CRRC 1.5MW Direct-Drive Permanent Magnet Synchronous Generator

CRRC 1.5MW direct-drive permanent magnet synchronous generator is directly coupled with the wind turbine hub, converting wind energy captured by the rotor into variable-voltage, variable-frequency alternating current. The output power is then fed into the grid after conversion by a full-power PWM converter. This generator features high energy conversion efficiency, high power density and outstanding operational reliability. When paired with a full-power converter system, it delivers excellent low voltage ride-through capability, making it a widely preferred solution for mainstream onshore wind farm projects. We provide full life-cycle support for the 1.5MW direct-drive 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 1.5MW Direct-Drive Permanent Magnet Synchronous Generator

Adopts permanent magnet excitation structure, eliminating excitation winding loss and improving overall energy conversion efficiency of the generator set.
Special optimized magnetic circuit structure ensures that the permanent magnets will not suffer irreversible demagnetization even under sudden short-circuit fault conditions, guaranteeing long-term performance stability.
No carbon brush or slip ring wearing parts are required in the whole machine, which greatly reduces daily maintenance workload and improves continuous operation reliability in remote wind farm sites.
Direct drive design removes the gearbox from the transmission chain, simplifying the overall transmission structure, reducing mechanical loss, lowering operation noise and vibration, and extending equipment service life.

Technical Specifications

Rated Power:	1580 kW
Rated Voltage:	720 V
Number of Phases:	6
Protection Class:	IP23
Rated Rotating Speed:	16.6 – 20.5 rpm
Rated Current:	720 A
Weight:	44 t

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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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Parameter	1.5MW	2.0MW	2.5MW	3.0MW
Rated Power (kW)	1580	2120	2650	3350
Rated Voltage (V)	720	720	690	690
Number of Phases	6	2×3	2×3	2×3
Protection Class	IP23	IP54	IP54	IP54
Rotational Speed (rpm)	16.6 – 20.5	14	13.5 – 16	12.2 – 13.9
Rated Current (A)	720	2×1006	2×1394	2×1800
Weight (t)	44	49	53	69
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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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