This part of GB/T 23479 specifies types, specifications, technical requirements, testing methods, inspection rules, safety and warning signs, product information, packaging, transport and storage of low-voltage double-fed asynchronous generators for grid-connected wind turbines.
This part of GB/T 23479 is applicable to low-voltage double-fed asynchronous generators for grid-connected wind turbines (hereinafter referred to as generators).
2 Normative references
The following documents contain provisions which, through reference in this part of GB/T 23479, 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 applies.
GB 755 Rotating electrical machines - Rating and performance (GB 755-2000, idt IEC 60034-1: 1996)
GB/T 997 Rotating electrical machines - Classification of types of construction, mounting arrangements and terminal box position for (IM Code) (GB/T 997-2008, IEC 60034-7: 2001, IDT)
GB/T 1032 Test procedures for three-phase induction motors
GB 1971 Rotating electrical machines - Terminal markings and direction of rotation (GB 1971-2006, IEC 60034-8: 2002, IDT)
GB/T 1993 Cooling methods for rotating electrical machines (GB/T 1993-1993, idt IEC 60034-6: 1991)
GB/T 2900.25 Electrotechnical terminology - Rotating electrical machines (GB/T 2900.25-2008, IEC 60050-411: 1996, IDT)
GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification (IEC 60034-5: 2000, IDT)
GB 10068 Mechanical vibration of certain machines with shaft heights 56 mm and higher - Measurement, evaluation and limits of vibration severity (GB 10068-2008, IEC 60034-14: 2007, IDT)
GB 10069.3 Measurement of airborne noise emitted by rotating electrical machines and the noise limits - Part 3: Noise limits (GB 10069.3-2008, IEC 60034-9: 2007, IDT)
GB/T 23479.2 Wind turbine - Double-fed asynchronous generator - Part 2: Testing methods
JB/T 5811 Test method and limits of form-wound winding for alternating current low-voltage electrical machines
JB/T 9615.2 Test limits of the interturn insulation on random wound winding for AC low-voltage machines
3 Terms and definitions
For the purposes of this part, the terms and definitions given in GB/T 2900.25 and the following apply.
3.1
doubly-fed asynchronous generator
variable speed constant frequency generator in which the stator and rotor are directly or indirectly connected to the power grid and capable of exchanging energy
3.2
operating speed range
speed range, namely, nmin~nmax, within which the generator shall be able to operate reliably when the synchronous speed of the generator is taken as the basic speed value (n0), where nmin is the speed corresponding to the cut-in wind speed of the wind turbine (nminn0)
