CN208924132U - Circuit protective device and rectifier equipment - Google Patents

Abstract

It includes: rectification module, filter module, switch module, positive direct-current bus and negative DC bus that the embodiment of the present application, which provides a kind of circuit protective device and rectifier equipment, the circuit protective device,；Rectification module includes exchange side and DC side；The anode connection of the DC side of the first end of filter module and the second end of switch module and rectification module, the first end and negative DC bus of second end and switch module connect, and third end is connect with positive direct-current bus；The cathode of the DC side of rectification module and the first end of switch module connect.In the embodiment of the present application, after fault occurs for certain a part in circuit system, current path can be automatically switched, while guaranteeing that circuit system operates normally, fault is isolated, ensure that the stable operation of circuit system, reduces circuit cost of investment and circuit loss.

Description

Circuit protective device and rectifier equipment

Technical field

This application involves electronic technology fields, specifically, this application involves a kind of circuit protective device and rectifier equipments.

Background technique

It is generally in parallel using multimode input series and output parallel circuit or multimode input in current rectification circuit Series circuit is exported, part in series voltage class is higher, and each module, which mostly uses, does not control bridge or controllable bridge circuit adds high pressure high frequency Transformer is isolated, transformation.However, open-circuit fault occurs for any one module in multimode circuit, so that entire series electrical Road does not have electric current, cisco unity malfunction, and entire circuit system is just paralysed.

Open circuit failure damages entire circuit system in order to prevent, and present inventor recognizes existing solution Certainly there are two types of modes, one is bridge or controllable bridge portion parallel connection absorption resistance is not controlled in circuit system, caused voltage is reduced Spike；Another kind is the capacitance by increasing rear class Absorption Capacitance, to reduce the mutation value of voltage.

However, present inventor has found after study, above two mode improves circuit cost of investment, increases Circuit loss reduces the reliability of circuit system.

Utility model content

The application is directed to the shortcomings that existing way, proposes a kind of circuit protective device and rectifier equipment, existing to solve Technology is there are circuit cost of investment is excessively high, and circuit loss is excessive, the not high technical problem of circuit system stability.

First aspect, the embodiment of the present application provide a kind of circuit protective device, comprising:

Rectification module, filter module, switch module, positive direct-current bus and negative DC bus；

Rectification module includes exchange side and DC side；

The anode connection of the DC side of the first end of filter module and the second end of switch module and rectification module, second end It is connect with the first end of switch module and negative DC bus, third end is connect with positive direct-current bus；

The cathode of the DC side of rectification module and the first end of switch module connect.

The second aspect, the embodiment of the present application provide a kind of rectifier equipment, comprising: rectification main circuit and first aspect mention The circuit protective device of confession.

Technical solution bring advantageous effects provided by the embodiments of the present application include:

In the embodiment of the present application, cooperated jointly using filter module and switch module, when occurring fault in circuit, Automatically switch current path, while guaranteeing that circuit system operates normally, fault is isolated, ensure that circuit system Stable operation, it is not necessary to increase absorption resistance or increase Absorption Capacitance capacitance, reduce circuit cost of investment and circuit loss, Improve the stability and reliability of circuit system.

The additional aspect of the application and advantage will be set forth in part in the description, these will become from the following description It obtains obviously, or recognized by the practice of the application.

Detailed description of the invention

The application is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments Obviously and it is readily appreciated that, in which:

Fig. 1 is a kind of structural schematic diagram of circuit protective device provided by the embodiments of the present application；

Fig. 2 is the structural schematic diagram of another circuit protective device provided by the embodiments of the present application；

Fig. 3 is the structural schematic diagram of another circuit protective device provided by the embodiments of the present application；

Fig. 4 is a kind of structural schematic diagram of rectifier equipment provided by the embodiments of the present application.

Description of symbols:

101- rectification module, 102- filter module, 103- switch module, 104- positive direct-current bus, the negative DC bus of 105-, 1011- exchange side, 1012- DC side, 1021- current limiting device, 1022- absorb device, 1031- thyristor, 1032- controller, 10- circuit protective device and 401- rectification main circuit.

Specific embodiment

The application is described below in detail, the example of embodiments herein is shown in the accompanying drawings, wherein identical from beginning to end Or similar label indicates same or similar component or component with the same or similar functions.In addition, if known technology Detailed description the application shown is characterized in unnecessary, then omit it.Below with reference to attached drawing description Embodiment is exemplary, and is only used for explaining the application, and cannot be construed to the limitation to the application.

Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in the application fields.Should also Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art The consistent meaning of meaning, and unless idealization or meaning too formal otherwise will not be used by specific definitions as here To explain.

First to this application involves several nouns be introduced and explain:

Rectification circuit is the circuit for AC energy being converted to direct current energy.

Rectifier equipment is the device for alternating current being converted into direct current, can be used for power supply unit and detecting wireless electric signal Deng.

Due to voltage spikes refers to the instantaneous too high voltages that circuit occurs in connection, disconnection inductive load or bulk loads.

Present inventor carries out the study found that currently in order to preventing open circuit failure from causing to entire circuit system Damage, and use solution in, improve circuit cost of investment, increase circuit loss, reduce circuit system Reliability.

Circuit protective device and rectifier equipment provided by the present application, it is intended to solve the technical problem as above of the prior art.

How the technical solution of the application and the technical solution of the application are solved with specifically embodiment below above-mentioned Technical problem is described in detail.

The embodiment of the present application provides a kind of circuit protective device, and Fig. 1 is the knot of circuit protective device provided by the present application Structure schematic diagram, as shown in Figure 1, the circuit protective device 10 include: rectification module 101, filter module 102, switch module 103, Positive direct-current bus 104 and negative DC bus 105.

Rectification module 101 includes exchange side 1011 and DC side 1012；The first end and switch module of filter module 102 The first end of the anode connection of the DC side 1012 of 103 second end and rectification module 101, second end and switch module 103 and Negative DC bus 105 connects, and third end is connect with positive direct-current bus 104；The cathode of the DC side 1012 of rectification module 101 with open Close the first end connection of module 103.

It should be noted that rectification module 101 includes exchange side 1011 and DC side 1012, it will exchange what side 1011 inputted Alternating current is rectified so that DC side 1012 export direct current, rectification module can using it is in the prior art do not control bridge or Controllable bridge circuit is realized.DC side 1012 is connect with positive direct-current bus 104 and negative DC bus 105.In order to avoid due to open circuit Caused by entire circuit system damage, rectification module 101 is accessed into filtering mould 102 and switch module in the embodiment of the present application 103, then access positive direct-current bus 104 and negative DC bus 105.

In the embodiment of the present application, after fault occurs for certain a part in circuit system, electric current road can be automatically switched Fault is isolated while guaranteeing that circuit system operates normally, ensure that the stable operation of circuit system, subtract by diameter Circuit cost of investment and circuit loss are lacked.

Circuit protective device 10 provided by the above embodiment is described in detail below with reference to specific example.

Fig. 2 is the structural schematic diagram of another circuit protective device, as shown in Fig. 2, circuit provided by the above embodiment is anti- Filter module 102 in protection unit 10 may include: the current limiting device 1021 and absorption device 1022 of series connection.

The DC side 1012 of one end of current limiting device 1021 and the second end of switch module 103 and rectification module 101 is just Pole connection, the other end are connect with the one end and positive direct-current bus 104 for absorbing device 1022；Absorb device 1022 the other end with open The first end and negative DC bus 105 for closing module 103 connect.

Optionally, above-mentioned current limiting device 1021 may include at least one inductance, and absorbing device 1022 may include at least One capacitor.When the number of capacitor is more than two, more than two capacitor serial or parallel connections or series-parallel connection.

Fig. 3 is the structural schematic diagram of another circuit protective device provided by the embodiments of the present application, as shown in figure 3, this Shen Please embodiment provide circuit protective device 10 in switch module 103 may include thyristor 1031 and controller 1032.It is brilliant The anode of brake tube 1031 connect with the anode of controller 1032, the first end of the positive and filter module 102 of thyristor 1031 and The anode connection of the DC side 1012 of rectification module 101；The cathode of thyristor 1031 is connect with the cathode of controller 1032, brilliant lock The cathode of pipe 1031 is connect with the cathode of the second end of filter module 102 and the DC side 1012 of rectification module 101.

It should be noted that thyristor 1031 when circuit system operates normally, due to the effect of backward voltage, is in disconnected Open state.When open-circuit fault occurs for certain a part in circuit, controller 1032 controls thyristor 1031 and is connected, and mentions for circuit For current path, so that the current limiting device and absorption device in circuit form current loop, the generation due to due to voltage spikes is avoided It is damaged caused by entire circuit system.

Under circuit system normal operating conditions, for switch module 103 since backward voltage effect is in an off state, process is whole The direct current that flow module 101 rectifies exports after being filtered by filter module 102 to positive direct-current bus 104 and negative DC bus 105.

When fault occurs for 101 part of rectification module in circuit system, for example, certain is opened in rectification module Road, 103 moment of switch module is in the conductive state, meanwhile, circuit automatically switches.Current limiting device in filter module 102 will be by Current limliting is carried out in the transient current that fault generates, which can be inductance, and then the absorber in filter module Part absorbs transient current, which can be capacitor, prevents the generation of due to voltage spikes, fault is isolated, The normal operation for guaranteeing entire circuit system avoids due to voltage spikes damage caused by circuit.

Event occurs for the circuit or electronic component that middle positive direct-current bus 104 or negative DC bus 105 in circuit system connect When barrier, for example, a certain electronic component, which is burnt, leads to that open-circuit fault occurs, 103 moment of switch module is in the conductive state, meanwhile, Circuit automatically switches.The transient current generated due to fault is carried out current limliting, the electricity by the current limiting device in filter module 102 Flowing device can be inductance, and then the absorption device in filter module absorbs transient current, which can be capacitor, The generation for preventing due to voltage spikes, fault is isolated, and is guaranteed the normal operation of entire circuit system, is avoided due to voltage spikes It is damaged caused by circuit.

Based on the same inventive concept, the embodiment of the present application provides a kind of rectifier equipment, and Fig. 4 provides for the embodiment of the present application A kind of rectifier equipment structural schematic diagram, as shown in figure 4, the rectifier equipment includes rectification main circuit 401 and above-described embodiment The circuit protective device 10 of middle offer, rectification main circuit 401 are electrically connected with circuit protective device 10 by conducting wire, circuit protection dress 10 faults for protection circuit system are set, fault loss caused by electric system is avoided.

Those skilled in the art of the present technique have been appreciated that in the application the various operations crossed by discussion, method, in process Steps, measures, and schemes can be replaced, changed, combined or be deleted.Further, each with what is crossed by discussion in the application Kind of operation, method, other steps, measures, and schemes in process may also be alternated, changed, rearranged, decomposed, combined or deleted. Further, in the prior art to have and the step in various operations disclosed herein, method, process, measure, scheme It may also be alternated, changed, rearranged, decomposed, combined or deleted.

Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply Ground includes one or more of the features.In the description of the present application, unless otherwise indicated, the meaning of " plurality " is two or It is more than two.

In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be to be connected directly, the connection inside two elements can also be can be indirectly connected through an intermediary.For this field For those of ordinary skill, the concrete meaning of above-mentioned term in this application can be understood with concrete condition.

In the description of this specification, particular features, structures, materials, or characteristics can be real in any one or more Applying can be combined in any suitable manner in example or example.

The above is only some embodiments of the application, it is noted that for the ordinary skill people of the art For member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answered It is considered as the protection scope of the application.

Claims (7)

1. a kind of circuit protective device characterized by comprising rectification module, filter module, switch module, positive direct-current bus With negative DC bus；

The rectification module includes exchange side and DC side；

The anode of the DC side of the second end and the rectification module of the first end of the filter module and the switch module is even It connects, second end is connect with the first end of the switch module and the negative DC bus, and third end and the positive direct-current bus connect It connects；

The cathode of the DC side of the rectification module is connect with the first end of the switch module.

2. circuit protective device according to claim 1, which is characterized in that the filter module includes: series connection Current limiting device and absorption device；

One end of the current limiting device is connect with the anode of the DC side of the second end of the switch module and the rectification module, The other end is connect with described one end for absorbing device and the positive direct-current bus；

The other end for absorbing device is connect with the first end of the switch module and the negative DC bus.

3. circuit protective device according to claim 2, which is characterized in that the current limiting device includes at least one electricity Sense.

4. circuit protective device according to claim 2, which is characterized in that the absorption device includes at least one electricity Hold.

5. circuit protective device according to claim 4, which is characterized in that when the number of the capacitor is two or more When, more than two capacitor serial or parallel connections or in series and parallel connection.

6. circuit protective device according to claim 1, which is characterized in that the switch module includes: thyristor and control Device processed；

The anode of the thyristor connect with the anode of the controller, and the of the positive and filter module of the thyristor The anode connection of the DC side of one end and the rectification module；

The cathode of the thyristor is connect with the cathode of the controller, and the of the cathode of the thyristor and the filter module Two ends are connected with the cathode of the DC side of the rectification module.

7. a kind of rectifier equipment, which is characterized in that anti-including rectification main circuit and circuit as claimed in any one of claims 1 to 6 Protection unit.