This part of GB/T 25388 specifies relevant terms and definitions, general technical requirements, test methods, inspection rules and relevant product information of AC-DC-AC voltage source converter of double-fed variable speed constant frequency wind turbine generator system.
This part is applicable to AC-DC-AC voltage source converter of double-fed variable speed constant frequency wind turbine generator system, i.e. double-fed converter (hereinafter referred to as "converter").
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 191 Packaging - Pictorial Marking for Handling of Goods
GB/T 2900.33-2004 Electrotechnical Terminology - Power Electronics (IEC 60050-551:1998, IDT)
GB/T 3859.1-1993 Semiconductor Convertors - Specification of Basic Requirements (eqv IEC 60146-1-1: 1991)
GB/T 3859.2-1993 Semiconductor Convertors - Application Guide (eqv IEC 60146-1-2:1991)
GB/T 12668.2-2002 Adjustable Speed Electrical Power Dive Systems - Part 2: General Requirements - Rating Specifications for Low Voltage Adjustable Frequency A.C. Power Drive Systems (IEC 61800-2: 1998, IDT)
GB/T 12668.3-2003 Adjustable Speed Electrical Power Dive Systems - Part 3: EMC Product Standard Including Specific Test Methods (IEC 61800-3: 1996, IDT)
GB/T 13384 General Specifications for Packing of Mechanical and Electrical Product
GB 18451.1-2001 Wind Turbine Generator Systems - Safety Requirements (IEC 61400-1: 1999, IDT)
GB/T 20320-2006 Measurement and Assessment of Power Quality Characteristics of Wind Turbine Generator System (IEC 61400-21: 2001, IDT)
GB/T 25388.2 Double-fed Converter of Wind Turbine Generator System - Part 2: Test Method
3 Terms and Definitions
For the purposes of this part, the terms and definitions given in GB/T 3859.1 and GB/T 2900.33 and the following apply.
3.1
Converters
3.1.1
generator-side converter
the three-phase fully controlled bridge static converter connected with the rotor side of double-fed generator, realizing decoupling control for active power and reactive power of double-fed generator
3.1.2
line-side converter
the three-phase fully controlled bridge static converter connected with three-phrase line side, realizing DC link voltage control and line-side power factor control
3.1.3
DC link
the DC circuit connected between generator-side converter and line-side converter
3.1.4
Double-fed converter
the converter composed of generator-side converter, DC link and line-side converter, realizing bidirectional flow of energy (hereinafter referred to as "converter")
3.2
Converter parameters
3.2.1
line-side converter rated current
the root-mean-square value of the maximum fundamental current not exceeding the limit which may be continuously supplied by line-side converter under the rated operating conditions
