SU920375A1

SU920375A1 - Rotor magnetic suspension system

Info

Publication number: SU920375A1
Application number: SU792873064A
Authority: SU
Inventors: Владимир Александрович Трегубов; Владимир Павлович Ларин; Владимир Сергеевич Ширинский; Анатолий Владимирович Сорокин; Николай Иванович Башкеев; Александр Владимирович Белозеров
Original assignee: Московский Ордена Ленина Энергетический Институт; Предприятие П/Я А-3724
Priority date: 1979-12-10
Filing date: 1979-12-10
Publication date: 1982-04-15

Description

(S) СИСТЕМА МАГНИТНОГО ПОДВЕСА РОТОРА(S) ROTOR MAGNETIC SUSPENSION SYSTEM

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Изобретение относитс к приборо-i строению, св зано с вопросами бесконтактного подвешивани быстровращающихс роторов и может быть использовано в гироскопах, маховиках, центрифугах и т.п.The invention relates to a device-i structure, associated with the issues of contactless suspension of high-speed rotors and can be used in gyroscopes, flywheels, centrifuges, etc.

J Известны системы магнитного подвеса ротора, содержащие подшипники на посто нных магнитах и электромагниты аксиальной стабилизации ротораj а также отдельный статор дл приведени ротора во вращение 1.J There are known magnetic rotor suspension systems containing permanent magnet bearings and electromagnets for axial stabilization of the rotor and a separate stator for driving the rotor 1.

Однако известна конструкци характеризуетс сложностью, св занной с необходимостью выполнени двух электромагнитных элемента с разными обмотками .(электромагниты и статор) и разными источниками питани ,VMTO приводит к увеличению веса, расхода активных материалов, повышенному энергопотреблению, что дл автономных объектов, на которых используютс подобные роторы, например гироскопов, вл етс существенным недостатком.However, the known design is characterized by the complexity associated with the need to perform two electromagnetic elements with different windings. (Electromagnets and stator) and different power sources, VMTO leads to an increase in weight, consumption of active materials, increased energy consumption, which for autonomous objects that use such rotors, such as gyroscopes, are a significant disadvantage.

Известны также системы магнитного .подвеса ротора, содержащие установленные в корпусе два статора с многофазными обмотками, подключенными к регулируемому источнику напр жени , ротор с посто нными магнитами, датчики углового и линейного положени ротора, соединенные с регулируемым источником через блок управлени 2}.Also known are rotor magnetic suspension systems containing two stators installed in a housing with multiphase windings connected to an adjustable voltage source, a rotor with permanent magnets, angular and linear rotor position sensors connected to an adjustable source via control unit 2}.

Недостатками этого устройства в10 л ютс сложность, низкий КПД. Крсже того, дл стабилизации ротора необходим сложный блок управлени , реаги рующий на изменение положени ротора по трем ос м и еще по углу поворота. The disadvantages of this device are the complexity and the low efficiency. In addition, to stabilize the rotor, a complex control unit is needed, which reacts to a change in the position of the rotor along three axes and another angle of rotation.

IS Увеличенна сложность блока управлени положением ротора, наличие большого числа датчиков положени (по крайней мере п ти) ведет к уменьшению надежности всей системы магнитм ного подвеса.IS The increased complexity of the rotor position control unit, the presence of a large number of position sensors (at least five) leads to a decrease in the reliability of the entire magnetic suspension system.

Claims

The aim of the invention is to simplify the suspension system, increasing efficiency. 392 This goal is achieved by the fact that in the system of magnetic suspension of the rotor containing two stators installed in a corps with multiphase windings connected to an adjustable voltage source, a rotor with permanent magnets, angular and linear position sensors of the rotor connected to an adjustable source through the control unit, on permanent magnets, annular sectors of ferromagnetic material are installed with intervals relative to each other, and the stators are equipped with annular magnetic circuits. The drawing shows a schematic diagram of a magnetic suspension system. The magnetic suspension system contains two stator 2 mounted in housing 1 with multiphase windings 3 connected to an adjustable voltage source, a rotor 5 with permanent magnets 6, sensors 7 of the angular and linear position of the rotor connected to the adjustable source through the control unit 8, on Permanent magnets are installed with annular sectors 9 of ferromagnetic material with gaps relative to each other, and the stators are equipped with annular magnetic cores 10. The magnetic suspension system works as follows. The rotor 5 is centered in the diametrical direction due to the interaction of the field of the permanent magnets 6 with the magnetic core of the stator 2, i.e. A radial centering force is created In the axial direction, the rotor 5 is unstable, due to the inevitable inequality of the forces of attraction of the rotor 5 to the two stator 2. To ensure the axial stability of the rotor 5, the current in the windings 3 of the two stators 2 is controlled so that its magnitude increases in that stator 2, from which the rotor 5 moves away, or vice versa, the current decreases in that stator 2, to which the rotor 5 approaches. In general, combined current control can also be performed. The presence of ferromagnetic sectors 9, through which the circuit of the magnetic flux created by the current flowing through the windings 3 is ensured, causes the axial force of attraction of the rotor 5 to the stator 2 to be created, which can be adjusted. The interaction of the flux of magnets 9 with the currents of the stator 2 creates a torque that causes the rotor 5 to rotate. The efficiency is increased due to the fact that in the proposed design it is possible to reduce the magnetizing current of the windings 3. The radial position of the rotor 5 is stable due to the presence of permanent magnets 6, which simplifies the suspension system. Thus, the use of the proposed system of magnetic suspension provides a simplified design and increased efficiency. The invention The system of magnetic suspension of the rotor, containing two stators installed in the housing with multiphase windings connected to an adjustable voltage source, a rotor with permanent magnets, rotor angular and linear position sensors connected to an adjustable source through a control unit, about 20 tons and more so that, in order to simplify the system, permanent magnets have annular sectors made of ferromagnetic material spaced relative to each other, and the stators are equipped with an annular magnet gadflies. Sources of information taken into account in the examination 1. US patent number 3929390, class., 308-10, 1975.

2. US patent N °, class 308-10, 197A (prototype).