On the basis of fundamental research in the physics of magnetic phenomena have been developed unique multipolar MMS of rare earth bonded magnets. Complex noncollinear magnetization distribution in the volume of magnetic systems has allowed to reach the maximum values ​​of the magnetic field and its optimal distribution. Developed MMS formed the basis for the creation of energy-efficient BLDC of new generation.
Inhomogeneously magnetized MMS with diameters ranging from 12 to 225 мм (from 2 to 32 poles)

Designs were developed and manufactured experimental samples BLDC with capacity from 0,1 to 15 kW. Tests have shown, the experimental samples of BLDC have unique properties. So , in particular, the efficiency reaches record levels in a wide range of power capacities (look at. graph), weight and size parameters BLDC 2-3 times better, than the asynchronous (induction) motors of the same capacity, significantly reduced acoustic noise, achieved a high specific torque and uniformity of rotation. The overload capacity of the experimental samples determined more by the control unit, than by electric motor.

For each of these engines are designed layouts switching and control units. All models of electrical control blocks were created using microprocessors and power modules and provide the adjustment of power , rotation speed and special modes of rotation engines as directly, and the remote access via the data bus from the external computer.

All models BLDC allow power supply from the net of AC or DC currents without changing of the design of the control units, and can also serve as an electrical current generator.

Heat losses of our designed BLDC 2 twice less , than the serial asynchronous motors of the same power capacity, at substantially lower weight and size parameters.

Estimated cost of the developed BLDC with the control block may be lower, than the price of commercially available induction motors with frequency converter, with appropriate methods of manufacture.

Table comparative characteristics of the experimental samples BLDC and similar commercially available power asynchronous motors.

KEY BENEFITS of OUR Designed BLDC

Developed BLDC have a number of advantages, which enable their use in those cases, when it is impossible to apply standard commercially available motors, need to improve consumer characteristics of technical devices or achieve significant energy savings at work, as well as to lower the price of the final device.

Main features developed BLDC.

1. The maximum value of the high efficiency (efficiency) to 92% allows the use of BLDC in cases where the need to save energy when using energy-consuming devices (conditioning, ventilation systems, pumps, etc.). High efficiency permanent magnet motors allows increase the time of BLDC from an independent power source in several times (Trolling Motors, cordless tools, household appliances).
2. Adjusting the speed of rotation in the range of 20 ÷ 100 % of the nominal value, with maintaining maximum performance (mechanical moment, efficiency) can achieve significant energy savings when replacing asynchronous motors on BLDC intelligent ventilation and air conditioning. Generally, part of the time, these systems can operate at reduced power, providing the necessary comfort.
3. Minimised "Cogging torque" (less 0.04 Mmechanical), vibration and minimal acoustical noise at work in all modes allows for use in consumer devices provide significantly more comfortable living conditions.
4. Minimal heat loss in BLDC, allow you to use them in a sealed design, that offers the prospect of their application in devices for use in hazardous and flammable environments.
5. The high value of the mechanical torque over a wide speed range opens up the possibility of their use in "shut-off" valve equipment for transportation of oil and gas.
6. Significantly better weight and size characteristics in comparison with similar motor power, certainly, discover for developed BLDC a perspective of using in the aviation industry and make real significantly reducing of the cost of the final production.

Specifications,ru:

1. Напряжение питания – 13В
2. Мощность – 400 Вт
3. Высота транца – 500 мм
4. Тип двигателя – винтовой
5. Управление – румпельное
6. Гребной винт – трехлопастной

Гребной винт с интегрированной многополюсной магнитной системой