CRRC 3.0MW Integrated Semi-Direct Drive Permanent Magnet Synchronous Generator

CRRC 3MW integrated semi-direct permanent magnet synchronous generator is designed for 3MW wind turbine sets, applicable for inland and coastal wind farms. Installed inside nacelles, it receives torque through blades and speed-up gearboxes, then connects to grid via four-quadrant converters to convert mechanical energy into electric energy. The generator is directly linked with gearbox, sharing bearings, lubrication system and front end cover while removing couplings, which shortens transmission axial length, reduces overall weight and cost. Its integrated design balances the drawbacks of high-speed doubly-fed and ultra-low speed direct-drive units, delivering reliable operation and mature low voltage ride-through solutions. We provide full life-cycle support for the 3MW integrated semi-direct permanent magnet synchronous generator, including equipment supply, on-site installation and commissioning, maintenance training, spare parts provision, and ongoing technical troubleshooting services.

Advantages of CRRC 3.0MW Integrated Semi-Direct Drive Permanent Magnet Synchronous Generator

Integrated connection with gearbox eliminates couplings, compacts structure and lowers system weight & cost.
Eccentric magnetic pole box reduces air gap harmonic, simplifying permanent magnet assembly and protection.
S-type dual-circuit housing water cooling plus forced rotor air cooling isolates thermal transfer to permanent magnets.
Skewed stator slots suppress tooth harmonics; insulated end cover avoids bearing damage caused by shaft current.

Technical Specifications

Rated Power:	3200/3400/3620 kW
Rated Voltage:	710 V
Rated Speed:	480/526/550 rpm
Duty Type:	S1
Number of Phases:	3
Stator Connection:	Star (Y)
Rated Efficiency:	≥ 97%
Power Factor:	0.9 cap
Insulation Class:	F
Protection Degree:	IP54
Weight:	12000 kg
Cooling System:	Water-cooled Frame + Air-cooled Rotor

coming soon

Product Model	Rated Power	Rated Voltage	Rated Speed	Weight	Number of Phases	Protection Class	Rated Current
1.5MW Direct-Drive PMSG	1580 kW	720 V	16.6 ~ 20.5 rpm	44 t	6	IP23	720 A
2MW Direct-Drive PMSG	2120 kW	720 V	14 rpm	49 t	2×3	IP54	2×1006 A
2.5MW Direct-Drive PMSG	2650 kW	690 V	13.5 ~ 16 rpm	53 t	2×3	IP54	2×1394 A
3MW Direct-Drive PMSG	3350 kW	690 V	12.2 ~ 13.9 rpm	69 t	2×3	IP54	2×1800 A
3MW Integrated Semi-direct PMSG	3200 / 3400 / 3620 kW	710 V	480 / 526 / 550 rpm	12 t	3	IP54	N/A
3.6MW Semi-direct PMSG	3830 kW	690 V	350 rpm	17.5 t	3	IP54	N/A
7.6MW Semi-direct PMSG	7600 kW	690 V	278 rpm	48.5 t	N/A	N/A	3347 A
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CRRC 3.0MW Integrated Semi-Direct Drive Permanent Magnet Synchronous Generator
Rated Power	3200/3400/3620 kW	Rated Speed	480/526/550 rpm
Rated Voltage	710 V	Duty Type	S1
Number of Phases	3	Stator Connection	Star (Y)
Rated Efficiency	≥ 97%	Power Factor	0.9 (Capacitive)
Insulation Class	Class F	Cooling System	Water-cooled Frame + Air-cooled Rotor
Protection Degree	IP54	Motor Weight	12000 kg
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Double fed induction generator

Product Name	Rated Power	Rated Speed	Rated Voltage	Rated Current	Rated Frequency	Rated Efficiency	Protection Class	Cooling Method	Weight
1.5MW Generator	1560 kW	1800 rpm	690 V / 420 V	1090 A / 390 A	50 Hz	≥97%	IP54/IP23	Air-to-Air + Water Jacket	7200 kg
2.5MW Generator	2560 kW	1720 rpm	690 V	1877 A	50 Hz	N/A	IP54	IC666	8100 kg
3.3MW Generator	3400 kW	1720 rpm	690 V	2493 A	50 Hz	N/A	IP54	IC616	10000 kg
4.2MW Generator	4200~4300 kW	1720~1780 rpm	1140 V	637 A	50 Hz	N/A	N/A	IC2X	N/A
6.4MW Generator	6400 kW	1720 rpm	1140 V	962 A	50 Hz	N/A	N/A	IC26	11500 kg
1.5MW AAC Generator	1560 kW	1800 rpm	690 V / 420 V	1090 A / 390 A	50 Hz	≥97%	IP54/IP23	Air-to-Air Cooling	7200 kg
2MW AAC Generator	2150 kW	1200 rpm	690 V / 401 V	1506 A / 624 A	50 Hz	≥97%	IP54/IP23	Air-to-Air Cooling	9500 kg
2.XMW AAC Generator	2280~2600 kW	1650~1820 rpm	690 V	N/A	50 Hz	≥96.5%	IP54/IP23 (Slip Ring Chamber)	IC616	7500 kg
4.XMW AAC Generator	3600~4200 kW	1200 r/min	690 V	N/A	50 Hz	≥97%	IP54/IP23	Air-to-Air Cooling	N/A
1.5MW Plateau AAC Generator	1567 kW	1735 rpm	690 V / 300 V	1138 A / 459 A	50 Hz	≥97%	IP54/IP23 (Slip Ring Chamber)	Air-to-Air Cooling	7600 kg
2MW Plateau AAC Generator	2150 kW	1800 rpm	690 V / 389 V	1506 A / 590 A	50 Hz	≥97%	IP54/IP23	Air-to-Air Cooling	7800 kg
2.5MW Plateau AAC Generator	2600 kW	1200 rpm	690 V / 415 V	1822 A / 665 A	50 Hz	≥97%	IP54/IP23 (Slip Ring Chamber)	Air-to-Air Cooling	11300 kg
2.5MW Low Temp AAC Generator	2600 kW	1200 rpm	690 V / 415 V	1820 A / 670 A	50 Hz	97%	IP54/IP23	IC666	11900 kg
2MW AWC Generator	2150 kW	1755 rpm	690 V / 312 V	1540 A / 614 A	50 Hz	≥97%	IP54/IP23	Air-to-Water Cooling	6500 kg
3.XMW AWC Generator	3100~3750 kW	700~1380 rpm	690 V	N/A	50 Hz	≥97%	IP54/IP23 (Slip Ring Chamber)	IC86W	12500 kg
5MW AWC Generator	5300 kW	1200 rpm	6300 V	406 A	50 Hz	≥97%	IP54/IP23 (Slip Ring Chamber)	Air-to-Water Cooling	17600 kg
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Squirrel cage wind turbine generator

Product Model

Rated Power

Rated Speed

Rated Frequency

Center Height

Number of Poles

Stator Rated Voltage

Stator Rated Current

Stator Winding Connection

Rated Efficiency

Power Factor

Insulation Class

Cooling Method

Motor Weight

Protection Class

2.5MW Generator

2650 kW

1550 rpm

51.4 Hz

630 mm

750 V

2307 A

Delta (△)

≥97%

≥0.88

Air-to-Air Cooled

8350 kg

IP54

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General Infomation of CRRC Stator Coils for Wind Turbines Above 1.5MW
Product Model	7MW	Stator slots	192
Rated voltage	1400 V	Winding pitch	1-11
Turns per coil	6	Weight	4.05 kg
Scale	1:01
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Technical Requirements

When the voltage phase sequence of the three-phase power supply is the same as the order of the terminal letters U, V, W on the motor terminals, the motor shall rotate counterclockwise when viewed from the shaft extension end; the bearing grease shall be BEM41-141, the lubrication cycle of the front and rear bearings is 0.5g or a similar amount of lubricating oil to be added every 8 hours, and the specific operation shall refer to the centralized lubricator operation manual.

Wind Power (Business Layout)

production-base

Wind Power (Market Situation)

As of December 2022, Yongji Electric has provided the wind power market with over 50,000 wind turbines (103GW), distributed across more than 1,800 wind farms both domestically and internationally. It comprehensively covers all wind power installation areas in China, accounting for 37% of the total number of wind turbines in operation, ranking first in the domestic market share.

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