CN209250516U - A kind of conditioning circuit taking electricity for tractive power supply system pressure stabilizing - Google Patents
A kind of conditioning circuit taking electricity for tractive power supply system pressure stabilizing Download PDFInfo
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- CN209250516U CN209250516U CN201822132870.0U CN201822132870U CN209250516U CN 209250516 U CN209250516 U CN 209250516U CN 201822132870 U CN201822132870 U CN 201822132870U CN 209250516 U CN209250516 U CN 209250516U
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Abstract
The utility model discloses a kind of conditioning circuit that electricity is taken for tractive power supply system pressure stabilizing, wherein mutual inductor circuit is connect by rectifier circuit with detection circuit, CPU element circuit respectively with mutual inductor circuit, rectifier circuit is connected with detection circuit, mutual inductor circuit, which is used to incude to take with train traction power supply line, supplies electricity to the power supply of each unit circuit, mutual inductor is equipped with the first contact and two the second contacts positioned at different location, CPU element circuit controls conditioning circuit and mutual inductor equipped with taking the first contact being electrically connected and select the access of two second contacts of connection by relay.Beneficial effect is, closed loop is adjusted due to collectively constituting voltage and current, mutual inductor selects diverse access point by relay, change induction power supply size by accessing the mutual inductor of different the number of turns, avoid the problem that CPU element circuit occur when load current amplitude variation in the line adjusts rectifier bridge reaction not in time, guarantees monitoring device powered stable.
Description
Technical field
The utility model relates to iron cores to take electrical domain, and in particular to a kind of conditioning that electricity is taken for tractive power supply system pressure stabilizing
Circuit.
Background technique
There are acceleration, coasting and the various states of braking in the process of running in train, and, train is by line slope, bend
The influence of the variation of train quantity in the factors such as radius, meteorological condition and driver operation, supply arm, therefore, train was being run
For electric load in journey compared with other electric loads, the tractive power supply system load for train has impact and random
Property, wherein the electric current meeting randomness of traction power supply route fluctuates widely.Existing traction electric locomotive is that fluctuation is very big
High-power single-phase rectifies load, and power supply system can generate a large amount of high frequency subharmonic when operation, also, not with type of train
Together, the wave distortion of power supply system is different, and harmonic frequency is different.
With the development of tractive power supply system O&M technology, more and more monitoring devices are mounted on traction power supply route
On, in order to enable monitoring device longtime running, maintenance work amoun is reduced, monitoring device more and more uses iron core to take electricity side
Formula self-powered.Electric current on tractive power supply system route includes impact load and operation harmonic wave, and monitoring device iron core is caused to take
The spread of voltage of electricity, it cannot be guaranteed that the normal power supply of each monitoring function circuit, it is unstable to will lead to device performance, influences data
The accuracy of monitoring, the case where reducing service using life, even resulting in failure generation.Therefore, it is necessary to iron core take electricity into
Row conditioning, to obtain stable power supply output.
Current transmission and distribution line road takes electricity, in order to make output voltage stabilization, has and takes rectifier bridge combination PID control tune
The method of section, however, pid control parameter is adjusted, voltage change needs a time course, for tractive power supply system load
The amplitude of electric current, randomness variation cannot be timely and effectively adjusted；Passive filter is often used for harmonic wave, due to passive
Filter is operating only at specific frequency, and often has multiple frequency operation harmonic waves on tractive power supply system route, filters according to multiple groups
Wave device influences each other between design complexity and each group tuned filter, becomes difficult tuning.
Therefore, take power supply without effectively improving pressure stabilizing scheme tractive power supply system route upper core at present.
Summary of the invention
Technical problem to be solved by the utility model is to provide a kind of conditionings that electricity is taken for tractive power supply system pressure stabilizing
Circuit can carry out taking electricity from tractive power supply system route, and carry out stablizing output.
The technical scheme adopted by the utility model is that a kind of conditioning circuit for taking electricity for tractive power supply system pressure stabilizing, packet
It includes, mutual inductor circuit, rectifier circuit, detection circuit and CPU element circuit U 1；The mutual inductor circuit passes through rectifier bridge
Circuit is connect with detection circuit, and CPU element circuit U 1 is connect with mutual inductor circuit, rectifier circuit and detection circuit respectively,
Mutual inductor circuit, which is used to incude to take with train traction power supply line, supplies electricity to the power supply of each unit circuit, and mutual inductor is equipped with first
Contact A and two second contacts B, C positioned at different location, CPU element circuit U 1 control this conditioning circuit by relay K1
The access for taking the first contact A being electrically connected and selecting two second contacts B, C of a connection is equipped with mutual inductor.
It further include having the protection circuit and output circuit connecting with rectifier circuit；The protection circuit passes through output circuit
It is connect with monitoring device power supply circuit；Detection circuit further includes having voltage detecting circuit and current detection circuit, current detecting electricity
Road further includes operational amplifier A1.
The integrated circuit model that the CPU element circuit U 1 30 uses is STM32L 151, the field of rectifier circuit use
Effect pipe is N-channel MOS pipe, and the field-effect tube that protection circuit uses is P-channel metal-oxide-semiconductor.
The utility model has the beneficial effects that due to mutual inductor, rectifier circuit, detection circuit, CPU element circuit U 1
It has collectively constituted a voltage and current and has adjusted closed loop, mutual inductor selects different access points by relay K1, i.e., by connecing
Enter the mutual inductor of different the number of turns to change the size of induction power supply, when avoiding load current amplitude variation in the line
There is the problem of CPU element circuit U 1 adjusts rectifier bridge reaction not in time, further ensures the stabilization of monitoring device power supply.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model conditioning circuit.
In figure:
10, mutual inductor circuit 20, rectifier circuit
30, CPU element circuit U 1 40, detection circuit
50, circuit 60, output circuit are protected.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description:
Fig. 1 is the circuit diagram of conditioning circuit in the utility model embodiment.
As shown in Figure 1, a kind of conditioning circuit for taking electricity for tractive power supply system pressure stabilizing of the utility model, conditioning circuit are used
In the monitoring device stable power-supplying for train traction power supply system, including mutual inductor circuit 10, rectifier circuit 20, detection electricity
Road 40 and CPU element circuit U 1 30, mutual inductor circuit 10 are connect by rectifier circuit 20 with detection circuit 40, CPU element
Circuit U 1 is connect with mutual inductor circuit 10, rectifier circuit 20 and detection circuit 40 respectively, mutual inductor circuit 10 be used for
The induction of train traction power supply line, which takes, supplies electricity to the power supply of each unit circuit, and mutual inductor is equipped with the first contact A and is located at different positions
Two second contacts B, the C set, CPU element circuit U 1, which by relay K1 controls this conditioning circuit and mutual inductor and is equipped with, to be taken
First contact A of electrical connection and the access for selecting two second contacts B, C of a connection.
Relay K1 connection supply voltage VCC, and relay K1 is also connected with the 6th resistance R6, the 7th resistance R7 and triode
T1, the 6th one end resistance R6 are connect with relay K1, and the other end of the 6th resistance is connect with the collector of triode T1, triode
The emitter of T1 is grounded, and the base stage of triode T1 is connect with one end of the 7th resistance R7, and the other end and CPU of the 7th resistance R7 is mono-
First circuit U 1 connects, and the CPU element circuit U 1 control relay K1 can be made to make first in rectifier circuit and mutual inductor
Contact and the access for selecting two second contacts B, C of a connection.
Rectifier circuit 20 includes the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, third metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4, is
N-channel MOS pipe, the grid of the first metal-oxide-semiconductor Q1, the grid of the second metal-oxide-semiconductor Q2, third metal-oxide-semiconductor Q3 grid and the 4th metal-oxide-semiconductor Q4
Grid connect respectively with 4,2,3 and No. 1 I/O interfaces of CPU element circuit U 1, the drain electrode of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor
It is connect after the drain electrode of Q2 is in parallel with the central contact of relay K1, the source electrode point of the source electrode of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2
It is not connect with the drain electrode and the drain electrode of the 4th metal-oxide-semiconductor Q4 of third metal-oxide-semiconductor Q3, the source electrode of third metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4's
It is connect after sources connected in parallel with the first contact, and the drain electrode of the source electrode and the 4th metal-oxide-semiconductor Q4 of the second metal-oxide-semiconductor Q2 is grounded, and passes through CPU
Element circuit U1 controls the grid and the 4th MOS of the grid of the first metal-oxide-semiconductor Q1, the grid of the second metal-oxide-semiconductor Q2, third metal-oxide-semiconductor Q3
The voltage of the grid of pipe Q4 guarantees that electricity is stablized in rectifier circuit output to adjust the voltage and current for passing through the rectifier circuit
Pressure and electric current.
It further include having the protection circuit 50 and output circuit 60 connecting with rectifier circuit, protection circuit 50 passes through output electricity
Road 60 is connect with monitoring device power supply circuit；Detection circuit further includes having voltage detecting circuit and current detection circuit, electric current inspection
Slowdown monitoring circuit includes operational amplifier A1.
Detection circuit 40 includes the voltage detecting circuit and current detection circuit for being respectively used to detection rectifier circuit output,
No. 5 I/O interfaces of CPU element circuit U 1 are connect with the control terminal of relay K1, the inspection of 1 receiving test circuit of CPU element circuit U
Measured data, control relay K1 adjust the access point of rectifier circuit, and CPU element circuit U 1 is adjusted whole by PID process control
The voltage and electric current that stream bridge circuit passes through, wherein No. 6 I/O interfaces of CPU element circuit U 1 connect supply voltage VCC, and described
No. 10 I/O interfaces of CPU element circuit U 1 are grounded.
Mutual inductor takes and generally comprises high-frequency harmonic electric current in electric current, and mutual inductor the number of turns is fewer, the harmonic high frequency of generation
Wave can generate impedance when alternating current passes through mutual inductor with regard to smaller, be signal according to the formula of impedance ZL=jwL, w of inductance
Angular frequency, frequency more high impedance is higher, and therefore, coil hinders high frequency, leads to low frequency, can play to induced current medium-high frequency harmonic wave
Filtration.
Voltage detecting circuit includes the first resistor R1 and second resistance R2 of partial pressure type sampling, the electricity of first resistor R1 and second
Sampling voltage between resistance R2 is output to No. 7 I/O interfaces of CPU element circuit U 1, and CPU element circuit U 1 is obtained by digital-to-analogue conversion
To the output voltage values of rectifier circuit.That is, voltage detecting circuit includes the source electrode or the 3rd MOS of one end Yu the first metal-oxide-semiconductor Q1
The first resistor R1 of the drain electrode connection of pipe Q3 and one end with connect after the parallel connection of single-chip microcontroller U1 with the first resistor R1 other end the
Two resistance R2, wherein No. 7 I/O interfaces of single-chip microcontroller U1 are connected between first resistor R1 and second resistance R2, second resistance R2's
Other end ground connection, according to partial pressure mensuration, single-chip microcontroller U1 obtains the output voltage values of rectifier circuit by digital-to-analogue conversion.
Current detection circuit includes operational amplifier A1 and the 3rd resistor R3 in parallel with operational amplifier A1 output end, fortune
The non-inverting input terminal for calculating amplifier A1 is connect with No. 8 I/O interfaces of CPU element circuit U 1, the inverting input terminal of operational amplifier A1
Ground connection, operational amplifier A1 amplify the voltage at the both ends 3rd resistor R3, and CPU element circuit U 1 obtains rectifier bridge by digital-to-analogue conversion
The output current value of circuit.
Conditioning circuit further includes having protection circuit, and protection circuit is connect by output circuit with monitoring device power supply circuit.
Protecting circuit includes the 4th resistance R4, the 5th resistance R5 and the 5th metal-oxide-semiconductor Q5, and the 5th metal-oxide-semiconductor Q5 is P-channel metal-oxide-semiconductor, the 4th electricity
Connect after resistance one end R4 is connect with the source electrode of the 5th metal-oxide-semiconductor Q5 and with the output end of detection circuit, the 4th resistance R4 other end and
It is connect after the grid connection of 5th metal-oxide-semiconductor Q5 and with the 5th one end resistance R5, the 5th resistance R5 other end and CPU element circuit U 1
No. 9 I/O interfaces connection, for connecting with monitoring device, CPU element circuit U 1 passes through detection circuit for the drain electrode of the 5th metal-oxide-semiconductor Q5
Detection data adjust the 5th metal-oxide-semiconductor Q5 grid voltage so that in high and low level range the source electrode of the 5th metal-oxide-semiconductor Q5 and
Drain electrode is access, and the source electrode and drain electrode of the 5th metal-oxide-semiconductor Q5 is open circuit outside high and low level range, ensure that voltage and current is defeated
Safety out；And detection circuit, CPU element circuit U 1 and protection circuit collectively constitute an over-voltage over-current protection closed loop, protect
The electrical safety that the monitoring device being installed on tractive power supply system route respectively uses electric device is demonstrate,proved.
Conditioning circuit further includes having output circuit, the output end connection of output circuit one end and detection circuit, output circuit
The other end with monitoring device for connecting, and output circuit is for exporting burning voltage and electric current；Output circuit includes first capacitor
C1 and the second capacitor C2, first capacitor C1 are band polar capacitor, and the second capacitor C2 is and the first capacitor C1 without polar capacitor
Anode is connected to the output end of detection circuit, the cathode of first capacitor C1 and the second capacitor after connecting with a pole of the second capacitor C2
It is grounded after another pole connection of C2, by the way that first capacitor C1 and the second capacitor C2 is arranged, filtering clutter can be played and energy storage is steady
The effect of pressure, make it is more stable by the voltage and current of the output circuit, to improve the electricity consumption that monitoring device respectively uses electric device
Safety.
Mutual inductor, rectifier circuit, detection circuit in this conditioning circuit, CPU element circuit U 1 have collectively constituted one
A voltage and current adjusts closed loop, and mutual inductor selects different access points by relay K1, i.e., by accessing different the number of turns
There is CPU element when avoiding load current amplitude variation in the line come the size for changing induction power supply in mutual inductor
The problem of circuit U 1 adjusts rectifier bridge reaction not in time；Mutual inductor is adjusted using PID process control by CPU element circuit U 1
The transformation of second contact and the mode combined with rectifier circuit make the adjusting circuit can adapt to train traction power supply system
The variation of line load electric current amplitude randomness, and can effectively reduce and run harmonic wave on tractive power supply system route to the conditioning
The influence of circuit makes conditioning circuit output burning voltage and electric current.
It is worth noting that the protection scope of the utility model is not limited to above-mentioned specific example mode, according to this reality
Conceived with novel basic fundamental, it is also possible to which the purpose of this utility model may be implemented in basically same structure, as long as this field
Those of ordinary skill needs not move through creative work, the embodiment that can be associated, and belongs to the protection model of the utility model
It encloses.
Claims (3)
1. a kind of conditioning circuit for taking electricity for tractive power supply system pressure stabilizing, which is characterized in that including mutual inductor circuit
(10), rectifier circuit (20), detection circuit (40) and CPU element circuit U 1 (30)；The mutual inductor circuit (10) passes through
Rectifier circuit (20) is connect with detection circuit (40), CPU element circuit U 1 (30) respectively with mutual inductor circuit (10), whole
Bridge circuit (20) and detection circuit (40) connection are flowed, mutual inductor circuit (10), which is used to incude with train traction power supply line, takes electricity
The power supply of each unit circuit is given, mutual inductor is equipped with the first contact A and two second contact B, C positioned at different location, and CPU is mono-
First circuit U 1 (30) by relay K1 control this conditioning circuit and mutual inductor be equipped with take the first contact A being electrically connected and
Select the access of two second contacts B, C of a connection.
2. the conditioning circuit according to claim 1 for taking electricity for tractive power supply system pressure stabilizing, which is characterized in that further include
There are the protection circuit (50) and output circuit (60) connecting with rectifier circuit；The protection circuit (50) passes through output circuit
(60) it is connect with monitoring device power supply circuit；Detection circuit further includes having voltage detecting circuit and current detection circuit, electric current inspection
Slowdown monitoring circuit further includes operational amplifier A1.
3. the conditioning circuit according to claim 1 or 2 for taking electricity for tractive power supply system pressure stabilizing, which is characterized in that institute
The integrated circuit model that CPU element circuit U 1 (30) uses is stated as STM32L 151, the field-effect that rectifier circuit (20) uses
Pipe is N-channel MOS pipe, and the field-effect tube that protection circuit (50) uses is P-channel metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132870.0U CN209250516U (en) | 2018-12-18 | 2018-12-18 | A kind of conditioning circuit taking electricity for tractive power supply system pressure stabilizing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132870.0U CN209250516U (en) | 2018-12-18 | 2018-12-18 | A kind of conditioning circuit taking electricity for tractive power supply system pressure stabilizing |
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| CN209250516U true CN209250516U (en) | 2019-08-13 |
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| CN201822132870.0U Active CN209250516U (en) | 2018-12-18 | 2018-12-18 | A kind of conditioning circuit taking electricity for tractive power supply system pressure stabilizing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111391893A (en) * | 2020-02-27 | 2020-07-10 | 北京交通大学 | Subway train position detection system |
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2018
- 2018-12-18 CN CN201822132870.0U patent/CN209250516U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111391893A (en) * | 2020-02-27 | 2020-07-10 | 北京交通大学 | Subway train position detection system |
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