Cylinder type series-connection line direct-current monopole motor

Abstract

The invention discloses a cylinder type series-connection line direct-current monopole motor; the cylinder type series-connection line direct-current monopole motor comprises a machine shell (1100), astator (1300) and a rotor (1200), wherein the machine shell comprises a cylindrical shell (1100-A) and disc type end covers (1100-B) at the two axial ends of the cylindrical shell (1100-A); the stator (1300 and the rotor (1200) are arranged in the machine shell; the motor is characterized in that the stator comprises an excitation coil fixing body (1301) and annular excitation coils (1302); the rotor (1200) comprises at least one open-loop squirrel-cage armature (1202) and a cylindrical rotor (1201); the annular excitation coils (1302) are arranged on the excitation coil fixing body (1301); at least one open-loop squirrel-cage armature (1202) is arranged on the cylindrical rotor (1201); at least two annular excitation coils are arranged at intervals in the axial direction; the current directions of adjacent annular excitation coils are opposite to form a monopole radial magnetic field; and one open-loop squirrel-cage armature (1202) is correspondingly arranged on the inner side of theeffective excitation edge of each monopole radial magnetic field .

Description

Technical field [0001] The invention relates to the field of unipolar motors, in particular to a cylindrical series line superconducting DC unipolar generator or motor or superconducting energy storage device. Background technique [0002] 1. At present, high-temperature superconducting materials are gradually entering the development stage of industrial application. The field of motor technology is even more popular in the application of superconducting materials. High-temperature superconducting materials have an order of magnitude higher current-carrying density than conventional conductive materials and extremely low Electricity loss, the use of superconducting materials made motors have higher power density, smaller size and higher efficiency. [0003] 2. However, wires or strips made of superconducting materials have large AC losses when passing AC power. DC superconducting applications are relatively effective development directions, and unipolar structures are undoubtedly b...

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Problems solved by technology

[0003] 2. However, the wire or strip made of superconducting materials has a large AC loss when passing through alternating current. The application of DC superconducting is a relatively effective development direction, and the unipolar structure is undoubtedly the best design and manufacture of superconducting motors. option, but the unipolar motor has the weakness that the armature potential is too small, which will increase the armature current, which can reach tens of thousands, hundreds of thousands of amperes, or even higher, resulting in a problem of rotating current collection Technically It has become a difficult problem. In order to match a wider range of parameters and solve various disadvantages caused by large currents, increasing the armature voltage is an important issue that must be solved.

[0004] 3. The current conventional unipolar superconducting motors generally use conventional copper armature windings as the rotor, and the superconducting excitation coil as the stator. In order to increase the armature voltage, the armature is generally connected by a brush slip ring. Series structure and large current collection, but the current collection slip ring itself brings many corresponding technical problems, such as corrosion of alkali metal, matching of wet brush of contact coupler and slip ring material, cooling and cooling, due to magnetic circuit requirements However, the selection of non-magnetic materials, various problems caused by the electromagnetic force generated by the leakage magnetic field in the collector area on liquid metal or solid brushes, and the setting of the ambient atmosphere have greatly restricted the practical application of unipolar superconducting motors. Development process

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