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Direct-current asynchronous motor and driving control method

An asynchronous motor, DC current technology, applied in the direction of AC motor control, electronic commutation motor control, motor generator control, etc., can solve problems such as increased noise, power factor and efficiency decline

Inactive Publication Date: 2013-03-27
张加胜
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AI Technical Summary

Problems solved by technology

The problem is that in the existing AC speed regulation method, the power factor and efficiency decrease when the speed is reduced, and the noise increases

Method used

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  • Direct-current asynchronous motor and driving control method

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Embodiment Construction

[0060] The block diagram of the DC drive device of the asynchronous motor is shown in Figure (8), where 1 is the power supply, such as a battery; 2 is the motor and the detector for detecting its current, speed, etc.; 3 is the controller, and there are Memory, comparator, amplifier and other components are used to store the set current mode, current cycle, amplitude and other data. Receive the real-time signal of the motor running from the detector, compare it with the stored set value, and issue instructions for corresponding operations according to the comparison result. There are also devices and corresponding displays for manually setting the cycle (speed), size, phase sequence (steering) of the current in the controller, and it has a program to provide motor starting, braking and other operations; 4 is the driver, that is, the driving device of the main circuit.

[0061] 1) Chopping main circuit

[0062] The structure of the chopping main circuit is as follows Figure ...

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Abstract

Provided are a direct-current asynchronous motor and a driving control method. The direct-current asynchronous motor comprises a direct-current power supply, a motor, a detector, a driving converter and a controller. The driving control method leads the driving control method to be converted from an alternating-current motor driven by an alternating-current voltage source to the direct-current asynchronous motor driven by a direct-current current source; and a specific achievement scheme of a direct-current current source driving conversion circuit of the direct-current asynchronous motor is disclosed. According to the direct-current asynchronous motor and the driving control method, the performance advantages of the motor and current source driving can be brought into full play, the problems of power factor and efficiency reduction, noise increasing and the like when the alternating-current voltage source drives the asynchronous motor at low speed can be effectively solved, and theoretical basis is supplied to researching of a speed adjustment device of the asynchronous motor and the motor for the electric car which both have super quality and competitive price. The waveform of the direct current capable of leading the direct-current asynchronous motor to work normally and a block diagram of a driving device capable of generating the direct current waveform are further provided.

Description

technical field [0001] The invention proposes an asynchronous motor directly driven by a DC current source and a drive control method, which lays a theoretical foundation for designing and manufacturing a DC asynchronous motor, and can be widely used in fields such as electric vehicles and AC motor speed control devices. [0002] The invention explains how to directly drive an asynchronous motor with a direct current source. This involves two key issues: one is what kind of DC current can generate a rotating magnetic field that rotates at a uniform speed when passing through the stator winding of an asynchronous motor; the other is how to generate the required DC current. Background technique [0003] In recent years, the rapid popularization of automobiles using chemical fuels in our country has produced many environmental problems. Under the situation of rapid increase in the number of automobiles, electric vehicles have attracted widespread attention due to their advanta...

Claims

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Application Information

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IPC IPC(8): H02K17/30H02P25/02H02P25/16H02P21/00
CPCY02T10/641Y02T10/64
Inventor 张加胜邵钟武陈荣
Owner 张加胜
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