CN206442313U - EMUs auxiliary power supply system main circuit - Google Patents
EMUs auxiliary power supply system main circuit Download PDFInfo
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- CN206442313U CN206442313U CN201621252969.9U CN201621252969U CN206442313U CN 206442313 U CN206442313 U CN 206442313U CN 201621252969 U CN201621252969 U CN 201621252969U CN 206442313 U CN206442313 U CN 206442313U
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Abstract
The utility model provides a kind of EMUs auxiliary power supply system main circuit, belongs to EMUs auxiliary power supply technical field.The EMUs auxiliary power supply system main circuit includes：Pre-charge circuit, full-bridge intermediate frequency isolation circuit and inverter circuit, wherein, the first end of full-bridge intermediate frequency isolation circuit is connected with pre-charge circuit, and the second end of full-bridge intermediate frequency isolation circuit and the first end of inverter circuit are connected；Pre-charge circuit is used for the DC voltage that first threshold is inputted to full-bridge intermediate frequency isolation circuit；Full-bridge intermediate frequency isolation circuit is used to that the DC voltage of Second Threshold will to be obtained by inversion, boosting, rectification and filtering to the DC voltage of the first threshold of input, and the DC voltage of Second Threshold is inputted to inverter circuit；Inverter circuit is used to the DC voltage of the Second Threshold of input passing through inversion, obtains the alternating voltage of the 3rd threshold value.The EMUs auxiliary power supply system main circuit that the utility model is provided, improves the reliability of main circuit.
Description
Technical field
The utility model is related to EMUs auxiliary power supply technical field, more particularly to a kind of EMUs auxiliary power supply system master
Circuit.
Background technology
Auxiliary power supply system is one of important composition part of EMUs, in order to ensure the normal operation of EMUs, train
It is that each auxiliary equipment (such as air-conditioning, cooling pump, micro-wave oven and coffee pot equipment) is carried to need stabilization, efficient auxiliary power supply system
Power supply source.
It is directly that 110V is straight particular by main circuit generally using DC-AC control mode in the technology of existing product
Flow power supply and pass through inverter inversion, so that 230V alternating currents are obtained, with power supply needed for being provided for each auxiliary equipment.But, for
For the auxiliary equipment such as micro-wave oven or coffee pot, it belongs to capacitive load, and thereon, the moment of electricity can produce larger spike electricity
Stream, but because main circuit only has inversion link, it is thus impossible to effectively be suppressed to primary current peak value so that the main circuit
Reliability it is poor.
However, in the prior art, using DC-AC control mode so that the reliability of main circuit is not high.
Utility model content
The utility model provides a kind of EMUs auxiliary power supply system main circuit, to improve the reliability of main circuit.
The utility model embodiment provides a kind of EMUs auxiliary power supply system main circuit, including：
Pre-charge circuit, full-bridge intermediate frequency isolation circuit and inverter circuit, wherein, the first of the full-bridge intermediate frequency isolation circuit
End is connected with the pre-charge circuit, and the second end of the full-bridge intermediate frequency isolation circuit connects with the first end of the inverter circuit
Connect；The pre-charge circuit is used for the DC voltage that first threshold is inputted to the full-bridge intermediate frequency isolation circuit；In the full-bridge
Frequency isolation circuit is used to that the second threshold will to be obtained by inversion, boosting, rectification and filtering to the DC voltage of the first threshold of input
The DC voltage of value, and the DC voltage of the Second Threshold is inputted to the inverter circuit；The inverter circuit is used for will
The DC voltage of the Second Threshold of input passes through inversion, obtains the alternating voltage of the 3rd threshold value.
In the embodiment of the utility model one, the EMUs auxiliary power supply system main circuit also includes：
Wave filter, the wave filter is connected with the second end of the inverter circuit, for export the inverter circuit
The alternating voltage of 3rd threshold value is transformed to the predetermined waveform alternating voltage of the 3rd threshold value.
In the embodiment of the utility model one, the full-bridge intermediate frequency isolation circuit includes insulated gate bipolar transistor IGBT
Module, intermediate-frequency transformer and diode panel, the first end of the IGBT module are connected with the second end of the pre-charge circuit, institute
State the second end of IGBT module to be connected with the first end of the intermediate-frequency transformer and the second end, the 3rd end of the intermediate-frequency transformer
It is connected with the first end of the diode panel, the second end of the diode panel is connected with the inverter circuit, the IGBT moulds
Block is used for the alternating voltage that the DC voltage of the first predetermined threshold value of input is reverse into the 4th threshold value, and the intermediate-frequency transformer is used
Handled in by the alternating voltage of the 4th threshold value by boosting, obtain the alternating voltage of the 5th threshold value, the diode panel is used
In the alternating voltage of the 5th threshold value through over commutation and filtering process, to obtain to the DC voltage of the Second Threshold, and will
The DC voltage of the Second Threshold is inputted to the inverter circuit.
In the embodiment of the utility model one, the IGBT module includes the first pipe group and the second pipe group, first pipe
The first end of group is connected with the second end of the pre-charge circuit, and the of the second end of the first pipe group and the second pipe group
One end is connected, and the 3rd end of the first pipe group is connected with the first end of the intermediate-frequency transformer, and the second of the second pipe group
End is connected with the second end of the intermediate-frequency transformer.
In the embodiment of the utility model one, the diode panel includes commutation diode group, the first filter inductance, two poles
Pipe absorbing circuit and Support Capacitor group, the first end of the commutation diode group are connected with the intermediate-frequency transformer, the rectification
Second end of diode group connects with the first end of first filter inductance and the first end of the diode absorption circuit respectively
Connect, the first end connection of Support Capacitor group described in the second end of the commutation diode group, the second of first filter inductance
End is connected with the second end of the Support Capacitor group.
In the embodiment of the utility model one, the commutation diode group includes four commutation diodes, the first rectification two
The first end of pole pipe is connected with the first end of the 3rd commutation diode, the second end and the second rectification of first commutation diode
The first end connection of diode, the second end of second commutation diode is connected with the first end of the 4th commutation diode, institute
The 3rd end for stating the second commutation diode is connected with first filter inductance and the diode absorption circuit respectively, and described
Second end of three commutation diodes is connected with second end of the 4th commutation diode, the 3rd end of the 4th commutation diode
It is connected with the diode absorption circuit and the Support Capacitor group；
The diode absorption circuit includes the 5th commutation diode, the first electric capacity and the second electric capacity, the 5th rectification
The first end of diode is connected with the commutation diode group, and the second end of the 5th commutation diode is respectively with described first
Second end of the first end of electric capacity and the connection of the first end of the second electric capacity, the second end of first electric capacity and second electric capacity
It is connected with the commutation diode group and the Support Capacitor group；
The Support Capacitor group includes the first Support Capacitor, the second Support Capacitor, the 3rd Support Capacitor and the 4th support electricity
Hold, the first end of first Support Capacitor, the first end of second Support Capacitor, the first end of the 3rd Support Capacitor
And the first end of the 4th Support Capacitor is connected with first filter inductance, the second end of first Support Capacitor,
Second end of second Support Capacitor, the second end of the 3rd Support Capacitor and the second end of the 4th Support Capacitor are equal
It is connected with the diode absorption circuit.
In the embodiment of the utility model one, the pre-charge circuit includes：Contactor, resistance, IGCT, Support Capacitor
And thyristor driver plate, the first end of contactor first end respectively with the resistance, the first end of the IGCT and
The first end connection of the thyristor driver plate, the second end connection of thyristor driver plate described in the second end of the resistance, institute
The second end for stating IGCT is connected with the three-terminal link of the thyristor driver plate and the first end of the Support Capacitor, described
Second end of Support Capacitor is connected with the 4th end of the thyristor driver plate.
In the embodiment of the utility model one, the inverter circuit includes：Inverter power plate and inversion control plate, it is described inverse
The first end of Variable power plate is connected with the second end of the full-bridge intermediate frequency isolation circuit, the second end of the inverter power plate and institute
State the first end connection of inversion control plate.
In the embodiment of the utility model one, the wave filter includes the second filter inductance, the first filter capacitor and second
Filter capacitor, the first end of second filter inductance is connected with the inverter circuit, the second end of second filter inductance
It is connected with the first end of first filter capacitor and second filter capacitor, first filter capacitor and second filter
Second end of ripple electric capacity is connected with the inverter circuit.
The EMUs auxiliary power supply system main circuit that the utility model embodiment is provided, including in pre-charge circuit, full-bridge
Frequency isolation circuit and inverter circuit, wherein, the first end of full-bridge intermediate frequency isolation circuit is connected with pre-charge circuit, full-bridge intermediate frequency every
Connected from the second end of circuit and the first end of inverter circuit.As can be seen here, the EMUs that the utility model embodiment is provided are auxiliary
Electric power system main circuit is helped, by setting full-bridge intermediate frequency isolation circuit between pre-charge circuit and inverter circuit so that pre-
The DC voltage of the first threshold inputted in charging circuit passes through before inverter circuit, can be with by the full-bridge intermediate frequency isolation circuit
Inversion, boosting, rectification and filtering process first are passed through to the DC voltage of the first threshold, so as to obtain the higher direct current of magnitude of voltage
Voltage, while can suppress by peak value comparison method mode to primary current peak value, reduces the magnetic bias of transformer, improves
The reliability and efficiency of main circuit.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art does one and simply introduced, it should be apparent that, drawings in the following description are
Some embodiments of the present utility model, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of structural representation for EMUs auxiliary power supply system main circuit that Fig. 1 provides for the utility model embodiment；
The structural representation for another EMUs auxiliary power supply system main circuit that Fig. 2 provides for the utility model embodiment
Figure；
A kind of structural representation for pre-charge circuit that Fig. 3 provides for the utility model embodiment；
A kind of structural representation for full-bridge intermediate frequency isolation circuit that Fig. 4 provides for the utility model embodiment；
A kind of structural representation for inverter circuit that Fig. 5 provides for the utility model embodiment；
A kind of structural representation for wave filter 104 that Fig. 6 provides for the utility model embodiment.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Term " first ", " second ", " the 3rd " in specification and claims of the present utility model and above-mentioned accompanying drawing,
(if present)s such as " the 4 " is for distinguishing similar object, without for describing specific order or precedence.Should
The data that the understanding is so used can be exchanged in the appropriate case, so as to embodiment of the present utility model described herein, example
If being implemented with the order in addition to those for illustrating or describing herein.In addition, term " comprising " and " having " and
Their any deformation, it is intended that covering is non-exclusive to be included, for example, containing process, the side of series of steps or unit
Method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly
Or for the intrinsic other steps of these processes, method, product or equipment or unit.
In existing product technology, using DC-AC control mode, in actual use for micro-wave oven or coffee pot
For auxiliary equipment, thereon, the moment of electricity can produce larger peak current, cause single-phase inverter power supply overcurrent protection,
So that the reliability of circuit is not high.The EMUs auxiliary power supply system main circuit that the utility model embodiment is provided, passes through
Full-bridge intermediate frequency isolation circuit is set between pre-charge circuit and inverter circuit so that the first threshold inputted in pre-charge circuit
The DC voltage of value passes through before inverter circuit, direct current that can first to the first threshold by the full-bridge intermediate frequency isolation circuit
Pressure is by inversion, boosting, rectification and filtering process, so that the higher DC voltage of magnitude of voltage is obtained, while passing through peak point current
Control mode can suppress to primary current peak value, reduce the magnetic bias of transformer, improve the reliability and effect of main circuit
Rate.Below, by specific embodiment, the technical scheme to the application is described in detail.
It should be noted that these specific embodiments can be combined with each other below, for same or analogous concept
Or process may be repeated no more in certain embodiments.
A kind of structural representation for EMUs auxiliary power supply system main circuit 10 that Fig. 1 provides for the utility model embodiment
Figure, shown in Figure 1, the EMUs auxiliary power supply system main circuit 10 can include：
Pre-charge circuit 101, full-bridge intermediate frequency isolation circuit 102 and inverter circuit 103, wherein, full-bridge intermediate frequency isolation circuit
102 first end is connected with pre-charge circuit 101, the second end of full-bridge intermediate frequency isolation circuit 102 and the first of inverter circuit 103
End connection；Pre-charge circuit 101 is used for the DC voltage that first threshold is inputted to full-bridge intermediate frequency isolation circuit 102；Full-bridge intermediate frequency
Isolation circuit 102 is used to that the second threshold will to be obtained by inversion, boosting, rectification and filtering to the DC voltage of the first threshold of input
The DC voltage of value, and the DC voltage of Second Threshold is inputted to inverter circuit 103；Inverter circuit 103 is used for input
The DC voltage of Second Threshold passes through inversion, obtains the alternating voltage of the 3rd threshold value.
Example, in the utility model embodiment, first threshold can be 110V, and Second Threshold can be 330V, the
Three threshold values can be 230V, certainly, and the utility model embodiment can be simply 110V with first threshold, and Second Threshold can be
330V, the 3rd threshold value can be limited only to this to be illustrated exemplified by 230V, but not representing the utility model, specifically can root
It is configured, is further limited here, not done in the utility model according to being actually needed.
In actual application, pre-charge circuit 101 inputs 110V DC voltages to full-bridge intermediate frequency isolation circuit 102,
The 110V DC voltages of input are passed through inversion, boosting, rectification and filtering process by full-bridge intermediate frequency isolation circuit 102, obtain stabilization
330V DC voltages, and the 330V DC voltages of the stabilization are inputted to inverter, 330V direct current of the inverter to input
Pressure passes through inversion, obtains 230V SPWM alternating current wave pressures.Therefore, by setting full-bridge intermediate frequency isolation circuit 102, to pass through
The 110V DC voltages of input are passed through inversion, boosting, rectification and filtering process by the full-bridge intermediate frequency isolation circuit 102, obtain electricity
The higher 330V DC voltages of pressure value, while being suppressed by peak value comparison method mode to primary current peak value, so as to carry
The high reliability of EMUs auxiliary power supply system main circuit 10.
The EMUs auxiliary power supply system main circuit 10 that the utility model embodiment is provided, including it is pre-charge circuit 101, complete
Bridge intermediate frequency isolation circuit 102 and inverter circuit 103, wherein, the first end and pre-charge circuit of full-bridge intermediate frequency isolation circuit 102
101 connections, the second end of full-bridge intermediate frequency isolation circuit 102 is connected with the first end of inverter circuit 103.As can be seen here, this practicality
The EMUs auxiliary power supply system main circuit 10 that new embodiment is provided, by pre-charge circuit 101 and inverter circuit 103 it
Between full-bridge intermediate frequency isolation circuit 102 is set so that the DC voltage of the first threshold inputted in pre-charge circuit 101 is by inverse
Become before circuit 103, by the full-bridge intermediate frequency isolation circuit 102 can first to the DC voltage of the first threshold by inversion,
Boosting, rectification and filtering process, so as to obtain the higher DC voltage of magnitude of voltage, while can be with by peak value comparison method mode
Primary current peak value is suppressed, the magnetic bias of transformer is reduced, improves the reliability and efficiency of main circuit.
It is further, shown in Figure 2 on the basis of the corresponding embodiments of Fig. 1 based on the corresponding embodiments of Fig. 1,
The structural representation for another EMUs auxiliary power supply system main circuit that Fig. 2 provides for the utility model embodiment, the motor-car
Group auxiliary power supply system main circuit 10 also includes：
Wave filter 104, wave filter 104 is connected with the second end of inverter circuit 103, for export inverter circuit 103
The alternating voltage of 3rd threshold value is transformed to the predetermined waveform alternating voltage of the 3rd threshold value.
3rd threshold value can be 230V, certainly, and the utility model embodiment is simply carried out so that the 3rd threshold value is 230V as an example
Illustrate, but do not represent the utility model to be limited only to this, can specifically be configured according to actual needs, here, in this reality
Further limited with new do not do.
Example, in the utility model embodiment, by setting wave filter 104, its object is to：Filtering can be passed through
The SPWM alternating current wave bucklings for the 3rd threshold value that device 104 exports inverter circuit 103 are changed to the predetermined waveform exchange of the 3rd threshold value
Voltage.Optionally, predetermined waveform can be standard sine wave, certainly, the utility model embodiment simply using predetermined waveform as
Illustrated exemplified by the sine wave of standard, but do not represent the utility model and be limited only to this.
Optionally, it is shown in Figure 3, a kind of knot for pre-charge circuit 101 that Fig. 3 provides for the utility model embodiment
Structure schematic diagram, pre-charge circuit 101 includes：Contactor 101, resistance 1012, IGCT 1013, Support Capacitor 1014 and IGCT
Driving plate 1015, first end, the first end of IGCT 1013 and the IGCT of the first end of contactor 101 respectively with resistance 1012
The first end connection of driving plate 1015, the second end connection of the second end thyristor driver plate 1015 of resistance 1012, IGCT
1013 the second end is connected with the three-terminal link of thyristor driver plate 1015 and the first end of Support Capacitor 1014, Support Capacitor
1014 the second end is connected with the 4th end of thyristor driver plate 1015.
Example, when being charged by pre-charge circuit 101, contactor 1011 controls to close by control panel, precharge
Circuit 101 is started working, and input Support Capacitor (C1- is given by the diode in preliminary filling resistance R0 and thyristor driver plate 1015
C4) 1014 charging, treats that pre-charge process is completed, the drive control IGCT 1013 of thyristor driver plate 1015 is turned on, was pre-charged
Journey terminates.
Optionally, it is shown in Figure 4, a kind of full-bridge intermediate frequency isolation circuit that Fig. 4 provides for the utility model embodiment
102 structural representation, full-bridge intermediate frequency isolation circuit 102 includes insulated gate bipolar transistor IGBT module 1021, intermediate frequency and become
Depressor 1022 and diode panel 1023, the first end of IGBT module 1021 are connected with the second end of pre-charge circuit 101, IGBT
Second end of module 1021 is connected with the first end of intermediate-frequency transformer 1022 and the second end, the 3rd end of intermediate-frequency transformer 1022 with
The first end connection of diode panel 1023, the second end of diode panel 1023 is connected with inverter circuit 103, IGBT module 1021
Alternating voltage for the DC voltage of the first predetermined threshold value of input to be reverse into the 4th threshold value, intermediate-frequency transformer 1022 is used for
The alternating voltage of 4th threshold value is handled by boosting, the alternating voltage of the 5th threshold value is obtained, diode panel 1023 is used for the
The alternating voltage of five threshold values obtains the DC voltage of Second Threshold through over commutation and filtering process, and by the direct current of Second Threshold
Control source is to inverter circuit 103.
Optionally, IGBT module 1021 includes the first pipe group VT1 and the second pipe group VT2, VT1 first end and precharge electricity
The second end connection on road 101, VT1 the second end and VT2 first end are connected, VT1 the 3rd end and intermediate-frequency transformer 1022
First end is connected, and VT2 the second end is connected with the second end of intermediate-frequency transformer 1022.
Optionally, diode panel 1023 includes commutation diode group, the first filter inductance, diode absorption circuit and support
Capacitance group, the first end of commutation diode group is connected with intermediate-frequency transformer 1022, and the second end of commutation diode group is respectively with
The first end of one filter inductance and the first end connection of diode absorption circuit, the second end Support Capacitor group of commutation diode group
First end connection, the second end of the first filter inductance is connected with the second end of Support Capacitor group.
Optionally, commutation diode group includes four commutation diodes, the first end of the first commutation diode and the 3rd whole
The first end connection of diode is flowed, the second end of the first commutation diode is connected with the first end of the second commutation diode, second
Second end of commutation diode is connected with the first end of the 4th commutation diode, and the 3rd end of the second commutation diode is respectively with
One filter inductance and diode absorption circuit connection, the second end of the 3rd commutation diode connects with the 4th the second end of commutation diode
Connect, the 3rd end of the 4th commutation diode is connected with diode absorption circuit and Support Capacitor group；Diode absorption circuit includes
5th commutation diode, the first electric capacity and the second electric capacity, the first end of the 5th commutation diode are connected with commutation diode group, the
Second end of five commutation diodes is connected with the first end of the first electric capacity and the first end of the second electric capacity respectively, and the of the first electric capacity
Two ends and the second end of the second electric capacity are connected with commutation diode group and Support Capacitor group；Support Capacitor group includes the first support
Electric capacity, the second Support Capacitor, the 3rd Support Capacitor and the 4th Support Capacitor, the first end of the first Support Capacitor, the second support electricity
The first end of appearance, the first end of the 3rd Support Capacitor and the first end of the 4th Support Capacitor are connected with the first filter inductance, the
Second end of one Support Capacitor, the second end of the second Support Capacitor, the second end of the 3rd Support Capacitor and the 4th Support Capacitor
Second end is connected with diode absorption circuit.
Completed by pre-charge circuit 101 after being pre-charged, full-bridge intermediate frequency isolation circuit 102 is started working.Specially：
VT1 and VT2 uses high withstand voltage, the IGBT module of high reliability 1021, and control panel and driving plate control opening for VT1 and VT2 simultaneously
Logical and shut-off.The upper pipe and VT2 down tube of IC devices control VT1 in control panel is simultaneously turned on, and control VT1 upper pipe and
VT2 down tube is simultaneously turned off, while managing and being closed in VT1 down tube and VT2, is circulated by such a by the direct current of input
Inversion is pressed to be exported for ac square-wave voltage, while control panel by gathering intermediate frequency link DC bus-bar voltage in real time, when input electricity
By adjusting the dutycycle that IGBT drives during pressure fluctuation, it is ensured that intermediate frequency DC link busbar voltage maintains DC330V, input
DC voltage is reverse into after square wave by VT1 and VT2, is boosted again by intermediate-frequency transformer 1022, diode panel 1023 is exported surely
Fixed 330V DC voltages are powered to follow-up inverter circuit 103.Therefore, by pre-charge circuit 101 and inverter circuit 103 it
Between full-bridge intermediate frequency isolation circuit 102 is set so that the 110V inputted in pre-charge circuit 101 DC voltage is by inversion electricity
Before road 103, inversion, boosting, rectification first can be passed through to the DC voltage of the 110V by the full-bridge intermediate frequency isolation circuit 102
And filtering process, so that the higher 330V of magnitude of voltage DC voltage is obtained, while can be right by peak value comparison method mode
Primary current peak value is suppressed, and is reduced the magnetic bias of transformer, the reliability and efficiency of main circuit is improved, further, since adopting
With high frequency transformer, the volume and weight of inverter can also be further reduced.
Optionally, it is shown in Figure 5, a kind of structure for inverter circuit 103 that Fig. 5 provides for the utility model embodiment
Schematic diagram, inverter circuit 103 includes：Inverter power plate 1031 and inversion control plate 1032, the first end of inverter power plate 1031
It is connected with the second end of full-bridge intermediate frequency isolation circuit 102, the of the second end of inverter power plate 1031 and inversion control plate 1032
One end is connected.
Example, when have on vehicle start control signal feeding inverter circuit 103 after, can in 6S by full-bridge intermediate frequency every
From circuit 102 export DC330V voltages by control the inverter bridge of IGBT module 1021 be reverse into single-phase 230V SPWM ripples it is defeated
Go out.The RJ45 network interfaces of inversion control plate 1032 can connect debugging panel, can be with display output voltage, output by debugging panel
The parameters such as frequency, electric current.
Optionally, it is shown in Figure 6, a kind of structure for wave filter 104 that Fig. 6 provides for the utility model embodiment
Schematic diagram, wave filter 104 includes the second filter inductance 1041, the first filter capacitor 1042 and the second filter capacitor 1043, second
The first end of filter inductance 1041 is connected with inverter circuit 103, the second end and the first filter capacitor of the second filter inductance 1041
1042 and second filter capacitor 1043 first end connection, the second end of the first filter capacitor 1042 and the second filter capacitor 1043
It is connected with inverter circuit 103.
Example, in the utility model embodiment, by setting wave filter 104, inverter circuit 103 can be exported
Harmonic wave of the SPWM wave conversions into the sine wave, the effectively output of control inverter of standard.
In actual application, the straight of 110V is inputted to full-bridge intermediate frequency isolation circuit 102 by pre- pre-charge circuit 101
The DC voltage for flowing the 110V that the TGBT modules in voltage, full-bridge intermediate frequency isolation circuit 102 input pre-charge circuit 101 turns
44V or so ac square-wave voltage is changed to, and is inputted to intermediate-frequency transformer 1022, the intermediate-frequency transformer inputs TGBT modules
The alternating voltage that 44V or so ac square-wave voltage boosting is 230V, and input to diode panel 1023, the diode panel 1023
The alternating voltage for the 230V that intermediate-frequency transformer 1022 is exported is converted to stable 330V DC voltages through over commutation, filtering, and
Input is to inverter circuit 103, and the 330V DC voltages inversion that the inverter circuit 103 exports diode panel is 230V SPWM ripples
Alternating current, and input the SPWM alternating current waves turn for the 230V for inverter circuit 103 being exported to wave filter 104, the wave filter 104
230V standard sine alternating current wave is changed to, so as to provide voltage for the equipment in train.As can be seen here, it is real in the utility model
Apply in example, by setting full-bridge intermediate frequency isolation circuit 102 between pre-charge circuit 101 and inverter circuit 103 so that in preliminary filling
The 110V inputted in circuit 101 DC voltage passes through before inverter circuit 103, passes through the full-bridge intermediate frequency isolation circuit 102
Inversion, boosting, rectification and filtering process first can be passed through to the DC voltage of the 110V, so as to obtain the higher 330V of magnitude of voltage
DC voltage, while can be suppressed by peak value comparison method mode to primary current peak value, reduction transformer it is inclined
Magnetic, improves the reliability and efficiency of main circuit 10, further, since employing high frequency transformer, can also further reduce inverse
Become the volume and weight of device.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
1. a kind of EMUs auxiliary power supply system main circuit, it is characterised in that including：
Pre-charge circuit, full-bridge intermediate frequency isolation circuit and inverter circuit, wherein, the first end of the full-bridge intermediate frequency isolation circuit with
The pre-charge circuit connection, the second end of the full-bridge intermediate frequency isolation circuit is connected with the first end of the inverter circuit；Institute
State the DC voltage that pre-charge circuit is used to input first threshold to the full-bridge intermediate frequency isolation circuit；The full-bridge intermediate frequency isolation
Circuit is used to that the straight of Second Threshold will to be obtained by inversion, boosting, rectification and filtering to the DC voltage of the first threshold of input
Voltage is flowed, and the DC voltage of the Second Threshold is inputted to the inverter circuit；The inverter circuit is used for input
The DC voltage of Second Threshold passes through inversion, obtains the alternating voltage of the 3rd threshold value.
2. main circuit according to claim 1, it is characterised in that also include：
Wave filter, the wave filter is connected with the second end of the inverter circuit, for the inverter circuit is exported the 3rd
The alternating voltage of threshold value is transformed to the predetermined waveform alternating voltage of the 3rd threshold value.
3. main circuit according to claim 2, it is characterised in that
The full-bridge intermediate frequency isolation circuit includes insulated gate bipolar transistor IGBT module, intermediate-frequency transformer and diode panel,
The first end of the IGBT module is connected with the second end of the pre-charge circuit, the second end of the IGBT module with it is described in
The first end of frequency power transformer and the connection of the second end, the 3rd end of the intermediate-frequency transformer connects with the first end of the diode panel
Connect, the second end of the diode panel is connected with the inverter circuit, the IGBT module is used for the first of input the default threshold
The DC voltage of value is reverse into the alternating voltage of the 4th threshold value, and the intermediate-frequency transformer is used for the alternating current of the 4th threshold value
Pressure obtains the alternating voltage of the 5th threshold value by boosting processing, and the diode panel is used for the alternating current of the 5th threshold value
Pressure obtains the DC voltage of the Second Threshold through over commutation and filtering process, and the DC voltage of the Second Threshold is defeated
Enter to the inverter circuit.
4. main circuit according to claim 3, it is characterised in that
The IGBT module includes the first pipe group and the second pipe group, first end and the pre-charge circuit of the first pipe group
Second end is connected, and the second end of the first pipe group is connected with the first end of the second pipe group, and the 3rd of the first pipe group the
End is connected with the first end of the intermediate-frequency transformer, and the second end of the second pipe group connects with the second end of the intermediate-frequency transformer
Connect.
5. main circuit according to claim 4, it is characterised in that
The diode panel includes commutation diode group, the first filter inductance, diode absorption circuit and Support Capacitor group, described
The first end of commutation diode group is connected with the intermediate-frequency transformer, and the second end of the commutation diode group is respectively with described
The first end of one filter inductance and the connection of the first end of the diode absorption circuit, the second end institute of the commutation diode group
The first end connection of Support Capacitor group is stated, the second end of first filter inductance and the second end of the Support Capacitor group connect
Connect.
6. main circuit according to claim 5, it is characterised in that
The commutation diode group includes four commutation diodes, the first end of the first commutation diode and the 3rd commutation diode
First end connection, the second end of first commutation diode is connected with the first end of the second commutation diode, described second
Second end of commutation diode is connected with the first end of the 4th commutation diode, the 3rd end difference of second commutation diode
It is connected with first filter inductance and the diode absorption circuit, the second end of the 3rd commutation diode and described the
Four the second ends of commutation diode are connected, the 3rd end and the diode absorption circuit and the branch of the 4th commutation diode
Support capacitance group connection；
The diode absorption circuit includes the 5th commutation diode, the first electric capacity and the second electric capacity, the pole of the 5th rectification two
The first end of pipe is connected with the commutation diode group, the second end of the 5th commutation diode respectively with first electric capacity
First end and the second electric capacity first end connection, the second end of the second end of first electric capacity and second electric capacity with
The commutation diode group and Support Capacitor group connection；
The Support Capacitor group includes the first Support Capacitor, the second Support Capacitor, the 3rd Support Capacitor and the 4th Support Capacitor, institute
State the first end of the first Support Capacitor, the first end of second Support Capacitor, the first end of the 3rd Support Capacitor and institute
The first end for stating the 4th Support Capacitor is connected with first filter inductance, and the second end of first Support Capacitor is described
Second end of the second Support Capacitor, the second end of the 3rd Support Capacitor and the second end of the 4th Support Capacitor are and institute
State diode absorption circuit connection.
7. the main circuit according to claim any one of 1-6, it is characterised in that
The pre-charge circuit includes：Contactor, resistance, IGCT, Support Capacitor and thyristor driver plate, the contactor
The first end of first end first end respectively with the resistance, the first end of the IGCT and the thyristor driver plate connects
Connect, the second end connection of thyristor driver plate described in the second end of the resistance, the second end of the IGCT and the brilliant lock
The first end connection of the three-terminal link and the Support Capacitor of pipe driving plate, the second end of the Support Capacitor and the brilliant lock
The 4th end connection of pipe driving plate.
8. main circuit according to claim 7, it is characterised in that
The inverter circuit includes：Inverter power plate and inversion control plate, first end and the full-bridge of the inverter power plate
The second end connection of intermediate frequency isolation circuit, the second end of the inverter power plate is connected with the first end of the inversion control plate.
9. main circuit according to claim 8, it is characterised in that
The wave filter includes the second filter inductance, the first filter capacitor and the second filter capacitor, second filter inductance
First end is connected with the inverter circuit, the second end of second filter inductance and first filter capacitor and described second
Second end of the first end connection of filter capacitor, first filter capacitor and second filter capacitor is electric with the inversion
Road is connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621252969.9U CN206442313U (en) | 2016-11-22 | 2016-11-22 | EMUs auxiliary power supply system main circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621252969.9U CN206442313U (en) | 2016-11-22 | 2016-11-22 | EMUs auxiliary power supply system main circuit |
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| CN206442313U true CN206442313U (en) | 2017-08-25 |
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| CN201621252969.9U Active CN206442313U (en) | 2016-11-22 | 2016-11-22 | EMUs auxiliary power supply system main circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038565A (en) * | 2018-08-16 | 2018-12-18 | 中车唐山机车车辆有限公司 | The grid-connected method of supplying power to of auxiliary power supply system and management system |
| CN111327102A (en) * | 2018-12-13 | 2020-06-23 | 中车唐山机车车辆有限公司 | Capacitor box of magnetic suspension train, magnetic suspension train and voltage stabilization control method |
-
2016
- 2016-11-22 CN CN201621252969.9U patent/CN206442313U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038565A (en) * | 2018-08-16 | 2018-12-18 | 中车唐山机车车辆有限公司 | The grid-connected method of supplying power to of auxiliary power supply system and management system |
| CN111327102A (en) * | 2018-12-13 | 2020-06-23 | 中车唐山机车车辆有限公司 | Capacitor box of magnetic suspension train, magnetic suspension train and voltage stabilization control method |
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