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HF inducing motor and its speed controller

A speed control device, high-frequency induction technology, applied in the direction of motor speed or torque control, control system, electromechanical device, etc., to achieve the effect of expanding the scope of application

Inactive Publication Date: 2003-05-14
林昌贤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a non-contact high-frequency induction motor to solve the friction shortcomings of the existing ultrasonic motor

Method used

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  • HF inducing motor and its speed controller
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  • HF inducing motor and its speed controller

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Experimental program
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Embodiment Construction

[0026] As shown in the first figure, the high-frequency induction motor of the present invention includes: a group of high-frequency alternating current generators (10), which convert the power supply (1) into high-frequency alternating current; a motor stator (30), which is wound with a conductor stator winding ( 301) (winding), and an inductance symbol is used to represent all stator windings (301); a rotor (20) is also wound with a conductor rotor winding (201), and is connected to a capacitor (40) to form an inductance-capacitance resonance loop. Named resonant tank or resonant tank circuit, this resonant tank is represented by a set of inductance-capacitance loops in Figure 1.

[0027] When the stator winding (301) is supplied with high-frequency alternating current, an alternating magnetic field is generated. When the magnetic field of the stator (30) changes rapidly due to high-frequency alternating current, and its changing frequency is just at or close to the resonanc...

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Abstract

The present invention discloses HF inducing motor and its speed controller. Conducting winding is set in motor rotor and stator, and the rotor winding is connected to capacitor to form resonant loop.When HF alternate current is led into the stator winding, current will generate in the rotor by means of electric induction and electromagnetic resonance and interect with stator magnetic field to rotate motor to solve the friction problem of ultrasonic wave motor. The motor of the present invention can detect its rotation speed via stator winding. The low frequency component in winding voltage or current has frequency proportional directly with the rotation speed and is used in controlling and displaying rotation speed. The present invention also provides motor speed controller comprising simple analog and digital circuit.

Description

technical field [0001] The invention relates to a motor, in particular to a high-frequency motor and a speed control device. Background technique [0002] The earliest motors used by human beings were DC motors (DC motors), but because they had carbon brushes (carbon brushes), they had to be stopped frequently for replacement, which was very inconvenient. After the invention of the induction motor at the end of the 19th century, it has been widely used in the industry for more than a hundred years because of its simple structure and easy maintenance. In recent years, the electronic technology has continued to flourish, and the invention of the frequency converter (inverter) has enabled the AC induction motor to work in different speed ranges. The frequency converter utilizes Variable Voltage Variable Frequency (VVVF) technology to convert high-frequency pulses into low-frequency sine waves in the form of electronic switches. The high-frequency components do not have a rotat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/02
Inventor 林昌贤
Owner 林昌贤
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