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Separately excited DC motor soft starter based on XE164FN

A technology of XE164FN and DC motor, which is applied in the direction of single DC motor starter, motor generator/starter, AC motor deceleration device, etc., which can solve the problem of power supply voltage drop, abnormal wear of mechanical transmission parts, accelerated equipment aging, etc. problem, to achieve the effects of small inrush current and inrush torque, easy failure and maintenance, and personal safety protection

Inactive Publication Date: 2016-04-13
南京恒誉名翔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This excessive starting current will cause the power supply voltage to drop suddenly, which will affect the normal and safe operation of the load connected to the same power supply. At the same time, the motor winding will be damaged due to overheating or the overcurrent protection device will operate, cut off the power supply, and cannot start.
The starting torque generated by the DC motor will cause electrical and mechanical damage to the motor and the equipment it drives, causing abnormal wear of mechanical transmission components, accelerating equipment aging, and shortening the service life of the equipment.
Since the DC motor works in various occasions, and the working environment is poor, and the performance requirements are high, therefore, for a DC motor with a large power, it cannot be started directly, and a soft starter device must be installed.

Method used

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  • Separately excited DC motor soft starter based on XE164FN
  • Separately excited DC motor soft starter based on XE164FN

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] combine figure 1 , figure 1 It is the hardware block diagram of the soft starter. The system mainly includes hardware and software. The hardware circuit is the main control circuit, including the main circuit and the control circuit. The main circuit uses IGBT as the core, and the PWM DC chopper circuit. Receive the PWM pulse signal, make the IGBT turn on and off intermittently, change the duty ratio of the PWM signal, control the average value of the voltage applied to both ends of the armature winding of the DC motor, and control the soft start of the motor. The control circuit includes a display circuit, Regulator circuit.

[0018] The control circuit uses a single-chip microcomputer as the control core, and a port of the single-chip microcomputer outputs a PWM signal to drive the IGBT through the drive circuit. When calculating the maximum value, the microcontroller sends a signal to disconnect the voltage at both ends of the DC motor.

[0019] The display circu...

Embodiment 2

[0033] combine figure 2 , figure 2 It is the main program flow chart of the system. The system starts to run. First, the system is initialized. The initialization includes the initialization of the display module, AD module, timer and PCA (PWM pulse generation module). After the system is initialized, the armature current must be detected, and the armature current exceeding 1.5 times the rated current cannot be allowed to be generated in the motor. After the current detection, if there is a fault, perform fault handling until the fault is eliminated, then set and run the system parameters, and then turn on the interrupt, then perform current detection, and eliminate the fault when a fault occurs, and finally the duty cycle reaches 1, The startup is over.

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PUM

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Abstract

The invention discloses a separately excited DC motor soft starter based on XE164FN, and meets the demands of a DC motor for better reliability, durability and durableness in different environments. A soft start circuit of the soft starter mainly consists of a control circuit, a drive circuit, and a PWM chopper circuit. The core of the control circuit is an XE164FN single-chip microcomputer, and the core part of the PWM circuit is an IGBT. The XE164FN single-chip microcomputer generates a triggering pulse according to a program instruction, and controls the on / off of the IGBT through the drive circuit, thereby controlling an armature loop voltage, enabling the mean value of the armature loop voltage to be gradually increased and finally to reach a rated voltage, and achieving a purpose of soft start.

Description

technical field [0001] The invention relates to a motor starting controller, in particular to a soft starter for a separately excited DC motor based on XE164FN. Background technique [0002] During the operation of the motor, the startup of the motor has a great impact on the service life of the equipment. Therefore, whether the starting problem of the motor can be solved is of great significance to the operation of the motor. If the rated voltage is directly applied to the DC motor at startup, an inrush current nearly ten times the rated current will be generated. This excessive starting current will cause the power supply voltage to drop suddenly, which will affect the normal and safe operation of the load connected to the same power supply. At the same time, the motor winding will be damaged due to overheating or the overcurrent protection device will operate, cut off the power supply, and cannot start. The starting torque generated by the DC motor will cause electrical...

Claims

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Application Information

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IPC IPC(8): H02P1/18
Inventor 李相武王瑛李忠喜
Owner 南京恒誉名翔科技有限公司
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