A method for applying wireless power transmission and magnetic drive to superconducting motors

Abstract

The invention discloses a method applying wireless electric power transmission and magnetic force transmission on a superconductive motor; a frequency converter converts a power frequency power supply into a radio frequency power supply; a transmitting coil emits radio frequency signals; a receiving coil having consistent resonant frequency with the transmitting coil uses coupling resonance induction to form AC current; a rectification inversion unit supplies obtained current to a stator coil so as to form a rotary magnetic field; a rotor winding forms induction current and forms a magnetic field, and the formed magnetic field and the stator rotary magnetic field can mutually work to form a torque; the torque is transmitted to an external load through a magnetic force transmission device. The method uses the wireless electric power transmission technology to transmit the electric power to the stator coil, thus forming the rotary magnetic field in a motor air gap; the magnetic force transmission device can transfer the rotor output torque to the load, thus effectively prevent heat leakage load caused by a current feeder and a machinery transmission shaft, reducing refrigeration requirements on a refrigerating machine, reducing refrigeration system cost and motor operation cost, optimizing a motor system structure, reducing the motor size, and realizing a compact structure.

Description

technical field [0001] The invention relates to the technical field of high-temperature superconducting motors, in particular to a method for applying wireless power transmission and magnetic transmission to superconducting motors. Background technique [0002] The development of high-temperature superconducting materials and high-temperature superconducting technology has greatly promoted the research and development of high-temperature superconducting motors. High-temperature superconducting motors use high-temperature superconducting (HTS) material windings to replace the normally conductive copper windings in the normally conducting motors. Using the characteristics of high-temperature superconducting materials with zero resistance at critical temperature and critical current, the superconducting motor windings can be The current-carrying capacity is greatly improved, so that the motor can generate a large magnetic field with almost no Joule loss, so the high-temperature...

AI Technical Summary

Problems solved by technology

[0003] Traditional superconducting motors use current transmission lines to transmit three-phase electricity to the three-phase windings of the stator, thereby forming a rotating magnetic field in the air gap of the motor. The current transmission line connects the room temperature end and the low-temperature superconducting winding end, which is the main source of heat leakage in the motor system. components, greatly increasing the heat load of the system, thereby increasing the cost of motor cooling and the complexity of the system

Similarly, the traditional motor uses a mechanical transmission shaft to output torque, which not only increases the difficulty of sealing the system, but also increases the heat leakage of the system

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