CN216599435U - Control power supply for suspension, guide and brake controller of high-speed maglev train - Google Patents
Control power supply for suspension, guide and brake controller of high-speed maglev train Download PDFInfo
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- CN216599435U CN216599435U CN202123089801.4U CN202123089801U CN216599435U CN 216599435 U CN216599435 U CN 216599435U CN 202123089801 U CN202123089801 U CN 202123089801U CN 216599435 U CN216599435 U CN 216599435U
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Abstract
The utility model relates to a control power supply for a suspension, guide and brake controller of a high-speed maglev train, which comprises: the power supply comprises an EMC filter connected with a DC440V power supply, a pi-type filter connected with the output end of the EMC filter, a DC440V/DC24V double-tube forward power circuit connected with the output end of the pi-type filter, a DC440V/DC24V double-tube forward power circuit connected with the DC440V/DC24V double-tube forward power circuit, a DC24V output circuit, a DC24V/DC5V output circuit, a DC24V/DC15V output circuit and a DC24V/DC +/-15V output circuit, wherein the power supply comprises a power supply, a power supply voltage regulator and a power supply voltage regulator; the front end of the DC440V/DC24V double-tube forward power circuit is provided with a first protection circuit. The utility model can realize 200W power output and can fully meet the power consumption requirements of suspension, guide and brake controllers of the high-speed magnetic suspension vehicle.
Description
Technical Field
The utility model relates to a control power supply, in particular to a control power supply for a suspension, guide and brake controller of a high-speed maglev train.
Background
The magnetic suspension train is divided into a high-speed magnetic suspension train and a medium-low speed magnetic suspension train, the speed per hour of the high-speed magnetic suspension train can reach 400-. When the high-speed magnetic suspension train runs under a rated working condition, the high-speed magnetic suspension train is suspended on a ground track, and the working current of the suspension electromagnet is controlled by the magnetic suspension controller to change the magnitude of the suspension force, so that the train can realize actions such as suspension, guidance, braking and the like. Therefore, the controller is an important control center for the running of the maglev train, and the stable running state of the controller is an important guarantee for the running safety of the maglev train. To achieve stable operation of the controller, a control power supply for supplying power to the controller is more important.
The existing control power supply is easy to cause the tripping of a working power supply of a magnetic suspension vehicle due to the problems of overlarge current of a starting loop and the like at the moment of powering on, even can directly cause the failure of part of devices and influence the stable and safe operation of the vehicle.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a control power supply for a suspension, guide and brake controller of a high-speed maglev train.
In order to achieve the above object of the present invention, the present invention provides a control power supply for a suspension, guidance and braking controller of a high-speed maglev train, comprising: the power supply circuit comprises an EMC filter connected with a DC440V power supply, a pi-type filter connected with the output end of the EMC filter, a DC440V/DC24V double-tube forward power circuit connected with the output end of the pi-type filter, a DC440V/DC24V double-tube forward power circuit connected with the DC440V/DC24V double-tube forward power circuit, a DC24V output circuit, a DC24V/DC5V output circuit, a DC24V/DC15V output circuit and a DC24V/DC +/-15V output circuit;
the front end of the DC440V/DC24V double-tube forward power circuit is provided with a first protection circuit for input overvoltage, undervoltage, overtemperature and overcurrent protection.
According to one aspect of the utility model, the output ends of the DC24V output circuit, the DC24V/DC5V output circuit, the DC24V/DC15V output circuit and the DC24V/DC +/-15V output circuit are respectively provided with a second protection circuit for output overvoltage, overcurrent and short-circuit protection.
According to one aspect of the utility model, a soft start circuit and a bypass circuit are further arranged between the pi-type filter and the DC440V/DC24V double-transistor forward power circuit.
According to an aspect of the utility model, the pi filter comprises: the circuit comprises a first input end P1, a second input end P2, a third input end P3, a common-mode inductor TR1, an X capacitor CX1, an X capacitor CX2, a Y capacitor CY1 and a Y capacitor CY 2;
the first input terminal P1 is connected to a first coil input terminal of the common mode inductor TR 1;
the second input terminal P2 is connected to a second coil input terminal of the common mode inductor TR 1;
two opposite ends of the X capacitor CX1 are respectively connected to the first input terminal P1 and the second input terminal P2;
two opposite ends of the X capacitor CX2 are respectively connected with the first coil output end of the common-mode inductor TR1 and the second coil output end of the common-mode inductor TR 1;
the Y capacitor CY1 and the Y capacitor CY2 are connected in series, one end of the Y capacitor CY1 is connected to the first coil output end, and one end of the Y capacitor CY2 is connected to the second coil output end;
the position where the Y capacitor CY1 and the Y capacitor CY2 are connected is grounded.
According to an aspect of the utility model, the pi filter further comprises: a voltage dependent resistor MOV1, a voltage dependent resistor MOV2, a voltage dependent resistor MOV3, a gas discharge tube FD 1;
the piezoresistor MOV1 and the piezoresistor MOV2 are connected in series, one end of the piezoresistor MOV1 is connected with the first input end P1, and one end of the piezoresistor MOV2 is connected with the second input end P2;
two opposite ends of the piezoresistor MOV3 are respectively connected with the first input end P1 and the second input end P2
The gas discharge tube FD1 has one end connected to the third input terminal P3 and the other end connected to the series connection of the varistor MOV1 and the varistor MOV 2.
According to an aspect of the utility model, the pi filter further comprises: the safety discharge resistor R1, the safety discharge resistor R2, the safety discharge resistor R3 and the safety discharge resistor R4;
the safety regulation discharge resistor R1, the safety regulation discharge resistor R2, the safety regulation discharge resistor R3 and the safety regulation discharge resistor R4 are sequentially connected in series, one end of the safety regulation discharge resistor R1 is connected with the first coil output end of the common-mode inductor TR1, and one end of the safety regulation discharge resistor R4 is connected with the second coil output end of the common-mode inductor TR 1.
According to one aspect of the utility model, the DC440V/DC24V two-transistor forward power circuit comprises: a transformer T1, an input side circuit and an output side circuit;
the transformer T1 includes: a primary winding and a secondary winding;
the input side circuit is connected with the primary side winding, and the output side circuit is connected with the secondary side winding;
the input side circuit includes: a capacitor C1, a diode D1, a diode D2, a diode D5, a diode D6, a field effect transistor Q1 and a field effect transistor Q2;
the diode D5, the capacitor C1 and the diode D6 are sequentially connected in series, wherein the cathode of the diode D5 is connected with one end of the capacitor C1, and the anode of the diode D5 is connected with the first primary side end of the primary side winding; the anode of the diode D6 is connected with the other end of the capacitor C1, and the cathode of the diode D6 is connected with the second primary side end of the primary winding;
the drain electrode of the field effect transistor Q1 is connected with the cathode electrode of the diode D5, and the source electrode of the field effect transistor Q1 is connected with the anode electrode of the diode D5;
the drain electrode of the field effect transistor Q2 is connected with the cathode electrode of the diode D6, and the source electrode of the field effect transistor Q2 is connected with the anode electrode of the diode D6;
the cathode of the diode D1 is connected with one end of the capacitor C1, and the connection position is between the drain of the field effect transistor Q1 and the position where the capacitor C1 is connected;
the anode of the diode D1 is connected with the second primary side end of the primary side winding, and the connection position is between the drain of the field-effect transistor Q2 and the second primary side end;
the anode of the diode D2 is connected with the other end of the capacitor C1, and the connection position is between the source of the field effect transistor Q2 and the position where the capacitor C1 is connected;
the cathode of the diode D2 is connected to the first primary side of the primary winding at a location between the source of the fet Q1 and the first primary side.
According to an aspect of the present invention, the output side circuit includes: diode D3, diode D4, inductor L1, and capacitor C2;
the diode D3, the inductance coil L1 and the capacitor C2 are sequentially arranged in series; the anode of the diode D3 is connected with the first secondary end of the secondary winding, the cathode thereof is connected with one end of the inductance coil L1, and one end of the capacitor C2 is connected with the second secondary end of the secondary winding;
the cathode of the diode D4 is connected with the inductance coil L1, and the connection position is between the anode of the diode D3 and the position where the first secondary end is connected;
the anode of the diode D4 is connected with the second secondary side end of the secondary winding, and the connection position is between the capacitor C2 and the position where the second secondary side end is connected.
According to an aspect of the utility model, further comprising: a PCB board;
the EMC filter, the pi-type filter, the DC440V/DC24V double-tube forward power circuit, the first protection circuit, the DC24V output circuit, the DC24V/DC5V output circuit, the DC24V/DC15V output circuit and the DC24V/DC +/-15V output circuit are all arranged on the PCB;
the PCB board is the multiply wood, just be provided with the heat conduction hole between the layer of PCB board.
According to an aspect of the utility model, further comprising: a housing;
and the bottom plate of the shell is provided with radiating fins.
According to a scheme of the utility model, the control power supply can realize 200W power output, and can fully meet the power consumption requirements of suspension, guide and brake controllers of a high-speed maglev train. Moreover, the control power supply has the performances of high stability and high precision, and is beneficial to ensuring the use stability and the service life of the controller.
According to one scheme of the utility model, the input-to-output and input-to-ground voltage resistance of the control power supply is more than DC2500V, and the output-to-ground and different output-to-output voltage resistance of each group is more than DC500V, so that the control power supply has high reliability and safety.
According to one scheme of the utility model, the control power supply has perfect protection function and has the protection functions of input overvoltage and overcurrent, input undervoltage protection, output overvoltage and overcurrent short circuit, overheating and the like; the system has perfect electromagnetic compatibility design, is provided with an EMC filter and is convenient to install and maintain.
According to one scheme of the utility model, the control power supply forms a filter circuit through the first-stage EMC filter and the first-stage pi-type filter, so that interference signals generated by the control power supply in a high-frequency working state can be effectively eliminated, the influence of the interference signals on various devices or electronic devices after being conducted and radiated can be effectively avoided, and the operation stability and the operation precision of the control power supply are ensured.
According to one scheme of the utility model, the control power supply effectively ensures the input and working stability of the DC440V/DC24V double-tube forward power circuit by arranging the first protection circuit at the front end of the DC440V/DC24V double-tube forward power circuit, and greatly ensures the working stability of subsequent circuits and the high precision of output voltage and current.
According to one scheme of the utility model, a surge or lightning stroke protection circuit is formed by a piezoresistor and a ceramic gas discharge tube, the piezoresistor is connected to an input positive bus and a negative bus, the piezoresistor is connected to the positive end and the negative end respectively, and then the positive bus and the negative bus are grounded through the gas discharge tube, and the piezoresistor is used for absorbing lightning stroke or tested pulse voltage to protect a circuit behind the piezoresistor. In addition, the gas discharge tube is added, so that the use is not influenced by short circuit when the piezoresistor works frequently to cause fatigue failure.
Drawings
FIG. 1 is a block diagram schematically illustrating the construction of a control power supply according to an embodiment of the present invention;
FIG. 2 is a circuit diagram schematically representing pi filtering according to an embodiment of the present invention;
fig. 3 is a circuit diagram schematically representing a DC440/DC24V power circuit, according to an embodiment of the utility model.
Detailed Description
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 embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.
The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.
As shown in fig. 1, according to an embodiment of the present invention, a control power supply for a levitation, guidance and braking controller of a high-speed magnetic-levitation train according to the present invention comprises: the power supply circuit comprises an EMC filter used for being connected with a DC440V power supply, a pi-type filter connected with the output end of the EMC filter, a DC440V/DC24V double-tube forward power circuit connected with the output end of the pi-type filter, a DC440V/DC24V double-tube forward power circuit connected with the DC440V/DC24V double-tube forward power circuit and outputting 24V 3.5A, a DC24V output circuit outputting 5V 6A, a DC24V/DC5V output circuit outputting 5V 6A, a DC24V/DC15V output circuit outputting 15V 2A and a DC24V/DC +/-15V output circuit outputting +/-15V 1A. In the present embodiment, a first protection circuit for input overvoltage, undervoltage, overtemperature and overcurrent protection is arranged at the front end of the DC440V/DC24V two-transistor forward power circuit.
In the embodiment, an EMC filter, a pi-type filter, a DC440V/DC24V two-transistor forward power circuit, a first protection circuit, a DC24V output circuit, a DC24V/DC5V output circuit, a DC24V/DC15V output circuit, and a DC24V/DC ± 15V output circuit are all disposed on a PCB board. In the embodiment, the PCB is provided with the multilayer boards, heating devices in the circuit are separately arranged, and the heat conducting holes are formed among layers of the PCB and used for heat conduction among different layers, so that the heat inside the PCB can be effectively dissipated to the outside, and the stable operation of the PCB is effectively ensured.
Through the arrangement, the control power supply forms the filter circuit through the first-stage EMC filter and the first-stage pi-type filter, so that interference signals generated by the control power supply in a high-frequency working state can be effectively eliminated, the influence of the interference signals on various devices or electronic devices after conduction and radiation can be effectively avoided, and the operation stability and the operation precision of the control power supply are ensured.
Through the arrangement, the control power supply effectively ensures the input and working stability of the DC440V/DC24V double-tube forward power circuit by arranging the first protection circuit at the front end of the DC440V/DC24V double-tube forward power circuit, and greatly ensures the working stability of subsequent circuits and the high precision of output voltage and current.
As shown in fig. 1, according to an embodiment of the present invention, the output terminals of the DC24V output circuit, the DC24V/DC5V output circuit, the DC24V/DC15V output circuit, and the DC24V/DC ± 15V output circuit are respectively provided with a second protection circuit for output overvoltage, overcurrent, and short circuit protection.
Through the arrangement, the output precision and the output stability of the utility model are further ensured through the second protection circuit, and the working stability and the safety of the subsequently connected electric appliance are also effectively protected.
According to one embodiment of the utility model, a soft start circuit and a bypass circuit are further arranged between the pi-type filter and the DC440V/DC24V double-transistor forward power circuit. In the embodiment, the starting impact current during starting is effectively inhibited by using the soft start circuit and the low-resistance bypass circuit as the starting circuit of the control power supply, so that the service life and the use stability of the utility model are effectively ensured. Meanwhile, under the protection effect of the first protection circuit, the service life and the working stability of the utility model are more favorably ensured.
As shown in fig. 2, according to an embodiment of the present invention, the pi filter includes: the circuit comprises a first input end P1, a second input end P2, a third input end P3, a common-mode inductor TR1, an X capacitor CX1, an X capacitor CX2, a Y capacitor CY1 and a Y capacitor CY 2. In the present embodiment, the first input terminal P1 is connected to the first coil input terminal of the common mode inductor TR 1; the second input terminal P2 is connected to the second coil input terminal of the common mode inductor TR 1; two opposite ends of the X capacitor CX1 are respectively connected to the first input terminal P1 and the second input terminal P2; two opposite ends of the X capacitor CX2 are respectively connected with a first coil output end of the common-mode inductor TR1 and a second coil output end of the common-mode inductor TR 1; y electric capacity CY1 and Y electric capacity CY2 set up in series, and Y electric capacity CY 1's one end is connected with first coil output end, and Y electric capacity CY 2's one end second coil output end is connected. In this embodiment, the Y capacitor CY1 and the Y capacitor CY2 are connected to ground.
As shown in fig. 2, according to an embodiment of the present invention, the pi filter further includes: a voltage dependent resistor MOV1, a voltage dependent resistor MOV2, a voltage dependent resistor MOV3, a gas discharge tube FD 1. In this embodiment, the varistor MOV1 and the varistor MOV2 are connected in series, and one end of the varistor MOV1 is connected to the first input terminal P1, and one end of the varistor MOV2 is connected to the second input terminal P2; two opposite ends of the voltage dependent resistor MOV3 are respectively connected with a first input end P1 and a second input end P2; the gas discharge tube FD1 has one end connected to the third input terminal P3 and the other end connected to the series connection of the varistor MOV1 and the varistor MOV 2.
As shown in fig. 2, according to an embodiment of the present invention, the pi filter further includes: the safety discharge resistor R1, the safety discharge resistor R2, the safety discharge resistor R3 and the safety discharge resistor R4; in this embodiment, the safety discharge resistor R1, the safety discharge resistor R2, the safety discharge resistor R3, and the safety discharge resistor R4 are sequentially connected in series, one end of the safety discharge resistor R1 is connected to the first coil output end of the common mode inductor TR1, and one end of the safety discharge resistor R4 is connected to the second coil output end of the common mode inductor TR 1.
With the above arrangement, in the pi-type filter, the X capacitor CX1 and the X capacitor CX2 are arranged for filtering differential mode interference, the Y capacitor CY1 and the Y capacitor CY2 are arranged for filtering common mode interference, and the common mode inductor TR1 is used for suppressing common mode signals.
By the arrangement, the voltage dependent resistors MOV1, MOV2 and MOV3 are arranged in the pi-type filter to absorb the surge voltage of lightning stroke, so that the use safety and stability of a following circuit are effectively protected. In addition, the gas discharge tube FD1 can ensure that the failure of the piezoresistor does not cause the short-circuit failure of the whole circuit to affect the use when the piezoresistor works frequently to cause fatigue failure.
Through the arrangement, the voltage of the X capacitor can be reduced to be lower than a safe voltage value within rated time by arranging the safety discharge resistors R1, R2, R3 and R4 in the pi-type filter, and the use safety and the service life of the utility model are ensured.
As shown in fig. 3, according to an embodiment of the present invention, the DC440V/DC24V dual-transistor forward power circuit includes: transformer T1, an input side circuit and an output side circuit. In the present embodiment, the transformer T1 includes: a primary winding and a secondary winding. The input side circuit is connected with the primary side winding, and the output side circuit is connected with the secondary side winding; when the control power supply works normally, the power supply voltage is applied to an input side circuit of the primary winding and is transmitted to subsequent electrical appliances through an output side circuit of the secondary winding.
In the present embodiment, the input side circuit includes: capacitor C1, diode D1, diode D2, diode D5, diode D6, field effect transistor Q1 and field effect transistor Q2. In this embodiment, the diode D5, the capacitor C1, and the diode D6 are sequentially connected in series, wherein the cathode of the diode D5 is connected to one end of the capacitor C1, and the anode thereof is connected to the first primary end of the primary winding; the anode of the diode D6 is connected with the other end of the capacitor C1, and the cathode of the diode D6 is connected with the second primary side end of the primary side winding;
in this embodiment, the drain of the field effect transistor Q1 is connected to the cathode of the diode D5, and the source thereof is connected to the anode of the diode D5; the drain electrode of the field effect transistor Q2 is connected with the cathode electrode of the diode D6, and the source electrode of the field effect transistor Q2 is connected with the anode electrode of the diode D6;
in this embodiment, the cathode of the diode D1 is connected to one end of the capacitor C1 at a position between the drain of the fet Q1 and the position at which the capacitor C1 is connected; the anode of the diode D1 is connected with the second primary side end of the primary side winding, and the connection position is between the drain of the field-effect tube Q2 and the second primary side end;
in this embodiment, the anode of the diode D2 is connected to the other end of the capacitor C1 at a position between the source of the fet Q2 and the position at which the capacitor C1 is connected; the cathode of the diode D2 is connected to the first primary side of the primary winding at a location between the source of the fet Q1 and the first primary side.
As shown in fig. 3, according to an embodiment of the present invention, an output side circuit includes: diode D3, diode D4, inductor L1, and capacitor C2. In the present embodiment, the diode D3, the inductor L1, and the capacitor C2 are sequentially provided in series; the anode of the diode D3 is connected with the first secondary side end of the secondary winding, the cathode of the diode D3 is connected with one end of the inductance coil L1, and one end of the capacitor C2 is connected with the second secondary side end of the secondary winding; in the present embodiment, the cathode of the diode D4 is connected to the inductor L1 at a position between the anode of the diode D3 and the position where the first secondary end is connected; the anode of diode D4 is connected to the second secondary winding at a location between the capacitor C2 and the location at which the second secondary winding is connected.
In the present embodiment, the inductor L1 and the capacitor C2 constitute an output filter circuit.
With the above arrangement, in a steady state of the control power supply of the present invention during normal operation, the DC440V/DC24V dual-transistor forward power circuit forms a freewheeling circuit for the load because current is already established in the inductor L1 during the previous cycle and is conducted through the diode D4. When a new cycle begins, the primary winding is turned on with an induced electromotive force, and the secondary winding, diode D3, quickly builds up current. Further, since the current flowing through inductor L1 remains constant at the instant of conduction, the current of diode D3 builds up rapidly, and the current of diode D4 decreases equally rapidly. Diode D4 turns off when the forward current in diode D3 increases to the value of the current that originally flowed through diode D4. And the input terminal voltage of inductor L1 will increase to the secondary winding coil voltage, at the same time starting the primary and secondary energy transfer. In this embodiment, the primary coil is designed to have a conduction duty cycle of less than 48% to prevent residual magnetism accumulation.
According to an embodiment of the present invention, the control power supply of the present invention further includes: a housing. In the present embodiment, the bottom plate of the case is provided with heat radiating fins. In this embodiment, the PCB may be fixed to the base plate through the connecting member, thereby achieving rapid heat transfer and ensuring heat dissipation efficiency of the PCB.
According to one embodiment of the utility model, the control power supply can conduct heat on the PCB to dissipate heat on the shell in the modes of glue filling, heat conduction silicone grease coating, electromagnetic element structural member fixing, radiator increasing and the like during production and processing, so that the control power supply is ensured to have good heat dissipation performance, and the service life of the control power supply is prolonged.
The foregoing is merely exemplary of particular aspects of the present invention and devices and structures not specifically described herein are understood to be those of ordinary skill in the art and are intended to be implemented in such conventional ways.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A control power supply that is used for suspension, direction, braking controller of high-speed maglev train, its characterized in that includes: the power supply circuit comprises an EMC filter connected with a DC440V power supply, a pi-type filter connected with the output end of the EMC filter, a DC440V/DC24V double-tube forward power circuit connected with the output end of the pi-type filter, a DC440V/DC24V double-tube forward power circuit connected with the DC440V/DC24V double-tube forward power circuit, a DC24V output circuit, a DC24V/DC5V output circuit, a DC24V/DC15V output circuit and a DC24V/DC +/-15V output circuit;
the front end of the DC440V/DC24V double-tube forward power circuit is provided with a first protection circuit for input overvoltage, undervoltage, overtemperature and overcurrent protection.
2. The control power supply according to claim 1, wherein the output ends of the DC24V output circuit, the DC24V/DC5V output circuit, the DC24V/DC15V output circuit and the DC24V/DC ± 15V output circuit are respectively provided with a second protection circuit for output overvoltage, overcurrent and short-circuit protection.
3. The control power supply of claim 2, wherein a soft start circuit and a bypass circuit are further arranged between the pi-type filter and the DC440V/DC24V double-transistor forward power circuit.
4. The control power supply of claim 3, wherein the pi filter comprises: the circuit comprises a first input end P1, a second input end P2, a third input end P3, a common-mode inductor TR1, an X capacitor CX1, an X capacitor CX2, a Y capacitor CY1 and a Y capacitor CY 2;
the first input terminal P1 is connected to a first coil input terminal of the common mode inductor TR 1;
the second input terminal P2 is connected to a second coil input terminal of the common mode inductor TR 1;
two opposite ends of the X capacitor CX1 are respectively connected to the first input terminal P1 and the second input terminal P2;
two opposite ends of the X capacitor CX2 are respectively connected with the first coil output end of the common-mode inductor TR1 and the second coil output end of the common-mode inductor TR 1;
the Y capacitor CY1 and the Y capacitor CY2 are connected in series, one end of the Y capacitor CY1 is connected to the first coil output end, and one end of the Y capacitor CY2 is connected to the second coil output end;
the position where the Y capacitor CY1 and the Y capacitor CY2 are connected is grounded.
5. The control power supply of claim 4, wherein the pi filter further comprises: a voltage dependent resistor MOV1, a voltage dependent resistor MOV2, a voltage dependent resistor MOV3, a gas discharge tube FD 1;
the piezoresistor MOV1 and the piezoresistor MOV2 are connected in series, one end of the piezoresistor MOV1 is connected with the first input end P1, and one end of the piezoresistor MOV2 is connected with the second input end P2;
two opposite ends of the piezoresistor MOV3 are respectively connected with the first input end P1 and the second input end P2
The gas discharge tube FD1 has one end connected to the third input terminal P3 and the other end connected to the series connection of the varistor MOV1 and the varistor MOV 2.
6. The control power supply of claim 5, wherein the pi filter further comprises: a safety discharge resistor R1, a safety discharge resistor R2, a safety discharge resistor R3 and a safety discharge resistor R4;
the safety regulation discharge resistor R1, the safety regulation discharge resistor R2, the safety regulation discharge resistor R3 and the safety regulation discharge resistor R4 are sequentially connected in series, one end of the safety regulation discharge resistor R1 is connected with the first coil output end of the common-mode inductor TR1, and one end of the safety regulation discharge resistor R4 is connected with the second coil output end of the common-mode inductor TR 1.
7. The control power supply of claim 6, wherein the DC440V/DC24V two-transistor forward power circuit comprises: a transformer T1, an input side circuit and an output side circuit;
the transformer T1 includes: a primary winding and a secondary winding;
the input side circuit is connected with the primary side winding, and the output side circuit is connected with the secondary side winding;
the input side circuit includes: a capacitor C1, a diode D1, a diode D2, a diode D5, a diode D6, a field effect transistor Q1 and a field effect transistor Q2;
the diode D5, the capacitor C1 and the diode D6 are sequentially connected in series, wherein a cathode of the diode D5 is connected to one end of the capacitor C1, and an anode of the diode D5 is connected to a first primary end of the primary winding; the anode of the diode D6 is connected with the other end of the capacitor C1, and the cathode of the diode D6 is connected with the second primary side end of the primary winding;
the drain electrode of the field effect transistor Q1 is connected with the cathode electrode of the diode D5, and the source electrode of the field effect transistor Q1 is connected with the anode electrode of the diode D5;
the drain electrode of the field effect transistor Q2 is connected with the cathode electrode of the diode D6, and the source electrode of the field effect transistor Q2 is connected with the anode electrode of the diode D6;
the cathode of the diode D1 is connected with one end of the capacitor C1, and the connection position is between the drain of the field effect transistor Q1 and the position where the capacitor C1 is connected;
the anode of the diode D1 is connected with the second primary side end of the primary side winding, and the connection position is between the drain of the field-effect transistor Q2 and the second primary side end;
the anode of the diode D2 is connected with the other end of the capacitor C1, and the connection position is between the source of the field effect transistor Q2 and the position where the capacitor C1 is connected;
the cathode of the diode D2 is connected to the first primary side of the primary winding at a location between the source of the fet Q1 and the first primary side.
8. The control power supply according to claim 7, wherein the output side circuit comprises: diode D3, diode D4, inductor L1, and capacitor C2;
the diode D3, the inductance coil L1 and the capacitor C2 are sequentially arranged in series; the anode of the diode D3 is connected with the first secondary end of the secondary winding, the cathode thereof is connected with one end of the inductance coil L1, and one end of the capacitor C2 is connected with the second secondary end of the secondary winding;
the cathode of the diode D4 is connected with the inductance coil L1, and the connection position is between the anode of the diode D3 and the position where the first secondary end is connected;
the anode of the diode D4 is connected with the second secondary side end of the secondary winding, and the connection position is between the capacitor C2 and the position where the second secondary side end is connected.
9. The control power supply according to any one of claims 1 to 8, further comprising: a PCB board;
the EMC filter, the pi-type filter, the DC440V/DC24V double-tube forward power circuit, the first protection circuit, the DC24V output circuit, the DC24V/DC5V output circuit, the DC24V/DC15V output circuit and the DC24V/DC +/-15V output circuit are all arranged on the PCB;
the PCB board is the multiply wood, just be provided with the heat conduction hole between the layer of PCB board.
10. The control power supply of claim 9, further comprising: a housing;
and the bottom plate of the shell is provided with radiating fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123089801.4U CN216599435U (en) | 2021-12-09 | 2021-12-09 | Control power supply for suspension, guide and brake controller of high-speed maglev train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123089801.4U CN216599435U (en) | 2021-12-09 | 2021-12-09 | Control power supply for suspension, guide and brake controller of high-speed maglev train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216599435U true CN216599435U (en) | 2022-05-24 |
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ID=81611017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123089801.4U Active CN216599435U (en) | 2021-12-09 | 2021-12-09 | Control power supply for suspension, guide and brake controller of high-speed maglev train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216599435U (en) |
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2021
- 2021-12-09 CN CN202123089801.4U patent/CN216599435U/en active Active
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