GUODIAN United Power Technology Inc.

Beijing, China

GUODIAN United Power Technology Inc.

Beijing, China
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Patent
GUODIAN United Power Technology Inc. | Date: 2014-12-08

The present invention discloses a wind turbine yaw control method and system, the method comprising the following steps: establishing a reference model, giving the optimal yaw reference model different wind speeds for wind shift angles; using model reference adaptive control: getting the adaptive control input so that the difference between the actual yaw angle deviation of the wind and the optimal wind yaw angle deviation is at a minimum. The wind turbine yaw control method and system of the present invention can adaptively track the wind speed in different sections of the optimum wind yaw deviation, improve operating performance under the influence of factors such as wind direction measurement and bias of the yaw system in order to achieve maximum efficiency absorption of wind energy, as well as optimize wind turbine power generation to improve economic efficiency and the operation of the entire wind farm.


Peng C.,GUODIAN United Power Technology Inc.
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2016

The mechanical-aerodynamic-control multi-disciplinary co-simulation model of wind turbine was established. Through numeric simulation, the dynamic response of wind turbine under seismic condition was studied. The calculation results show that the action of stopping operation of wind turbine has a significant influence on the seismic dynamic response. By comparative analysis, the seismic loads calculated by mode-decomposition response spectrum method and multi-body dynamics method without considering stop action were conservative. © 2016, Editorial Board of Acta Energiae Solaris Sinica. All right reserved.


Zhang X.,GUODIAN United Power Technology Inc.
Dianli Zidonghua Shebei/Electric Power Automation Equipment | Year: 2011

The mathematical model of grid-side converter with LCL filter is built and analyzed to improve its performance in doubly-fed wind power system under unbalanced grid voltage conditions. An unbalanced grid current instruction algorithm based on LCL filter and a compound current control strategy based on the parallel PI controller and repetitive controller in synchronous rotating dq frame are proposed, which effectively reduces the low-order harmonics of grid current, achieves the positive/negative current tracking without steady-state error and enhances the DC voltage stability. The scheme of active damping by filter capacitor current is applied to suppress the transient resonance of LCL filter. Experiment with a 5 kW prototype verifies the correctness of the proposed control strategy.


Gu Y.-Q.,GUODIAN United Power Technology Inc. | Wang H.-L.,GUODIAN United Power Technology Inc. | Yang H.-Y.,GUODIAN United Power Technology Inc.
Gongcheng Lixue/Engineering Mechanics | Year: 2013

Based on the complete second-order displacement fields of an Euler-Bernoulli beam element, a large deformation geometric nonlinear Euler-Bernoulli beam element based on U.L. formulation is derived. These complete second-order displacement fields of Euler-Bernoulli beam elements include the additional displacement caused by the rotation of elemental cross-section in the transverse and longitudinal displacement fields. The nonlinear finite element formulas of an Euler-Bernoulli beam element under the form of U.L. formulation in a local coordinate system are derived using a Cauchy strain tensor and the principle of virtual displacement. The total equilibrium equation and tangent stiffness for the large displacement geometric nonlinear analysis of a frame are obtained in the total coordinate system using a co-mobile coordinate system. The results of several typical example show that this element has high precision.


Patent
GUODIAN United Power Technology Inc. | Date: 2011-07-25

The present invention is a large scale disc-type multi-stator permanent magnet direct-drive wind power generator which mainly comprises a hub (1), a rotor shaft (5), a stationary shaft (11), a bracket (16) and a plurality of generator units, wherein: the stationary shaft (11) is fixed to the bracket (16); the rotor shaft (5) is fixed to the hub (1) and is rotatably mounted on the stationary shaft (11); each of the generator units comprises a disc-type winding (10) and permanent magnets (6) disposed on two sides of the disc-type winding (10); each of the disc-type windings (10) of the generator units is fixedly connected to the casing (8); each of the disc-type windings (10) comprises a plurality of rectangular spiral windings which are connected in series, and ends of the connected windings are guided via wires to an exterior of the casing to connect in series or in parallel with other disc-type windings; permanent magnets (6) are fixed on the rotor shaft (7) via rotor rotating discs (5). The present invention makes use of a disc-type multi-stator structure which fully utilizes the internal space of the rotors and increases the power density of the generator. It also reduces the longitudinal and axial sizes of the wind generators, and effectively lower generator weight and costs.


Patent
GUODIAN United Power Technology Inc. | Date: 2011-06-30

A double-stator permanent magnetic direct-driven wind power generator supported by a fixed shaft (17) includes a wheel hub (1), the fixed shaft, a front bearing (15), shaft sleeves (16), a back bearing (18), a front bearing end cover (2), back bearing positioning elements (19), hollow rotating shafts (3), a rotor disk (5), a rotor (8), an outer stator (7), an inner stator (9), an inner stator bracket (11), a generator front end cover (4), a generator shell (6) and a frame (14). The fixed shaft is connected with the frame; the front bearing and the back bearing are mounted on the fixed shaft; the shaft sleeves are sleeved on the fixed shaft and arranged between inner rings of the front bearing and the back bearing; the back bearing locating elements are arranged outside the back bearing; the hollow rotating shafts are sleeved on the front and back bearings of the fixed shaft; the front bearing end cover is connected with the hollow rotating shafts. The generator reduces weight and cost greatly.


Trademark
GUODIAN United Power Technology Inc. | Date: 2012-06-05

dynamos; generators of electricity; hydraulic turbines; hydraulic engines and motors for the generation of electricity; wind powered equipment, namely, wind-powered electricity generators, wind turbines, blades being parts of machines, gearbox and fittings thereof; electricity generating device by wind power, namely, generators for wind turbines; water powered equipment, namely, water-powered electricity generators; machine wheelwork, namely, gears for machines. installation, maintenance and repair of wind powered electricity generating devices; installation, maintenance and repair of wind machines and their fittings; installation, maintenance and repair of machine wheelwork; machinery installation, maintenance and repair; dynamos installation, maintenance and repair; computer hardware installation, maintenance and repair; repair information; installation, maintenance and repair of electric appliance; rust proofing.


Trademark
GUODIAN United Power Technology Inc. | Date: 2012-08-21

Dynamos; generators of electricity; hydraulic turbines; hydraulic engines and motors for the generation of electricity; wind powered equipment, namely, wind-powered electricity generators, wind turbines, blades being parts of machines, gearbox and fittings thereof; electricity generating device by wind power, namely, generators for wind turbines; water powered equipment, namely, water-powered electricity generators; machine wheelwork, namely, gears for machines.


Trademark
GUODIAN United Power Technology Inc. | Date: 2012-08-21

Dynamos; generators of electricity; hydraulic turbines; hydraulic engines and motors for the generation of electricity; wind powered equipment, namely, wind-powered electricity generators, wind turbines, blades being parts of machines, gearbox and fittings thereof; electricity generating device by wind power, namely, generators for wind turbines; water powered equipment, namely, water-powered electricity generators; machine wheelwork, namely, gears for machines.


Trademark
GUODIAN United Power Technology Inc. | Date: 2012-08-21

Dynamos; generators of electricity; hydraulic turbines; hydraulic engines and motors for the generation of electricity; wind powered equipment, namely, wind-powered electricity generators, wind turbines, blades being parts of machines, gearbox and fittings thereof; electricity generating device by wind power, namely, generators for wind turbines; water powered equipment, namely, water-powered electricity generators; machine wheelwork, namely, gears for machines.

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