CN205265589U

CN205265589U - Two frequency conversion drive circuit's replacement circuit of each other

Info

Publication number: CN205265589U
Application number: CN201521075291.7U
Authority: CN
Inventors: 姚庆
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2015-12-18
Filing date: 2015-12-18
Publication date: 2016-05-25
Anticipated expiration: 2025-12-18

Abstract

The utility model discloses a two frequency conversion drive circuit's replacement circuit of each other, its characterized in that: the replacement circuit include that a return circuit converter, two converters in the return circuit insert select switch's wiring end respectively, select switch's leading -out terminal two motors in a link circuit motor and the return circuit simultaneously. Since the above structure is adopted, the utility model discloses can utilize and not have the out of order converter to come the drive not have out of order motor or fan in addition all the way to the normal operating of implementation system, the further pair frequency conversion drive circuit reliabilities of operation that improve.

Description

The mutual replacement circuit of a kind of pair of frequency conversion drive circuit

Technical field

The utility model relates to the technological improvement of two frequency conversion drive circuit, particularly a kind of two frequency conversion drive electricityThe mutual replacement circuit on road.

Background technology

In industrial application, exist the electric of a lot of frequency conversion drive to drag, for example use the electricity of Frequency Converter ControlThe vehicle, blower fan, water pump that machine drives etc. And the electrical equipment of two frequency conversion drive of the using and the reserved is also deposited in a large number.

In the key equipments such as water (hydraulic pressure etc.) pump class, blower fan, be all designed to the two cover of the using and the reserved redundancy knotStructure, in the time that an equipment breaks down, another equipment can put into operation fast. But, if there is itIn a loop be motor or blower fan (pump) fault; And another one loop is frequency converter break down timeWait, system will still cannot be moved. Because respectively there is equipment to have fault in the loop of this using and the reserved.

For the problems referred to above, a kind of novel mutual replacement circuit is provided, utilize and do not have out of order frequency converterDrive an other road not have out of order motor or blower fan.

Utility model content

Technical problem to be solved in the utility model is that the mutual replacement of a kind of pair of frequency conversion drive circuit is providedCircuit, utilizes and does not have out of order frequency converter to drive an other road not have out of order motor or blower fan.

For achieving the above object, the technical solution of the utility model is, a kind of pair of frequency conversion drive circuit mutuallyReplacement circuit, is characterized in that: described replacement circuit comprises that loop one frequency converter, loop two frequency converters divideDo not access the terminals of selector switch, simultaneously the leading-out terminal of selector switch link circuit one motor and loop simultaneouslyTwo motors.

Described selector switch connects converter parameter switch control unit, converter parameter switch control unitStoring the control parameter of loop one frequency converter and loop two frequency converters.

Described loop one frequency converter, loop two frequency converters open circuit by loop one breaker and loop two respectivelyDevice is linked in power source bus.

Described selector switch is with auxiliary contact.

A mutual replacement circuit for pair frequency conversion drive circuit, owing to adopting above-mentioned structure, the utility modelCan utilize and not have out of order frequency converter to drive an other road not have out of order motor or blower fan, thus realThe normal operation of existing system, further improves two frequency conversion drive circuit reliabilities of operation.

Brief description of the drawings

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail;

Fig. 1 is the structural representation of the mutual replacement circuit of a kind of pair of frequency conversion drive circuit of the utility model;

In Fig. 1,1, power source bus; 2, loop one breaker; 3, loop two breakers; 4, loopOne frequency converter; 5, loop two frequency converters; 6, selector switch; 7, converter parameter switch control unit; 8,Loop one motor; 9, loop two motors.

Detailed description of the invention

In the time occurring respectively having an equipment to break down in two loops in two frequency conversion drive circuit, auxiliary by being withHelp the selector switch 6 of contact that operating loop is switched to an other road and do not have out of order frequency converter and motor, withTime, the auxiliary contact of selector switch will inform that frequency converter is also switched to the parameter of an other motor, then opensMoving frequency converter operation motor.

Emphasis of the present utility model is to select frequency converter difference " layer " by the auxiliary contact of selector switch 6Parameter. Realize the different motor of transducer drive.

Specifically as shown in Figure 1, the utility model comprises that loop one frequency converter 4, loop two frequency converters 5 connect respectivelyEnter the terminals of selector switch 6, simultaneously the leading-out terminal of selector switch 6 link circuit one motor 8 and returning simultaneouslyRoad two motors 9.

Selector switch 6 connects converter parameter switch control unit 7, and converter parameter switch control unit 7 is depositedStoring up the control parameter of loop one frequency converter 4 and loop two frequency converters 5. Loop one frequency converter 4, loop two becomeFrequently device 5 is linked in power source bus 1 by loop one breaker 2 and loop two breakers 3 respectively.

Under normal circumstances, loop one frequency converter 4 drives loop one motor 8; Loop two frequency converters 5 drive loopTwo motors 9. In the time that loop one frequency converter 4 drives one motor 8 loops, loop in running status, loop two frequency conversionsDevice 5 drives the loop of loop two motors 9 just in stand-by state; Equally, when loop two frequency converters 5 driveLoop two motors 9 in the time of running status, the loop that loop one frequency converter 4 drives loop one motor 8 just inStand-by state.

In the time that the loop of operation has motor or frequency converter to break down, just put into operation in another one loop. FromAnd realize the object of these two loop the using and the reserved.

But, for example, when respectively having an equipment to break down in these two loops: loop one frequency converter 4 drivesIn the loop of moving loop one motor 8 there is fault in loop one frequency converter 4, and loop two frequency converters 5 driveIn the loop of loop two motors 9 there is fault in loop two motors 9, by the selector switch 6 with auxiliary contactOperating loop is switched to an other road and does not have out of order loop two frequency converters 5 and loop one motor 8, meanwhile,The auxiliary contact of selector switch 6 will inform that loop two frequency converters 5 are also switched to an other loop one motor 8Parameter (under normal circumstances, what loop two frequency converters 5 were enabled is the parameter of loop two motors 9), then openMoving loop two frequency converter 5 operating loop one motors 8.

By reference to the accompanying drawings the utility model is exemplarily described above, obviously the utility model specific implementationBe not subject to the restrictions described above, if the various improvement that adopted technical solutions of the utility model to carry out, orDirectly apply to other occasion without improvement, all within protection domain of the present utility model.

Claims

1. a mutual replacement circuit for two frequency conversion drive circuit, is characterized in that: described replacement circuit bagDraw together the terminals that loop one frequency converter (4), loop two frequency converters (5) access respectively selector switch (6),The leading-out terminal of selector switch (6) link circuit one motor (8) and loop two motors (9) simultaneously simultaneously.

2. the mutual replacement circuit of a kind of pair of frequency conversion drive circuit according to claim 1, its feature existsIn: described selector switch (6) connects converter parameter switch control unit (7), and converter parameter switchesControl module (7) is being stored the control parameter of loop one frequency converter (4) and loop two frequency converters (5).

3. the mutual replacement circuit of a kind of pair of frequency conversion drive circuit according to claim 1, its feature existsIn: described loop one frequency converter (4), loop two frequency converters (5) pass through respectively loop one breaker (2)Be linked in power source bus (1) with loop two breakers (3).

4. the mutual replacement circuit of a kind of pair of frequency conversion drive circuit according to claim 1, its feature existsIn: described selector switch (6) is with auxiliary contact.