1.Gearless, low starting torque and low speed.
2.Installed by human design, easy installation, maintenance and repair.
3.Using a new set of ring power output devices to overcome the traditional generator when winding the cable.
4.Permanent magnet generator rotor with patented generator, together with the special stator design, effectively reduce the generation of drag torque, while more wind turbine and generator have good matching characteristics, the device runs reliably.
3.Using a new set of ring power output devices to overcome the traditional generator when winding the cable.
4.Permanent magnet generator rotor with patented generator, together with the special stator design, effectively reduce the generation of drag torque, while more wind turbine and generator have good matching characteristics, the device runs reliably.
Specification:
Bayoung PMGNE20000
Rated power: 20000W
Rated voltage: 220/380V
Rated speed: 360r/m
Output current: AC
Starting torque (N*M): 7.5 Nm
Rated torque (N*M):477.5 Nm
Generator: 3-phase permanent magnet synchronous alternator
Insulation class:: F
Service life:: More than 20 years
Warehouse: HRB or for your order
Stock material: iron
Shell Material: Stainless Steel
Permanent Magnet Material: Rare Earth NdFeB
Degree of protection: IP54
Lubrication: grease
Working temperature: 40℃-80℃
Packing List：
1x Generator
Generator
The generator is a component that converts the mechanical energy of impeller rotation into electrical energy. The 20 kw unit adopts high-efficiency multi-pole permanent magnet synchronous motor, which has the advantages of simple structure, reliable operation, high efficiency, small size, etc. The rated power of the generator is 20kw, the rated voltage is 380V /400V, and the insulation class of the winding is F.
The generator is composed of stator, rotor, main shaft and otheraccessories. The generator stator is composed of stator core (silicon steel sheet), winding and other accessories; The rotor is composed of rotor core and permanent magnet.
The generator winding is three-phase output, and three virtual slots are set, which can better reduce the torque of the generator. The specially designed unique arrangement on the rotor magnetic pole makes its vibration and noise lower during operation.
The generator adopts passive natural air cooling, and the external wind in the air cools the winding through the stator core cooling teeth. When the external wind increases, the unit power increases, and the corresponding motor heat output increases, while the cooling efficiency also increases. Therefore, the temperature of the motor winding is kept at a relatively low level. At the same time, this cooling method does not require an independent fan or pump, which makes the overall efficiency and reliability of the motor higher. The stator winding material shall be insulation material of grade F or above, and the temperature rise shall be assessed according to grade B. The winding is soaked with high-performance polyesterimide insulation resin, and the excellent impregnation process ensures the insulation performance of the stator winding。
Description of permanent magnet characteristics
NdFeB（Nd2Fe14B）Permanent magnet material is called the third generation rare earth permanent magnet material, and is the highest performance permanent magnet material so far. With the development of production and manufacturing technology of permanent magnet materials, the performance of permanent magnet materials continues to improve and improve, especially the improvement of thermal stability and corrosion resistance of NdFeB permanent magnet, as well as the gradual maturity of research and development experience of permanent magnet motors, the performance degradation of permanent magnet can be avoided through the selection and design of permanent magnet and the design and control of magnetic circuit structure of the motor. The permanent magnet motor adopts high performance NdFeB permanent magnet material, and high enough coercivity can avoid the loss of magnetism at high temperature. In order to ensure the reliable magnetic properties of permanent magnets, the company's technical research and development department has done the following work:
1、 The selection of permanent magnet has been checked and calculated by the magnetic property of high temperature short circuit demagnetization, and the working point is above the inflection point of demagnetization curve with a safety factor left;
2、 When designing the generator, fully consider the demagnetization effect of the reverse magnetic field generated under special working conditions on the magnet. The performance parameters of the permanent magnet selected in the design can ensure that the working point of the permanent magnet is above the inflection point during overload, high temperature short circuit and lightning stroke, and thepermanent magnet will not produce permanent demagnetization;
3、The control system of the wind turbine generator unit has multiple protection functions such as temperature, speed, overcurrent, undervoltage, etc. Under abnormal conditions, the control system of the unit makes the generator have perfect and reliable protection;
4、Strict and high standard technical terms for permanent magnet procurement have been formulated to ensure the performance of each piece of permanent magnet material through quantitative technical indicators, process quality control and scientific finished product sampling and testing
5、Because NdFeB permanent magnet contains active rare earth elements, which are easy to oxidize and corrode, in order to improve its corrosion resistance, the surface of permanent magnet is galvanized, and a uniform and dense protective layer is formed on its surface through strict spraying process, significantly improving the corrosion resistance of permanent magnet。
On Sep 12, 2025 at 09:27:31 PDT, seller added the following information: