters for high-voltage direct current (HVDC) power transmission systems are specifically excluded from this standard.

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IEC 62751-2 Ed. 1.0 b:2014

Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems - Part 2: Modular multilevel converters

IEC 62751-2:2014 gives the detailed method to be adopted for calculating the power losses in the valves for an HVDC system based on the "modular multi-level converter", where each valve in the converter consists of a number of self-contained, two-terminal controllable voltage sources connected in series. It is applicable both for the cases where each modular cell uses only a single turn-off semiconductor device in each switch position, and the case where each switch position consists of a number of turn-off semiconductor devices in series (topology also referred to as "cascaded two-level converter"). The main formulae are given for the two-level "half-bridge" configuration but guidance is also given as to how to extend the results to certain other types of MMC building block configuration.

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IEC 60146-1-1 Ed. 4.0 b:2009

Semiconductor converters - General requirements and line commutated converters - Part 1-1: Specification of basic requirements

"IEC 60146-1-1:2009 specifies the requirements for the performance of all semiconductor power converters and semiconductor power switches using controllable and/or non-controllable electronic valve devices. It is primarily intended to specify the basic requirements for converters in general and the requirements applicable to line commutated converters for conversion of a.c. power to d.c. power or vice versa. Parts of this standard are also applicable to other types of electronic power converter provided that they do not have their own product standards. This fourth edition constitutes a technical revision and introduces five main changes: - re-edition of the whole standard according to the current directives; - correction of definitions and addition of new terms, especially terms concerning EMC, harmonic distortion and insulation co-ordination; - the service condition tolerances have been revised according to the IEC 61000 series; - the insulation tests have been revised considering the insulation co-ordination; - addition of three annexes. "

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IEC 60146-2 Ed. 2.0 b:1999

Semiconductor converters - Part 2: Self-commutated semiconductor converters including direct d.c. converters

Applies to all types of semiconductor inverters of the self-commutated type and semiconductor convertors which contain at least one part of a self-commutated type, including direct a.c. convertors and d.c. convertors for all applications.

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IEC 61148 Ed. 2.0 b:2011

Terminal markings for valve device stacks and assemblies and for power conversion equipment

"IEC 61148:2011 is applicable to the terminal markings for the main circuits of valve device stacks and assemblies, and of integrated conversion equipment. The terminal markings refer to stacks, assemblies and equipment comprising semiconductor valve devices. The object of this standard is to specify a logical alphanumeric marking system for the identification of the external main terminals of the main power circuits in a stack, valve device assembly or integrated conversion equipment, which is applicable for the purpose of reference in circuit diagrams, catalogues, descriptions, and information exchange and storage. In the case of stacks and assemblies, alphanumeric terminal marking systems are indicated for those converter connections which are the most important and most commonly used ones. Terminal marking systems making use of graphic symbols or identifying colours are not considered in this standard. This second edition includes the following significant technical changes with respect to the previous edition: - the whole document has been rewritten according to the current Directives; - the identification codes were deleted according to the withdrawal of IEC 60971; - examples of terminal marking were added, especially for self-commutated converters. "

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IEC 61378-1 Ed. 2.0 b:2011

Converter transformers - Part 1: Transformers for industrial applications

IEC 61378-1:2011 deals with the specification, design and testing of power transformers and reactors which are intended for integration within semiconductor converter plants. The scope of this International Standard is limited to application of power converters of any power rating. Typical applications are: - thyristor rectifiers for electrolysis; - diode rectifiers for electrolysis; - thyristor rectifiers for large drives; - thyristor rectifiers for scrap melting furnaces, and - diode rectifiers feeding inverters for variable speed drives. The standard also covers the regulating unit utilized in such application as step down regulating transformers or autotransformers. This edition includes the following significant technical changes with respect to the previous edition: - addition of winding connections with phase displacement (30°); - addition of transformers with more than one active part in the same tank; - change of reference power definition; - addition of regulating transformer feeding converter transformer; - addition of considerations about current sharing and hot spot temperature in high current windings for various winding arrangements; - addition of transductors used for d.c. voltage regulation together with diode rectifiers. The contents of the corrigendum of January 2012 have been included in this copy.

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IEC 60092-304 Ed. 3.0 b:1980

Electrical installations in ships. Part 304: Equipment - Semiconductor convertors

Applies to static convertors using semiconductor rectifying elements, such as diodes, reverse blocking triode thyristors, etc. Applies to a.c./d.c., d.c./a.c., d.c./d.c. and a.c./a.c. conversions.

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