CN2224433Y - Fuzzy energy-saving controller - Google Patents

Abstract

The utility model relates to a fuzzy energy-saving controller, which is especially suitable for controlling the asynchronous motor. The utility model comprises a voltage transformer (BT2) and a current transformer (BT1), a power factor of detector which is used for receiving the detecting information of the voltage transformer (BT2) and the current transformer (BT1), a monochip computer used for processing the information of voltage and current and figuring out the phase difference and change among pulses, as well as a trigger and a controller. The fuzzy energy-saving controller for a motor is integrated modern power electronics, intelligent, and controlling technology into one whole, and the utility model has the advantages of low cost, simple repair, reliable operation and conspicuous power saving effect.

Description

Fuzzy energy-saving controller

The utility model relates to a kind of fuzzy energy-saving controller, especially be applicable on the Energy Saving Control to asynchronous motor.

From All Around The World, the crisis of the energy does not obtain relaxing, and taps a new source of energy and energy savings, to cut down the consumption of energy all be crucial.

In today that the present national economy of China develops rapidly, it is more outstanding that energy savings just seems.Country pays much attention to the work of exploitation and energy savings, has proposed " development and the energy-conservation energy policy that develops simultaneously " very early.

An energy-conservation importance is economized on electricity exactly, more more specifically, is exactly how power-saving running of motor.Because motor applications is extremely wide, power consumption also is very surprising.According to statistics, China's motor total power consumption accounts for 60% of national gross generation, and operational efficiency is well below developed country.

If the motor to long-term zero load, underloading carries out reducing energy consumption, the benefit of economize on electricity will be very considerable.The 6.6th regulation of GB GB12497: " motor of varying duty operation, longer when the no-load running time, and the load factor of light running should adopt voltage-regulating and electricity-saving less than 30% o'clock ".

Motor moves under long-term zero load and light condition, and power factor is very low, and this not only makes motor itself waste a large amount of electric energy, and the transmission lines of electric energy, the efficient of generating set are reduced greatly, and loss increases.Therefore manage to improve the power of electric motor factor, it is very necessary making motor operate in the good energy-conservation state.

All there are different electrical machine energy-saving controller products in the U.S., Britain, Japan at present, but all expensive because of its price, maintenance level requirement height is difficult to popularize in China.

The purpose of this utility model provides a kind of fuzzy energy-saving controller of motor that modern electric, electronic technology, intellectual technology and modern control technology are one that collects, and is fit to the national conditions of China, and cost is low, and is easy to maintenance, reliable, and power savings is remarkable.

The purpose of this utility model is achieved through the following technical solutions.

A kind of fuzzy energy-saving controller, comprise voltage transformer (VT) (BT2), current transformer (BT1), comprise that also is used to accept the power factor detecting device 102 that the voltage transformer (VT) summation current transformer detects information, one is used for the voltage after the power factor detector processes, the pulse signal of electric current carries out Fuzzy processing and obtains the phase differential between the pulse and the one-chip computer 101 of rate of change, one is used to accept the one-chip computer fuzzy operation and judges the modulator 104 that 103, one trigger pips of sending according to trigger of trigger of motor operation variation tendency signal are adjusted motoring.The power factor detecting device be one comprise mainly by operational amplifier (A1, A2, A3, A4, A5) and photoelectrical coupler (TD1, TD2) analog to digital conversion circuit of Zu Chenging.Trigger is by three-phase synchrotrans (BG6), and three-phase trigger circuit plate (SDKCZ7) is formed.Modulator is that (KSA, KSB KSC) form by thyristor.Have one be used for tracing trouble, be arranged between 380 volts of three-phase alternating-current supplies and the one-chip computer, voltage signal transmitter 105.The voltage signal transmitter is made up of two three-phase voltage signal transmitters.

The utility model is made up of novel " 8098 " microcontroller system, power electronics type power factor detecting device, trigger, modulator and modern fuzzy control technology software etc.This device can be by the running status that detects the timely reaction motor of link, the situation of change of load.One-chip computer relies on detected information, under the support of fuzzy control software, imitates reasoning, the arbitration functions of human brain, and motor is controlled, and makes motor operate in the good energy-conservation state in time.

The utility model is specially adapted to the motor in those occasions that often are in underloading, discontinuity load and low load with strong power, can make these motor be in the good energy-conservation state, saves a large amount of electric energy.

The utility model is simple in structure, cost is low, easy to maintenance, easy grasp, reliable, energy-saving effect is remarkable, is fit to the present national conditions of China.

Description of drawings:

Fig. 1 is a power factor detection system schematic diagram.

Fig. 2 is the Single Chip Microcomputer (SCM) system software architecture diagram.

Fig. 3 is three-phase synchronous triggering system, regulator control system schematic diagram.

Fig. 4 is the schematic diagram of steady pressure of system power supply.

Fig. 5 is a functional-block diagram of the present utility model.

Fig. 6 is the positive external form figure of structure of the present utility model.

Fig. 7 is back side external form figure of the present utility model.

Symbol description among the figure:

JD, motor KS, thyristor

BT1, current transformer BT2 voltage transformer (VT)

BT3, BT4, three-phase voltage signal transmitter

BT5, system power supply transformer

SDKCZ7, three-phase trigger circuit plate

A1-A5, operational amplifier

R1-R16,1/8 watt resistance

C1-C4, be 0.1 μ F electric capacity

D1-D2, diode

TD1-TD2, photoelectrical coupler

CA1-CA6, CB1-CB6, CC1-CC6, power supply filter capacitor

RA1-RA4, RB1-RB4, RC1-RC4, resistor

CZ, rectification circuit

" 7805 ", " 7815 ", " 7824 " direct-flow positive voltage mu balanced circuit

" 7905 ", " 7915 ", " 7924 " negative DC voltage mu balanced circuit

1, master control borad 2, printer

3, print record 4, keyboard

5, voltage table 6, reometer

11, master switch 12, load start button

13, time book indication 14, light-emitting diode display

15, fan 16, quick fuse cutout

17, terminal strip

Below in conjunction with description of drawings the utility model embodiment:

Shown in accompanying drawing (5), the operation conditions of motor JD is realized gathering in real time by BT3 and BT4 voltage transmitter, and the information that collects is sent to " 8098 " microcontroller system, the also one-chip computer of available other model.Computing machine is analyzed the running status of motor under the support of its software.If normal, motor JD continues operation.If undesired, then computing machine can send order out of service and warning, and wait is fixed a breakdown.

The utility model detects the load variations situation of motor JD in real time by current transformer BT1, and detected information is delivered to the power factor detecting device.The power factor detecting device is sent to the result in " 8098 " microcontroller system and goes after the information that sends is carried out a series of processing, waits for that computing machine goes to handle.

Voltage transformer (VT) BT2 is that the mains voltage variations situation to motor detects in real time, and detected information is sent to the power factor detecting device, after the power factor detector processes, the result is delivered in " 8098 " one-chip computer and go, wait for that computing machine goes to handle.

" 8098 " one-chip computer is the voltage after the power factor detector processes, the pulse signal of electric current, further carry out Fuzzy processing, under the support of fuzzy control software, obtain two phase differential (being power factor) between the pulse, reach parameters such as rate of change.Judge the trend that motor operation changes through fuzzy operation, " 8098 " microcontroller system is adjusted the running status of motor automatically by trigger, modulator then, makes motor operate in the good energy-conservation state.

Claims (7)

1, a kind of fuzzy energy-saving controller, comprise voltage transformer (VT) (BT2), current transformer (BT1), it is characterized in that also comprising that is used to accept the power factor detecting device that the voltage transformer (VT) summation current transformer detects information, one is used for the voltage after the power factor detector processes, the pulse signal of electric current carries out Fuzzy processing and obtains the phase differential between the pulse and the one-chip computer of rate of change, one is used to accept the trigger that the one-chip computer fuzzy operation is judged motor operation variation tendency signal, and a trigger pip of sending according to trigger is adjusted the modulator of motoring.

2, according to the fuzzy energy-saving controller of claim 1, it is characterized in that the power factor detecting device be one comprise mainly by operational amplifier (A1, A2, A3, A4, A5) and photoelectrical coupler (TD1, TD2) analog to digital conversion circuit of Zu Chenging.

3,, it is characterized in that one-chip computer is to be 8098 according to the fuzzy energy-saving controller of claim 1 or 2.

4, according to the fuzzy energy-saving controller of claim 1, it is characterized in that trigger is by three-phase synchrotrans (BG6), three-phase trigger circuit plate (SDKCZ7) is formed.

5,, it is characterized in that modulator is that (KSA, KSB KSC) form by thyristor according to the fuzzy energy-saving controller of claim 1.

6, according to the fuzzy energy-saving controller of claim 1 or 2 or 4 or 5, it is characterized in that also having one be used for tracing trouble, be arranged between 380 volts of three-phase alternating-current supplies and the one-chip computer, the voltage signal transmitter.

7,, it is characterized in that the voltage signal transmitter is made up of two three-phase voltage signal transmitters according to the fuzzy energy-saving controller of claim 6.

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