SCR power extension control system for direct current motor

A technology of extended control and DC motor, applied in the direction of electronic commutator, etc., can solve the problems of scarcity of high-power DC motor speed control system, limit the scope of application of the system, and difficulty in improving the speed control system, and achieve simple structure, perfect function, Strong anti-interference ability

Inactive Publication Date: 2021-06-18
胡晓莉
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] 1. The existing DC motor control system usually adopts manual control of relay contactor, the control system is complicated, the control precision is low, and it is difficult to improve the speed control system, which limits the scope of application of the system;
[0005] 2. In the application of DC power supply in the existing DC motor contro

Method used

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  • SCR power extension control system for direct current motor

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Embodiment

[0026] see figure 1 , the present invention provides a technical solution: an SCR power expansion control system for DC motors, including DC motors, speed measurement modules, trigger control modules, conversion adjustment modules, PLC control modules, thyristor rectification modules, main power supply, power distribution Box, drive module, microcontroller module, LCD display module, speed control module, digital conversion module, expansion module, upper computer, photoelectric encoder and load:

[0027] The DC motor is interactively connected with the speed measurement module, the speed measurement module is interactively connected with the trigger control module, the trigger control module includes a trigger and a thyristor trigger control receiver, the trigger control module is interactively connected with the conversion adjustment module, and the conversion adjustment module is interactively connected with the PLC control module;

[0028] The DC motor is interactively con...

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PUM

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Abstract

The invention discloses an SCR power extension control system for a direct current motor. The SCR power extension control system comprises a DC motor, a speed measurement module, a trigger control module, a conversion adjustment module, a PLC control module, a thyristor rectifying module, a main power supply, a distribution box, a driving module, a microcontroller module, an LCD display module, a speed regulation module, a digital conversion module, an expansion module, an upper computer, a photoelectric encoder and a load. The field effect transistor is driven through the photoelectric isolating module, a working power supply of the direct current motor is isolated from a working power supply of the driving module, interference of harmonic waves generated by the driving circuit on other circuits is reduced, the reliability of the system is improved, the driving amplifier is utilized to amplify driving current, and the high-power requirement of the direct current motor is met. The problem that a direct-current motor speed regulation system arranged by adopting the driving chip is limited by the driving chip and is only suitable for a low-power direct-current motor due to small driving current is solved.

Description

technical field [0001] The invention relates to the technical field of DC motor control systems, in particular to an SCR power expansion control system for DC motors. Background technique [0002] A DC motor is a motor that converts DC electric energy into mechanical energy. It is widely used in electric drive because of its good speed regulation performance. Regarding the problem of the magnetic field, DC motors are divided into three types according to the excitation method: permanent magnet, separate excitation and self-excitation. Among them, self-excitation is divided into three types: shunt excitation, series excitation and compound excitation. DC motors have the characteristics of good speed regulation performance. The so-called "Speed ​​regulation performance" means that the motor can artificially change the speed of the motor according to the needs under a certain load condition. The DC motor can realize uniform and smooth stepless speed regulation under heavy load ...

Claims

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Application Information

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IPC IPC(8): H02P6/17
CPCH02P6/17
Inventor 胡晓莉
Owner 胡晓莉
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