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Digitalized alternating-current voltage and speed regulation device

A technology of speed regulation device and AC voltage regulation, which is applied to the deceleration device of AC motor, AC motor control, emergency protection circuit device, etc. Easy to debug effects

Active Publication Date: 2011-09-14
SHANGHAI ZHIDA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is impossible for analog control

Method used

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  • Digitalized alternating-current voltage and speed regulation device
  • Digitalized alternating-current voltage and speed regulation device
  • Digitalized alternating-current voltage and speed regulation device

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Embodiment Construction

[0069] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solutions of the present invention in detail.

[0070] 1. Overall Design Scheme

[0071] 1.1 System functions

[0072] Based on the requirements of the current market and on-site use environment, an all-digital voltage regulation and speed regulation system is developed on the basis of the original analog voltage regulation and speed regulation system. The basic functions of the system are as follows:

[0073] (1) Digital control can improve the stability of the system and avoid parameter drift caused by amplifier zero drift and potentiometer vibration.

[0074] (2) Easy to debug, you can directly input parameters with a PC through the man-machine interface, or set parameters through the shortcut keys on ...

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Abstract

The invention provides a digitalized alternating-current voltage and speed regulation device. The digitalized alternating-current voltage and speed regulation device comprises an input signal interface circuit and an output signal interface circuit of a power circuit, a pulse trigger circuit, a key and menu display circuit and singlechips ATmega128 and ATmega8. According to the requirements of the present market and the on-site use environment, a full-digital voltage and speed regulation system is developed based on the original analog quantity voltage and speed regulation system. The system has the following basic functions: (1) due to digitalized control, the stability of the system is enhanced, and drifting of parameters due to null shifting of an amplifier and vibration of a potentiometer can be avoided; 2) the system is convenient to debug, the parameter can be directly input by using a personal computer (PC) through a human-machine interface or the parameter can be configured bya shortcut key of a control panel, the operation is quick and the debugging time can be shortened; 3) the human-machine interface monitors working states such as current, voltage, speed and the like during running of a motor in real time; and 4) by fault self-diagnosis and memory monitoring functions, the control panel displays a type code of a fault when the system is faulted, so that a user canfind out the fault conveniently.

Description

technical field [0001] The invention relates to an AC voltage regulating and speed regulating device, in particular to a digital AC voltage regulating and speed regulating device with high precision, good dynamic performance, wide speed regulating range and small voltage fluctuation. Background technique [0002] In the early 1990s, in the crane motor speed control system, the ASTAT9 analog AC stator voltage regulation and speed regulation control system produced by ABB Company, and the 6RS series analog quantity AC stator voltage regulation and speed regulation control system produced by Germany's Siemens Company were widely used. The AC stator voltage regulation and speed regulation control system is a mature thyristor phase crane motor control system. [0003] Its control method adopts analog quantity control method, each parameter of the system is adjusted by potentiometer, and signal display adopts light-emitting diode. The system adopts a double closed-loop system com...

Claims

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Application Information

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IPC IPC(8): H02P23/00H02P1/40H02P3/20H02H7/08H02P25/16
Inventor 王展英刘成龙许成马有亮孙晶
Owner SHANGHAI ZHIDA ELECTRONICS
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