Designing of a permanent magnet and directly driven synchronous generator for lo

Posted by sere on December 31st, 2019

In such factories, turbines and generators are coupled with each other through inventions such as belt pulses and gear mechanisms;

Power generation can be generated after the event.

The increase in the speed difference between the turbine and the generator increases the cost and complexity of the system and reduces the feasibility and efficiency.

Therefore, the producer suggested that the turbine must be fixed directly.

The Banki turbine is the first choice for small rivers, driving the generator through the pulley until 100 KW power, more than 100 KW power, the generator is driven by the turbinevia gearbox.

In this study, a generator constructed by a motor.com/products" target="_blank">permanent magnet and driven directly by a Banki turbine was designed, not by an external excitation.

Since the designed permanent magnet generator can eliminate the coupling design of the contemporary system, it can reduce the setup and operating costs.

Based on the geographical features of the site, the drop and flow, and the specific speed values of the water, determine the best choice for turbine types in any operating place.

At the small waterfall (between 2-60 meters long)

Large water flow, from 2 kWs to 2000 00kws, is using a Kaplan-type turbine with a specific speed of more than 450 rpm.

The rotational speed range of the hybrid turbine is 45550 rpm at 2-600 long mid waterfall and 2-600000 species of plants.

The speed range of the Pelton turbine is 2-30 rpm;

Large cloth and 2-1000 long-

100000 kWs power plant.

The Banki turbine is made up of gears and water outlets.

The water comes from the hanger mouth, penetrates into the gear that is shaped into wings, it passes through the inner space, enters the wings from the hoop of the gear, and so on, a secondary force that occurs to release the turbine.

Water flow and water flow of small hydropower stations.

Banki turbines can be used in the case of small water flow, which can achieve higher efficiency.

For low speed/high torque, permanent magnet motors are used in many industrial applications.

This means that the permanent magnet synchronous motor can be used instead of the asynchronous motor system connected to the gearbox at a low speed drive.

Since there is no gearbox cost for the direct drive system, the maintenance cost is not high, the efficiency is high, the noise emission is low, and the opening system is light.

Although connecting the motor to a drive machining system without a gearbox reduces the cost and the volume of the combined unit contains the motor, the gearbox and other equipment, it also improves the reliability of the system.

In recent studies, an electric motor with high torque at low speed has been designed.

The loss in the materials and methods used in the design the loss in the motor is the ferrite and core loss that occurs in the active magnetic components and the Cu loss in the machine. Magnet quietly brings added value to the improvement of the permanent Magnet structure synchronous motor.

SmCo magnets focus on the development of NdFeB magnets.

High-energy magnets like NdFeB have a relatively large impact on machine performance.

Therefore, in this design, NdFeB and SmCo with good magnetic properties and low cost is selected. As a design parameter, the magnetic flux density is calculated according to the formula.

Then the magnetic static analysis was carried out. [16].

The 3D model of the designed generator can be seen in the picture1.

For the convenience of analysis, even symmetric boundary conditions are used;

Subsequently, the analysis was obtained in a reasonable form in a short period of time.