High-efficiency and energy-saving series-pole and series-winding ultra-low speed direct-drive motor

Abstract

The invention discloses a high-efficiency and energy-saving series-pole series-type ultra-low-speed direct-drive motor, which comprises a motor casing, a stator, a rotor, a rotor shaft, a bearing and a motor end cover, and the motor casing is provided with motor end covers at the openings at both ends. The two ends of the rotor shaft are respectively arranged at the shaft centers of the motor end covers at both ends of the motor casing through bearings. The inner side of the motor casing is sequentially provided with a plurality of stators or rotors along its axial direction. Its axial direction is sequentially provided with a plurality of rotors or stators which are matched with the stators or rotors on the motor casing; from one end of the rotor shaft to the other end, the wiring taps U2, V2 and W2 of the coils of the stator are respectively connected with the next stator. The wiring taps U1, V1 and W1 of the coil form an angle difference in series or parallel connection. The motor of the present invention realizes a low-speed motor by using the principle of series-pole-string-group combination, which can meet the direct drive of large, medium and small generators or motors, reduces the mechanical conversion drive loss, reduces the failure rate, improves efficiency, and saves energy and cost effects. are very obvious.

Description

technical field [0001] The invention relates to the field of motor equipment, in particular to a high-efficiency and energy-saving series pole series group type ultra-low-speed direct-drive motor. Background technique [0002] The stator and rotor diameters of ordinary generators reaching the megawatt level or high-power motors are very large, so as to ensure the multi-polarity and low-speed implementation of the stator coils. Due to the large diameter of the rotor for power generation or the reluctance force when the motor is started, a very large rotational torque is required to drive the generator rotor to rotate for power generation, so a very large rotational driving force is required to drive the bulky generator or motor rotor rotate. [0003] In the wind power industry, whether in the world or at home, wind power is limited by regional wind speeds and cannot be fully applied and promoted. At the same time, it restricts the effective use of renewable energy and has to...

AI Technical Summary

Problems solved by technology

[0003] In the wind power industry, whether in the world or at home, wind power is limited by regional wind speeds and cannot be fully applied and promoted. At the same time, it restricts the effective use of renewable energy and has to rely on high-energy and high-pollution thermal power to make up for emergencies. Electricity needs, due to the large size, it also causes great difficulties in transportation and installation, and it cannot be installed and applied in most areas of our country, making clean energy wasteful

[0004] However, the fuel or gas power generation industry uses high-speed generators, large throttle or high gas supply to achieve high speed of the prime mover, meet the generator speed requirements to ensure generator frequency and output power, resulting in increased waste of fuel and gas environmental pollution

As the power source, the motor is basically high-speed rotating power. In order to obtain a large rotating torque, it must rely on the mechanical reducer to achieve it, but the energy consumption will be greatly lost after the mechanical deceleration.

The application of high-power motors also requires large volume, high starting torque, large loss rate of starting energy consumption, and long starting time

Images