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Release Time: Jul 29,2025

Microgrid systems

SYSTEM CHARACTERISTIC

• Low-speed permanent magnet generator, direct drive gearless transmission design.

• Active pitch control technology ensures output power stability in strong wind.

• Multiple safety protection for mechanical, electromagnetic brakes and active yawing.

• Full-power inverter in power frequency isolation technology with multinational grid-tiecertification.

• SCADA remote real-time monitoring system.

• Suitable for small wind farms, smart grids, microgrid systems, etc

• Efficient power generation, low-noise wind turbine.

TECHNICAL PARAMETER

Manufacturer	Xiamen Lianbang Technology Co., LTD
Country of origin	China
Parameter	Specs
Model	LB42-300
Design class	SWT Class IIIA
Type	Permanent magnet direct drive,three blade,horizontal axis,upwind
Design life	20 years
Rotor diameter	42m
Hub height	39m (51m optional)
Tower type	tubular column
Performance
Rated power	300kW, 400 VAC, 50Hz160Hz,3-phase 3-ine
Power regulation	Pitch control
Rated rotation speed	32rpm
Max rotation speed	38rpm
Cut-in wind speed	3m/s
Rated wind speed	10m/s
Cut-out wind speed	10m/s
Survival wind speed	52.5m/s
Weight
Blade	3*1.2 t
Nacelle&generator	About 25t
Tower	30 t
Brake system
Aerodynamic braking	Active pitch control
Mechanical braking	Mechanical main-shaft brake
Electromagnetic braking	Electronic dumpload control
Yawing &untwisting
Yawing mode	Electric
Untwisting mode	Auto untwisting
Control system
Control system	Industrial PLC controller
Inverter type	Full-power inverter
Monitoring	SCADA Cube 2.0
Generator
Generator type	Permanent magnet
Drive mode	Direct drive (gearless box)
Rated voltage	400VAC
Insulation grade	F class
Blade
Blade material	Glass fiber(FRP)
Blade length	20m
Blade quantity	3
Tower
Surface treatment	Anti-rust painting
Height	37m (50m optional)
Noise
Noise level	<58dBA@25m
Auxiliary power supply
Normal operation	≤6kW
Standby power demand	≤1.8kW
PCS standby consumption	≤0.6kW
Environment temperature
Operation environment	-20℃ to 50℃
Generator protection class	IP54,ISO 12944-2 C5
Lightening protection	Lightning receptors for blade tip connected to earth through loop.Anemometer and wind vane with separate lightning receptors.

SYSTEM CONFIGURATION

Wind turbine generator system is composed of wind turbine generator, on-grid controller and on-gridinverter.(see the photo)

PERFORMANCE

AWP(m/s)	4.0	4.5	5.0	5.5	6.0	6.5	7.0	7.5
AEP(MWh)	293	416	550	686	816	934	1034	1114

ON-GRID CONTROLLER

Control parameter
Output voltage range	0～750Vdc
Rated rotation speed	32rpm
Max controlling rotation speed	38rpm
Yawing speed	0.55/s
Yawing accuracy	<3.2°
Environment parameter
Working environment	-20℃~+50℃
Storage environment	-30℃~+60℃
Relative humidity	<90%RH
Elevation	<1000m

ON-GRID INVERTER

Model	GNW60K3G
DC input
Working voltage range	420V~750VDC
Max input voltage	780VDC
On-grid output
Rated output power	300kW
Rated grid voltage	400V±15% 3-phase 3-line
Rated working frequency	50/60Hz±5%
Power factor (cosθ)	>0.99
Max inverter power	≥94%
Harmonic(THD)	Total current harmonic <5%, each time<3%(rated power)
Display &communication
Display panel	LCD
Communication interface	RS485
System application
Inverter quantity	1 units
System rated power	300kW

TOWER and FOUNDATION

Tower model		TD4-37
Height		37m
Section		2
Wall thickness		10mm/12mm/14mm
Material		Q355
Flange diameter		1620mm(upper)/2760mm(bottom)
Surface treatment		painting
Weight		30t
Dimension (reference value)		10mx10mx1.3m