CN205265583U

CN205265583U - Reversible bidirectional thyristor induction motor system of three -phase with dynamic braking

Info

Publication number: CN205265583U
Application number: CN201521123577.8U
Authority: CN
Inventors: 吴强; 赵翼
Original assignee: Tianjin Fu Ruida Electrical Complete Equipment Engineering Co Ltd
Current assignee: Tianjin Fu Ruida Electrical Complete Equipment Engineering Co Ltd
Priority date: 2015-12-28
Filing date: 2015-12-28
Publication date: 2016-05-25
Anticipated expiration: 2025-12-28

Abstract

The utility model provides a reversible bidirectional thyristor induction motor system of three -phase with dynamic braking, including major loop and control circuit, the major loop includes isolator QS, electric leakage circuit breaker QF, bidirectional thyristor, electrothermal relay FR, bidirectional thyristor 1SK, 2SK, 3SK and normally open contact KA1 constitute motor corotation return circuit, bidirectional thyristor 4SK, 5SK, 6SK and normally open contact KA2 constitute motor reversal return circuit, bidirectional thyristor 7SK, 8SK, KA3 and unidirectional thyristor VD constitute the dynamic braking return circuit. The utility model discloses the major loop adopts the bidirectional thyristor to replace the contactor, have energy -conservation, sparkless, longe -lived, maintain portably, be fit for the use of the blast proof occasion of needs, control circuit adopts the singlechip to control, and the reliability is high, the strong convenient to use of interference killing feature, and the programming is simple, powerful, the maintenance work volume is little, and easy maintenance is with low costs, the practicality is strong.

Description

A kind of reversible bidirectional thyristor induction motor system of three-phase with dynamic braking

Technical field

The utility model belongs to automation field, and especially relating to a kind of three-phase with dynamic braking canContrary bidirectional thyristor induction motor system.

Background technology

Traditional machine operation process adopts electromagnetic contactor control, and electromagnetic contactor is easily long service timeCause electric leakage, occur spark, the situation such as the life-span is short, and need pulse-triggered, the anti-interference energy of systemPower is low, and system complex is safeguarded inconvenience, and production cost is high, along with intelligent development is more and more faster, and profitBy intelligentized mode control machine operation, realizing automation control is also the focus that people study. ExistingIn technology, be very important link to the braking of reversible operation induction machine, how realize simple, efficientBraking make control procedure convenient be also research emphasis.

Summary of the invention

In view of this, the utility model is intended to propose a kind of reversible two-way brilliant lock of three-phase with dynamic brakingPipe induction motor system, realizes and adopts relay to control rotating and dynamic braking, withoutAdditional triggering power supply, makes system become simple.

For achieving the above object, the technical solution of the utility model is achieved in that

The reversible bidirectional thyristor induction motor system of three-phase with dynamic braking, comprises major loopAnd control loop,

Described major loop comprises isolating switch QS, RCCB QF, bidirectional thyristor, electrothermal relayFR, the first electricity grade A1 of described bidirectional thyristor is connected in the stator winding of alternating current generator M, described twoBetween the controlled stage G of IGCT and the second electrode A 2, be connected to relay normally open contact KA1, KA2, KA3,The second electrode A 2 of described bidirectional thyristor connects RCCB QF; Described bidirectional thyristor 1SK,2SK, 3SK and relay normally open contact KA1 composition motor forward loop; Described bidirectional thyristor 4SK,5SK, 6SK and relay normally open contact KA2 composition motor reversion loop; Described bidirectional thyristor7SK, 8SK, KA3 and unidirectional thyristor VD composition dynamic braking loop;

Described control loop comprises shift knob SB1, SB2 and linked switch SB3, normally closed linked switchSB3 and described switch S B2, normally-closed contact KA3, KA1, relay coil KA2 and normally opened contact KA2Form the first branch road; Normally closed linked switch SB3 and described switch S B1, normally-closed contact KA3, KA2, continueElectric apparatus coil KA1 and normally opened contact KA1 form the second branch road; The moving switch S B3 of Chang Kailian and time continueElectrical equipment, normally-closed contact KA2, KA1, relay coil KA3 and normally opened contact KA3 form the 3rd branch road.

Further, described alternating current generator M is three phase alternating current motor, and each stator winding one end connects respectivelyIn the first electricity grade A1 of first, second, third bidirectional thyristor.

Further, between described bidirectional thyristor the first electrode A 1 and the second electrode A 1, being connected to capacitance-resistance inhalesRegain road.

Further, between described control loop and power supply, be provided with fuse FU, electrothermal relay FR.

With respect to prior art, a kind of three-phase with dynamic braking described in the utility model is reversible two-wayIGCT induction motor system has following advantage: the utility model major loop adopts bidirectional thyristor to getPickup tentaculum, without triggering power supply, realizes the forward and backward of motor, has energy-conservation, no-spark, life-spanLong, easy maintenance, be applicable to the explosion-proof occasion of needs and use; Control loop adopts miniature relay to triggerTwo-way brilliant lock, to forward, reversion, three loops of energy consumption control are respectively with a relay, outside not needingAdd numerous and diverse triggering power supply and make system become very simple, antijamming capability improves, easy maintenance. This isThe features such as system has contactless, no-spark, energy-conservation, easy to maintenance, long service life, can be widely used inThe every profession and trades such as metallurgy, mine, chemical industry, light industry.

Brief description of the drawings

The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model,Schematic description and description of the present utility model is used for explaining the utility model, does not form this realityWith novel improper restriction. In the accompanying drawings:

Fig. 1 is a kind of reversible two-way brilliant lock of three-phase with dynamic braking described in the utility model embodimentThe structural representation of the major loop of pipe induction motor system;

Fig. 2 is a kind of reversible two-way brilliant lock of three-phase with dynamic braking described in the utility model embodimentThe structural representation of the control loop of pipe induction motor system.

Detailed description of the invention

It should be noted that, in the situation that not conflicting, in embodiment and embodiment in the utility modelFeature can mutually combine.

In description of the present utility model, it will be appreciated that term " " center ", " longitudinally ", " horizontal strokeTo ", " on ", D score, 'fornt', 'back', " left side ", " right side ", " vertically ", " waterFlat ", orientation or the position relationship of indicating such as " top ", " end ", " interior ", " outward " they are based on attachedOrientation shown in figure or position relationship, be only the utility model and simplified characterization for convenience of description, and notBe instruction or the hint device of indication or element must there is specific orientation, with specific orientation structure andOperation, therefore can not be interpreted as restriction of the present utility model. In addition term " first ", " second ",For describing object, and can not be interpreted as instruction or hint relative importance or the implicit indication that indicates Deng onlyThe quantity of the technical characterictic showing. Thus, the feature that is limited with " first ", " second " etc. can be expressedOr impliedly comprise one or more these features. In description of the present utility model, unless separately hadIllustrate, the implication of " multiple " is two or more.

In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited,Term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with,Also can be to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection;Can be to be directly connected, also can indirectly be connected by intermediary, can be the company of two element internalsLogical. For the ordinary skill in the art, can understand above-mentioned term at this by concrete conditionConcrete meaning in utility model.

Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.

As shown in Figure 1, 2, a kind of reversible bidirectional thyristor induction conductivity of three-phase with dynamic brakingSystem, comprises major loop and control loop,

Described alternating current generator M is three phase alternating current motor, and each stator winding one end is connected to first,Two, first of the 3rd bidirectional thyristor the electricity grade A1.

Between described bidirectional thyristor the first electrode A 1 and the second electrode A 1, be connected to resistance-capacitance absorption loop.

Between described control loop and power supply, be provided with fuse FU, electrothermal relay FR. .

The utility model has been realized the forward and backward control to motor, in the time of combination switch button SB1, selectsForward switches on power, and relay coil KA1 obtains electric, and normally opened contact KA1 closure is connected forward loop,Motor is started working, and in the time of combination switch button SB2, selects reversion, switch on power, and relay coil KA2Must be electric, normally opened contact KA2 closure, connects reversion loop, and motor is started working, while closing button SB3,Electric motor circuit breaking, engage relay KA3 simultaneously, time relay KT, drops into dynamic braking, electronicWhen machine is stopped transport, motor a phase, b phase stator winding are merged into a winding, after the series connection of c phase winding,By a phase power supply, series connection winding is powered, do the direct current of stator winding through single-phase IGCT VD halfwave rectifierMagnetoelectricity stream, motor is done engine operation, current sinking in rotor, reaches dynamic braking, the timeRelay K T is according to preset time disjunction, and dynamic braking finishes, and motor is out of service.

The foregoing is only preferred embodiment of the present utility model, not new in order to limit this practicalityType, all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improveDeng, within all should being included in protection domain of the present utility model.

Claims

1. there is the reversible bidirectional thyristor induction motor system of three-phase of dynamic braking, its featureBe: comprise major loop and control loop,

2. a kind of reversible bidirectional thyristor sense of three-phase with dynamic braking according to claim 1Induction motor system, is characterized in that: described alternating current generator M is three phase alternating current motor, each stator windingOne end is connected to the first electricity grade A1 of first, second, third bidirectional thyristor.

3. a kind of reversible bidirectional thyristor sense of three-phase with dynamic braking according to claim 1Induction motor system, is characterized in that: described bidirectional thyristor the first electrode A 1 and the second electrode A 1 itBetween be connected to resistance-capacitance absorption loop.

4. a kind of reversible bidirectional thyristor sense of three-phase with dynamic braking according to claim 1Induction motor system, is characterized in that: between described control loop and power supply, be provided with fuse FU, heat continuesElectrical equipment FR.