CN106014951A

CN106014951A - Energy-saving circulation control system for water pump

Info

Publication number: CN106014951A
Application number: CN201610540647.2A
Authority: CN
Inventors: 孙祝兵; 高鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-11
Filing date: 2016-07-11
Publication date: 2016-10-12

Abstract

The invention relates to an energy-saving circulation control system for a water pump. The energy-saving circulation control system comprises a voltage adjusting module, a D/A conversion module, an input control module, a master controller module and an external display module. The input control module can adjust the working mode. The voltage input is designed to be 12 V-30 V, and after the working mode is set, a single-chip microcomputer adjusts the input voltage through the voltage adjusting module according to a drafted expert rule table by comparing the internal set amount with information fed back by a controlled object. The display module is used for reminding a user of the current working state and the next step of operation. Other components can be added to the external module for enriching system functions of timing, alarming and the like. The energy-saving circulation control system is small in size and low in cost, and the problem that the water flowing speed of a common control system is too high, and consequently the overshoot of the system is too large, and a stable state cannot be easily achieved is solved.

Description

A kind of pump energy saving cyclic control system

Technical field

The invention belongs to Energy Saving Control field, be specifically related to a kind of pump energy saving cyclic control system.

Background technology

Along with the increase of fossil capacity and the development of nuclear power in power system, in order to solve reasonable peaking problem, hydroenergy storage station is the most actively built in countries in the world, pump turbine thus developed rapidly；Pump turbine can realize energy-conservation savings, regulates power surges load, improves the aggregate efficiency of power system, saves the energy.

At present, the commonly used PID of Water-Turbine Engine Adaption control system controls, and this control is simple, and can meet the requirement of most industry process control；But due to big inertia, the feature such as non-linear and uncertain of the hydraulic turbine, hydraulic turbine control system easily occurs that overshoot is big, duration of oscillation length, fluctuation frequently, control the phenomenon such as slowly, traditional PID controls more difficult to improve its Control platform.

Summary of the invention

Technical problem: the problem existed for above-mentioned prior art, the present invention provides a kind of pump energy saving cyclic control system.

Technical scheme: the present invention relates to a kind of pump energy saving cyclic control system, it is characterised in that: include VRM Voltage Regulator Module, D/A modular converter, input control module, main controller module and outside display module；The regulation of the operable pattern of input control module；Voltage In-put design is 12 ~ 30V, and after setting mode of operation, input voltage, by comparing inner setting amount and controlled device feedack, according to the Expert Rules table drafted, is adjusted by single-chip microcomputer by VRM Voltage Regulator Module；Display module prompting user's current operating state and next step operation；External module can add miscellaneous part and enrich systemic-function, such as timing, alarm etc..

The major function of described VRM Voltage Regulator Module is the size of regulation output voltage, changes the water velocity of water pump；It is mainly made up of Pwm controller TL494 and BUCK circuit.

The method have the advantages that

1, present system has that volume is little, low cost, it is to avoid the too fast system overshoot caused of common control system water velocity is excessive, the problem being difficult to arrive stable state.

2, present system can make system overshoot reach 23%, effectively reduces output error, and has stronger capacity of resisting disturbance.

Accompanying drawing explanation

Fig. 1 is present system overall structure block diagram.

Fig. 2 is VRM Voltage Regulator Module fundamental diagram in the present invention.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment further illustrates technical scheme.

As it is shown in figure 1, a kind of pump energy saving cyclic control system, including VRM Voltage Regulator Module, D/A modular converter, input control module, main controller module and outside display module；The regulation of the operable pattern of input control module；Voltage In-put design is 12 ~ 30V, and after setting mode of operation, input voltage, by comparing inner setting amount and controlled device feedack, according to the Expert Rules table drafted, is adjusted by single-chip microcomputer by VRM Voltage Regulator Module；Display module prompting user's current operating state and next step operation；External module can add miscellaneous part and enrich systemic-function, such as timing, alarm etc..

As shown in Figure 2, voltage driven type pulse width modulation controlled integrated circuit TL494 effect in this module is that one frequency of output is constant, the square wave of variable duty ratio, it adjusts the dutycycle of voltage pulse output by comparing difference (referring to the difference of feedback voltage and D/A output voltage) with the size of triangular wave on its pin CT, controls opening and turning off of metal-oxide-semiconductor.

After control module changes the input digital quantity of D/A by single-chip processor i/o mouth, the output voltage of D/A changes the most therewith, voltage difference changes, the voltage pulse output dutycycle also respective change of TL494, then metal-oxide-semiconductor open shutoff frequency shift, the output voltage of BUCK circuit changes therewith, thus changes pumping for water pump speed.

Claims

1. a pump energy saving cyclic control system, it is characterised in that: include VRM Voltage Regulator Module, D/A modular converter, input control module, main controller module and outside display module；The regulation of the operable pattern of input control module；Voltage In-put design is 12 ~ 30V, and after setting mode of operation, input voltage, by comparing inner setting amount and controlled device feedack, according to the Expert Rules table drafted, is adjusted by single-chip microcomputer by VRM Voltage Regulator Module；Display module prompting user's current operating state and next step operation；External module can add miscellaneous part and enrich systemic-function, such as timing, alarm etc..