CN215097043U

CN215097043U - Suspension controller

Info

Publication number: CN215097043U
Application number: CN202121687017.0U
Authority: CN
Inventors: 耿俊利; 王俊平; 勾玉静; 铁强; 董钟
Original assignee: Beijing Rail Transit Technology And Equipment Group Co ltd
Current assignee: Beijing Rail Transit Technology And Equipment Group Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-12-10
Anticipated expiration: 2031-07-23

Abstract

The utility model provides a suspension controller belongs to electromagnetic control technical field. The utility model relates to a suspension controller, which comprises a power supply unit; the chopper control unit is connected with the magnetic-levitation train control center and used for generating a chopping signal according to a magnetic-levitation train command sent by the magnetic-levitation train control center; and the SIC chopper is respectively connected with the power supply unit, the chopper control unit, the first suspension electromagnet and the second suspension electromagnet and is used for generating suspension current according to the chopping signal so as to control the first suspension electromagnet and the second suspension electromagnet to generate suspension force. The utility model discloses an utilize SIC chopper to replace the IGBT subassembly and can reduce the electric energy loss of suspension controller as power control module.

Description

Suspension controller

Technical Field

The utility model belongs to the technical field of electromagnetic control, more specifically say, relate to a suspension controller.

Background

The suspension system adopts a permanent magnet and electromagnetic mixed suspension mode. The suspension system obtains the suspension state of the electromagnet through the suspension sensor, and obtains the magnitude and the direction of the exciting current of the electromagnet according to the obtained suspension state and the suspension control algorithm so as to achieve the purpose of controlling the electromagnetic force of the suspension electromagnet, thereby ensuring that the gap between the suspension electromagnet and the track is always kept at a set gap value, and further realizing the stable suspension of the magnetic-levitation train.

The suspension system automatically adjusts the magnitude of the suspension force according to the range from the empty train AW0 to the overtaking load AW3 of the train load, so that the suspension gap of the train is kept basically unchanged in the range from the empty train AW0 to the overtaking load AW3, and the suspension gap is controlled quickly, effectively and reliably in response to the change of the load.

The suspension controller is used as an important component in a suspension system of a medium-low speed maglev train and is commonly used for adjusting the magnitude of suspension force. At present, an IGBT is adopted as a power module in a common suspension controller, air cooling is used for heat dissipation, and the defects of high energy consumption, large size and the like exist.

Disclosure of Invention

An object of the utility model is to provide a suspension controller aims at solving the high problem of current suspension controller energy consumption.

In order to achieve the above object, the utility model adopts the following technical scheme: a levitation controller, comprising:

a power supply unit;

the chopper control unit is connected with the magnetic-levitation train control center and used for generating a chopping signal according to a magnetic-levitation train command sent by the magnetic-levitation train control center;

and the SIC chopper is respectively connected with the power supply unit, the chopper control unit, the first suspension electromagnet and the second suspension electromagnet and is used for generating suspension current according to the chopping signal so as to control the first suspension electromagnet and the second suspension electromagnet to generate suspension force.

Preferably, the power supply unit includes:

a DC330V filter;

a contactor having one end connected to an input of the DC330V filter;

one end of the charging resistor is connected with one end of the contactor, and the other end of the charging resistor is connected with the other end of the contactor;

and the other end of the fast fuse is connected with the chopper.

Preferably, the method further comprises the following steps:

a first electrolytic capacitor, one end of the first electrolytic capacitor being connected to the other end of the fast fuse, the other end of the first electrolytic capacitor being connected to the output of the DC330V filter;

one end of the first discharge plate is connected with one end of the first electrolytic capacitor, and the other end of the first discharge plate is connected with the other end of the first electrolytic capacitor.

Preferably, the SIC chopper comprises: a first SIC power device chopper circuit; the first SIC power device chopper circuit comprises:

one end of the first SIC switching tube is connected with the other end of the fast fuse, and the other end of the first SIC switching tube is connected with the first suspension electromagnet;

one end of the second SIC switching tube is connected with the other end of the first SIC switching tube, and the other end of the second SIC switching tube is connected with the output end of the DC330V filter;

one end of the third SIC switching tube is connected with the other end of the fast fuse, and the other end of the third SIC switching tube is connected with the first suspension electromagnet;

and one end of the fourth SIC switching tube is connected with the other end of the third SIC switching tube, and the other end of the fourth SIC switching tube is connected with the output end of the DC330V filter.

Preferably, the SIC chopper further comprises: a chopper circuit of a second SIC power device; the second SIC power device chopper circuit comprises:

one end of the fifth SIC switching tube is connected with the other end of the fast fuse, and the other end of the fifth SIC switching tube is connected with the second suspension electromagnet;

one end of the sixth SIC switching tube is connected with the other end of the fifth SIC switching tube, and the other end of the sixth SIC switching tube is connected with the output end of the DC330V filter;

one end of the seventh SIC switching tube is connected with the other end of the fast fuse, and the other end of the seventh SIC switching tube is connected with the second suspension electromagnet;

and one end of the eighth SIC switching tube is connected with the other end of the seventh SIC switching tube, and the other end of the eighth SIC switching tube is connected with the output end of the DC330V filter.

Preferably, the method further comprises the following steps:

a second electrolytic capacitor, one end of the second electrolytic capacitor being connected to the other end of the fast fuse, the other end of the second electrolytic capacitor being connected to the output terminal of the DC330V filter;

and one end of the second discharge plate is connected with one end of the second electrolytic capacitor, and the other end of the second discharge plate is connected with the other end of the second electrolytic capacitor.

Preferably, the method further comprises the following steps:

one end of the first reactor is connected with the other end of the first SIC switching tube, and the other end of the first reactor is connected with the first suspension electromagnet;

one end of the second reactor is connected with the other end of the third SIC switching tube, and the other end of the second reactor is connected with the first suspension electromagnet;

one end of the third reactor is connected with the other end of the fifth SIC switching tube, and the other end of the third reactor is connected with the second suspension electromagnet;

and one end of the fourth reactor is connected with the other end of the seventh SIC switching tube, and the other end of the fourth reactor is connected with the second suspension electromagnet.

Preferably, the chopper control unit includes:

DC110V surge protectors;

a DC110V filter, an input of the DC110V filter being connected to an output of the DC110V surge protector;

a control power supply having an input connected to an output of the DC110V filter;

and the input end of the control computer is connected with the output end of the control power supply and the control center of the magnetic-levitation train, and the output end of the control computer is connected with the SIC chopper.

Preferably, the method further comprises the following steps:

the power supply unit, the chopper control unit and the SIC chopper are all arranged in the suspension controller box;

the suspension controller radiator is arranged on one side of the suspension controller box body; and the SIC chopper is in contact with the suspension controller radiator.

The utility model provides a pair of suspension controller's beneficial effect lies in: compared with the prior art, the suspension controller of the utility model comprises a power supply unit; the chopper control unit is connected with the magnetic-levitation train control center and used for generating a chopping signal according to a magnetic-levitation train command sent by the magnetic-levitation train control center; and the SIC chopper is respectively connected with the power supply unit, the chopper control unit, the first suspension electromagnet and the second suspension electromagnet and is used for generating suspension current according to the chopping signal so as to control the first suspension electromagnet and the second suspension electromagnet to generate suspension force. The utility model discloses an utilize SIC chopper to replace the IGBT subassembly and can reduce the electric energy loss of suspension controller as power control module.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a circuit diagram of a suspension controller according to an embodiment of the present invention.

Fig. 2 is a control schematic diagram of a suspension controller according to an embodiment of the present invention.

Fig. 3 is a control structure diagram of a suspension controller according to an embodiment of the present invention.

Fig. 4 is a side view of an internal layout of a suspension controller according to an embodiment of the present invention.

Fig. 5 is an internal top view of the suspension controller after the box cover is opened according to an embodiment of the present invention.

Fig. 6 is a layout diagram of components on a heat sink in a suspension controller according to an embodiment of the present invention.

Fig. 7 is a top view of the four-sided frame and the internal partition board of the suspension controller according to the embodiment of the present invention.

Fig. 8 is a schematic view of a four-side frame of a suspension controller according to an embodiment of the present invention.

Fig. 9 is a structural diagram of a suspension controller radiator according to an embodiment of the present invention.

1. A control computer; 2. controlling a power supply; 3. a SIC drive board; 4. a partition plate; 5. a SIC power module; 6. an electrolytic capacitor; 7. an output reactance; 8. a fast fuse 9, a contactor; 10. a DC330V filter; 11. a DC110V filter; 12. DC110V surge protectors; 13. an absorption capacitance; 14. copper bars; 15. a current detection board; 16. a heat sink; 17. an upper plate; 18. a lower plate; 19. a first end plate; 20. a second end plate; 21. a cover plate; 22. a P1 connector; 23. a P2 connector; 24. a P3 connector; 25. a P4 connector.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-2, to achieve the above object, the present invention adopts the following technical solutions: a levitation controller, comprising: the system comprises a power supply unit, a chopper control unit and a SIC chopper; the chopper control unit is connected with the magnetic-levitation train control center and used for generating a chopping signal according to a magnetic-levitation train command sent by the magnetic-levitation train control center; and the SIC chopper is respectively connected with the power supply unit, the chopper control unit, the first suspension electromagnet G1 and the second suspension electromagnet G2 and is used for generating suspension current according to the chopping signals so as to control the first suspension electromagnet G1 and the second suspension electromagnet G2 to generate suspension force.

As another specific embodiment of the present invention, the power supply unit includes: DC330V filter P, contactors, charging resistor R1 and fast-speed fuse R2. One end of the contactor is connected with the input end of the DC330V filter P; one end of the charging resistor R1 is connected with one end of the contactor, and the other end of the charging resistor R1 is connected with the other end of the contactor; one end of a fast fuse R2 and one end of a fast fuse R2 are connected with the other end of the contactor, and the other end of a fast fuse R2 is connected with the chopper.

As another specific embodiment of the present invention, a chopper control unit includes: DC110V surge protectors; the input end of the DC110V filter is connected with the output end of the DC110V surge protector; the input end of the control power supply is connected with the output end of the DC110V filter; and the input end of the control computer is connected with the output end of the control power supply and the control center of the magnetic-levitation train, and the output end of the control computer is connected with the SIC chopper.

The utility model discloses still include first current sensor D1, second current sensor D2, third current sensor D3, fourth current sensor D4 and fifth current sensor D5 and set up the voltage sensor at the fast acting fuse other end for gather electric current and voltage signal, prevent that voltage or electric current from reaching the early warning value in the controller.

As another specific embodiment of the present invention, the present invention further includes: a first electrolytic capacitor C1 and a first discharge plate R3; one end of a first electrolytic capacitor C1, one end of a first electrolytic capacitor C1 is connected with the other end of the fast fuse R2, and the other end of the first electrolytic capacitor C1 is connected with the output end of a DC330V filter P; one end of the first discharge plate R3, one end of the first discharge plate R3 is connected to one end of the first electrolytic capacitor C1, and the other end of the first discharge plate R3 is connected to the other end of the first electrolytic capacitor C1.

As another specific embodiment of the present invention, the SIC chopper includes: a first SIC power device chopper circuit; the first SIC power device chopper circuit comprises a first SIC switching tube Q1, a second SIC switching tube Q2, a third SIC switching tube Q3 and a fourth SIC switching tube Q4; one end of a first SIC switching tube Q1, one end of a first SIC switching tube Q1 is connected with the other end of the fast fuse R2, and the other end of the first SIC switching tube Q1 is connected with a first suspension electromagnet G1; one end of a second SIC switching tube Q2, one end of a second SIC switching tube Q2 is connected with the other end of the first SIC switching tube Q1, and the other end of the second SIC switching tube Q2 is connected with the output end of a DC330V filter P; one end of a third SIC switching tube Q3, one end of a third SIC switching tube Q3 is connected with the other end of the fast fuse R2, and the other end of the third SIC switching tube Q3 is connected with the first suspension electromagnet G1; and one end of a fourth SIC switching tube Q4, one end of a fourth SIC switching tube Q4 is connected with the other end of the third SIC switching tube Q3, and the other end of the fourth SIC switching tube Q4 is connected with the output end of the DC330V filter P.

As another specific embodiment of the present invention, the SIC chopper further includes: a chopper circuit of a second SIC power device; the second SIC power device chopper circuit includes: a fifth SIC switching tube Q5, a sixth SIC switching tube Q6, a seventh SIC switching tube Q7 and an eighth SIC switching tube Q8. One end of a fifth SIC switching tube Q5, one end of a fifth SIC switching tube Q5 is connected with the other end of the fast fuse R2, and the other end of the fifth SIC switching tube Q5 is connected with a second suspension electromagnet G2; one end of a sixth SIC switching tube Q6, one end of a sixth SIC switching tube Q6 is connected with the other end of a fifth SIC switching tube Q5, and the other end of the sixth SIC switching tube Q6 is connected with the output end of a DC330V filter P; one end of a seventh SIC switching tube Q7, one end of a seventh SIC switching tube Q7 is connected with the other end of the fast fuse R2, and the other end of the seventh SIC switching tube Q7 is connected with a second suspension electromagnet G2; and one end of an eighth SIC switching tube Q8, one end of an eighth SIC switching tube Q8 is connected with the other end of a seventh SIC switching tube Q7, and the other end of an eighth SIC switching tube Q8 is connected with the output end of a DC330V filter P.

As another specific embodiment of the present invention, the present invention further includes: a second electrolytic capacitor C2 and a second discharge plate R4. One end of a second electrolytic capacitor C2, one end of a second electrolytic capacitor C2 is connected with the other end of the fast fuse R2, and the other end of the second electrolytic capacitor C2 is connected with the output end of the DC330V filter P; one end of the second discharge plate R4, one end of the second discharge plate R4 is connected to one end of the second electrolytic capacitor C2, and the other end of the second discharge plate R4 is connected to the other end of the second electrolytic capacitor C2.

The utility model discloses in, still include that filtering is used: one end of a first reactor L1, one end of a first reactor L1 is connected with the other end of a first SIC switching tube Q1, and the other end of the first reactor L1 is connected with a first suspension electromagnet G1; one end of a second reactor L2 is connected with the other end of a third SIC switching tube Q3, and the other end of the second reactor L2 is connected with a first suspension electromagnet G1; one end of a third reactor L3, one end of a third reactor L3 is connected with the other end of a fifth SIC switching tube Q5, and the other end of the third reactor L3 is connected with a second suspension electromagnet G2; one end of a fourth reactor L4 and one end of a fourth reactor L4 are connected with the other end of a seventh SIC switching tube Q7, and the other end of the fourth reactor L4 is connected with a second suspension electromagnet G2.

As another specific implementation mode of the present invention, the output end of the control computer of the present invention is connected with the SIC drive plate 1, the SIC drive plate 2, the SIC drive plate 3, and the SIC drive plate 4, respectively. The SIC drive board is connected with the control end of the SIC switching tube, and the SIC switching tube is a controllable switching tube made of silicon carbide material and can be a triode, an IGBT or a field effect tube and the like of the silicon carbide material.

The following explains the principle of the suspension controller of the present invention:

please refer to fig. 2-3. The suspension controller is in double-point control, namely two main circuits are arranged in one suspension controller and respectively control the suspension of two suspension points.

1) A main circuit part: A330V power supply enters the suspension controller from the connector, enters the DC330V filter for filtering, enters the two ends of the electrolytic capacitor through the contactor for voltage stabilization and filtering, and then is subjected to chopping control through an H-bridge chopper circuit formed by SIC power devices to generate exciting current required by the electromagnet, and the exciting current is filtered through the reactor and then is output to a load.

The control circuit part: after entering from the connector, the 110V power supply passes through the DC110V surge protector and the DC110V filter in sequence, and then is subjected to voltage conversion by the control power supply, and then control power is output to the control computer, the 4 SIC drive plates, the voltage sensor and the current sensor for power supply. The control computer processes the control algorithm according to the received signals and the feedback state information, outputs 4 paths of driving signals to the SIC driving module, and the 4 SIC driving modules respectively drive the 4 SIC power modules so that the H-bridge chopper circuit generates the exciting current required by the electromagnet.

The utility model discloses each electron device of well adoption can also classify with suspension controller subsystem form and describe.

TABLE 1 suspension controller subsystem configuration

In practical application, after the DC330V voltage enters the suspension controller, the voltage is transmitted to a chopper circuit through a filter, a contactor, a direct current fuse and an electrolytic capacitor in the suspension controller, chopping is carried out after a command of the floating car is received, then output current is filtered through a reactor, and suspension current is output and enters the suspension electromagnet to generate suspension force, so that the train is suspended.

The utility model discloses a SIC chopper adopts the design of two choppers, and every set of chopper has two tunnel solitary chopper H bridges, and DC330V input is all the way in two tunnel chopper H bridge sharings, independent output respectively.

The utility model provides a suspension controller's technical parameter as follows:

inputting a main voltage: DC330V

The input voltage range DC 260V-360V

Inputting a control voltage: DC110V

Controlling the voltage ripple coefficient: DC 77V-137.5V

Output rated current/power: 20A/1kW

Short-time output maximum current/power: 120A/18kW (10 s duration)

Chopping mode: PWM

The capacitor discharge time is less than 5s through the chopper unit, and the discharge time is less than 30min through the fixed resistor.

Maximum switching frequency of 8KHz

Cooling by air cooling

Power electronic device SIC

The weight is less than or equal to 45 kg.

The utility model discloses combine specific experiment to carry out the consumption test to SIC power module and traditional IGBT power module respectively.

The turn-on and turn-off loss of the transformer is calculated through MATLAB software, and test data are respectively shown in tables 2 and 3.

TABLE 2 CREE Brand SIC Power Module Power loss

TABLE 3 Power loss of conventional IGBT Power Module

According to the experimental data, the loss of the SIC power device is 1/7-1/6 of the loss of the traditional IGBT, and the switching loss of the device is greatly reduced. Therefore, from the perspective of switching loss, both the CREE brand SIC power module and the Rohm brand SIC power module can be adopted, and the loss of the SIC power tube is lower than that of the traditional IGBT after the switching frequency is increased to 8K. Therefore, the utility model discloses well suspension controller has used CREE brand SIC power module as the component part of SIC chopper.

In practical application, the method further comprises the following steps: a floating controller enclosure and a floating controller heat sink. The power supply unit, the chopper control unit and the SIC chopper are all arranged in the suspension controller box body; the suspension controller radiator is arranged on one side of the suspension controller box body; the SIC chopper is contacted with the radiator of the suspension controller. And the fins of the suspension controller radiator are vertical to the ground, the weight of the radiator is about 6.9kg, the height of the fins is 35mm, the thickness of the fins is 2mm, the space between the teeth is 11mm, and the height of the base plate is 10 mm.

Referring to fig. 4-9, the suspension controller according to the present invention will be further described with reference to the following embodiments:

1) the control power supply, the SIC power module, the reactor and the current sensor are sequentially arranged and installed on the suspension controller radiator;

2) the controller is internally provided with a control circuit and a main circuit which are isolated and separated through a partition board;

3) the SIC power module is connected with the anode and the cathode of the electrolytic capacitor through two copper bars;

4) the DC330V filter is arranged on the lower plate of the box body of the suspension controller and filters the input main voltage 330V;

5) the 110V filter and the 110V surge are arranged on the left end plate of the suspension controller in parallel, and the 110V voltage input from the outside is filtered.

The utility model discloses well suspension controller adopts power density big, small, light in weight's SIC power device, it has lower on-resistance, can work at higher temperature, higher power level has, be more suitable for high temperature high frequency work, therefore have lower switching loss and more can reduce electrolytic capacitor's parameter and volume, reduce radiating element's configuration simultaneously, cancel the fan, change into natural air-cooling, reduce the volume of radiator, weight, reduce radiator fan quantity, thereby reduce suspension controller's volume, weight, improve suspension controller's reliability.

The utility model discloses all set up power supply unit, chopper control unit and SIC chopper in suspension controller box, have following advantage:

1) the modular design concept is adopted, so that the whole module can be mounted and dismounted, and the production and maintenance efficiency is improved;

2) the output of the main loop of the suspension controller is composed of two independent main loops, and the two suspension points can be independently controlled;

3) the layout is used for independently arranging the components related to the two main loops in space and outputting the components independently, so that the interference between two paths of output is reduced;

4) the quick-melting and easy-replacing of the easily damaged components are realized, the operation is simple and quick, and the maintenance time of the equipment is greatly prolonged;

5) the space limit of the control unit (control computer, control power supply) and the main loop unit (filter, contactor, electrolytic capacitor, SIC module, output reactance) is more obvious, and the electromagnetic compatibility design is more facilitated when the control unit is used in cooperation with the partition plate.

The utility model discloses a suspension controller, which comprises a power supply unit; the chopper control unit is connected with the magnetic-levitation train control center and used for generating a chopping signal according to a magnetic-levitation train command sent by the magnetic-levitation train control center; and the SIC chopper is respectively connected with the power supply unit, the chopper control unit, the first suspension electromagnet and the second suspension electromagnet and is used for generating suspension current according to the chopping signal so as to control the first suspension electromagnet and the second suspension electromagnet to generate suspension force. The utility model discloses an utilize SIC chopper to replace the IGBT subassembly and can reduce the electric energy loss of suspension controller as power control module.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and the present invention shall be covered by the claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A levitation controller, comprising:

a power supply unit;

2. A levitation controller as recited in claim 1, wherein the power supply unit comprises:

a DC330V filter;

a contactor having one end connected to an input of the DC330V filter;

and the other end of the quick fuse is connected with the SIC chopper.

3. A levitation controller as recited in claim 2, further comprising:

4. The levitation controller of claim 3, wherein the SIC chopper comprises: a first SIC power device chopper circuit; the first SIC power device chopper circuit comprises:

5. The levitation controller of claim 4, wherein the SIC chopper further comprises: a chopper circuit of a second SIC power device; the second SIC power device chopper circuit comprises:

6. The levitation controller of claim 5, further comprising:

7. The levitation controller of claim 6, further comprising:

8. The levitation controller of claim 1, wherein the chopper control unit comprises:

DC110V surge protectors;

9. The levitation controller of any one of claims 1-8, further comprising: