CN220639528U - Power supply device for locomotive moving - Google Patents
Power supply device for locomotive moving Download PDFInfo
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- CN220639528U CN220639528U CN202321392042.5U CN202321392042U CN220639528U CN 220639528 U CN220639528 U CN 220639528U CN 202321392042 U CN202321392042 U CN 202321392042U CN 220639528 U CN220639528 U CN 220639528U
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 16
- 229910052744 lithium Inorganic materials 0.000 claims description 16
- 239000003990 capacitor Substances 0.000 claims description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 7
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 claims description 6
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Abstract
The application discloses power supply unit for locomotive moves car, this power supply unit installs in the body of being moved the locomotive, and this power supply unit includes: the storage battery is used for converting the output power of the storage battery into a direct current power supply and then converting the direct current power supply into an alternating current power supply for the body of the moved locomotive, or converting the output power of the storage battery into a pulse width modulation power supply and then adjusting the pulse width modulation power supply into a converter of the alternating current power supply, wherein the voltage of the direct current power supply is larger than that of the output power supply of the storage battery. The method and the device can cancel the cost input of the power supply of the motor car in the ground warehouse, avoid other safety and other problems caused by the motor car cable in the warehouse, and solve the technical defects of high-rate discharge, high voltage drop of the storage battery and the like and the problems of charging equipment input and the like caused by insufficient residual electric quantity.
Description
Technical Field
The utility model relates to the technical field of electric locomotives, in particular to a power supply device for locomotive movement.
Background
At present, an electric locomotive of a part of models does not have a self-running function, and when an in-warehouse power supply or an attached shunting locomotive is used as a power source for carrying out in-warehouse or line-transferring and running moving operation when an in-warehouse locomotive overhauls a warehouse or a service yard transfers lines from an electrified area to an electroless area. The power supply in the warehouse needs long cable connection, and is not suitable for the vehicle moving function of the servicing field; the adoption of the attached shunting machine for shunting has the problems of long shunting time, low efficiency and the like.
Disclosure of Invention
The utility model provides a power supply device for locomotive moving, which is used for solving the problem of providing an electric power supply when an electric locomotive without a self-walking function enters and exits a locomotive maintenance warehouse or transfers line operation from an electric area to an electric area in a servicing yard.
A first aspect of the present utility model provides a power supply apparatus for a locomotive moving, the power supply apparatus being mounted in a body of a moved locomotive, the power supply apparatus comprising:
the storage battery is provided with a storage battery,
a converter for chopping the output power of the storage battery into a direct current power supply and converting the direct current power supply into an alternating current power supply for the body of the moved locomotive, or converting the output power of the storage battery into a pulse width modulation power supply and adjusting the pulse width modulation power supply into the alternating current power supply,
wherein,
the DC power supply voltage is greater than the battery output power supply voltage.
Preferably, the current transformer includes: the system comprises a first converter for chopping an output power supply of a storage battery into a direct current power supply and a second converter for inverting the direct current power supply output by the first converter into an alternating current power supply, wherein the direct current power supply voltage is a direct current power supply voltage for a body of a moved locomotive, and the output end of the first converter is communicated with a first connecting interface for providing the direct current power supply for the body of the moved locomotive;
or,
the current transformer includes: the device comprises a third converter for chopping the output power of the storage battery into a direct current power supply, a first converter for chopping the output power of the storage battery into the direct current power supply, and a second converter for inverting the direct current power supply output by the first converter into an alternating current power supply, wherein the direct current power supply voltage inverted by the third converter is the direct current power supply voltage for the body of the moved locomotive, the input end of the third converter is communicated with the output power end of the storage battery through a first contactor for power on-off and load isolation, and the output end of the third converter is communicated with the first connecting interface;
the input end of the first converter is communicated with the output power end of the storage battery through the first contactor,
the storage battery comprises a protection circuit for the charge and discharge protection of the storage battery,
the storage battery is a lead-acid battery, a lithium titanate battery, a lithium battery, a nickel-hydrogen battery or a nickel-cadmium battery.
Preferably, the first converter is a chopper for chopping and boosting direct-current voltage output by the storage battery, and the output end of the first converter is communicated with the input end of the second converter through a second contactor for switching on and switching off a power supply and isolating a load;
the output end of the second converter is communicated with a second connecting interface for providing alternating current power supply for the body of the moved locomotive.
Preferably, the chopper comprises a multi-stage dc/dc boost circuit,
the alternating-current power supply is a three-phase alternating-current power supply,
the second converter comprises a multi-level bridge inverter circuit and a filter circuit for suppressing voltage harmonics,
the output end of the second converter is also communicated with a third connecting interface for providing alternating current non-power supply for the body of the moved locomotive,
the storage battery is an existing storage battery in the locomotive body, and the power supply device is integrated in the existing storage battery.
Preferably, the current transformer includes: a fourth converter for inverting the battery output power to a pulse width modulated power, and a transformer for boosting the pulse width modulated power to an ac power supply voltage,
the input end of the fourth converter is communicated with the output power end of the storage battery through a third contactor for switching on and switching off the power supply and isolating the load,
the output end of the fourth converter is connected with the input end of the transformer,
the output end of the transformer is communicated with a fourth connecting interface for providing alternating current power supply for the body of the moved locomotive;
the storage battery comprises a protection circuit for storage battery charge and discharge protection;
the storage battery is a lead-acid battery, a lithium titanate battery, a lithium battery, a nickel-hydrogen battery or a nickel-cadmium battery.
Preferably, the fourth converter comprises a multi-level bridge inverter circuit and a filter circuit for suppressing voltage harmonics,
the alternating-current power supply is a three-phase alternating-current power supply,
the current transformer further includes: a rectifier for rectifying an alternating current power supply into a direct current power supply,
the output end of the transformer is communicated with the input end of the rectifier through a fourth contactor for switching on and off of a power supply and load isolation,
the output end of the rectifier is communicated with a fifth connecting interface for providing direct-current power supply for the body of the moved locomotive.
Preferably, the rectifier comprises a three-phase uncontrolled rectifying circuit or a three-phase four-quadrant rectifying circuit,
the output end of the transformer is also communicated with a sixth connecting interface for providing alternating current non-power supply for the body of the moved locomotive.
Preferably, the transformer is a high leakage inductance three-phase-three-phase/four-wire transformer,
the output end of the transformer is also connected with a filter circuit for suppressing voltage harmonics.
Preferably, the filter circuit is a three-phase filter inductor, and/or a three-phase filter capacitor,
a second aspect of the present application provides a locomotive incorporating a power supply apparatus for locomotive movement as described in any one of the preceding.
The power supply device for locomotive moving provided by the application inverts the power supply provided by the existing storage battery in the locomotive into the locomotive power supply, the implementation mode is simple and reliable, the hardware of the whole locomotive is changed only by adding wiring, the software of the whole locomotive is kept unchanged, the cost input of the power supply of the motor locomotive in a ground warehouse can be canceled, other safety and other problems brought by the motor locomotive cable in the warehouse are avoided, and the technical defects of high-rate discharge, high voltage drop of the storage battery and the like and the problems of insufficient charging equipment input and the like are solved.
Drawings
Fig. 1 is a schematic view of a power supply device for a machine tool carriage.
Fig. 2 is a schematic diagram of a power supply device for locomotive movement according to an embodiment of the present application.
Fig. 3 is another schematic diagram of a power supply device for locomotive movement according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a power supply device for locomotive moving according to the second embodiment of the present application.
Detailed Description
In order to make the objects, technical means and advantages of the present application more apparent, the present application is further described in detail below with reference to the accompanying drawings.
The applicant finds that if the locomotive is directly inverted from a storage battery to provide an electric power supply, the lead-acid storage battery is adopted in the locomotive at present, so that the problems of incapability of carrying out high-rate discharge, high internal resistance of the storage battery and the like exist, when the storage battery is directly inverted into an alternating current power supply with three phases of about 60V, the starting current is very large, and the self-contained storage battery is instantly pulled down to a lower voltage, so that the storage battery is possibly damaged irreversibly. And the logic control software of the whole vehicle needs to be changed correspondingly, and the original three-phase 380V motor car is adjusted to be a three-phase 60V motor car. In addition, after the vehicle is moved once, the residual electric quantity of the storage battery cannot meet the requirement of the next lifting bow, and charging equipment is additionally added, so that a series of problems that the charging equipment has no external power supply and the like can be caused.
Aiming at the current state of the art of locomotive moving, the application provides a power supply device for locomotive moving.
Referring to fig. 1, fig. 1 is a schematic diagram of a power supply device for locomotive movement according to the present application. The power supply device is installed in the body of the moved locomotive, and comprises:
the storage battery is provided with a storage battery,
a converter for converting the output power of the storage battery into a DC power supply and inverting the DC power supply into an AC power supply for the body of the moved locomotive, or inverting the output power of the storage battery into a pulse width modulation power supply and adjusting the pulse width modulation power supply into the AC power supply,
wherein,
the DC power supply voltage is greater than the battery output power supply voltage.
It should be understood that locomotives in this application include, but are not limited to, electric traction locomotives that do not have self-propelled functions, locomotives without electric traction, and the like.
According to the power supply device, the storage battery output power supply in the locomotive is chopped into the direct-current power supply, the direct-current power supply is inverted into the alternating-current power supply for the moved locomotive, or the storage battery output power supply is inverted into the pulse width modulation power supply, and then the pulse width modulation power supply is boosted into the converter of the alternating-current power supply, so that the defect that the storage battery is instantaneously pulled down to lower voltage due to the fact that the starting current is large is avoided, and therefore the in-warehouse power supply or the attached shunting locomotive is not needed to be used as a power source for moving the vehicle.
The following description is specifically made in connection with the case of the power source required by the locomotive, and it should be understood that the embodiments of the present application are not limited to the specific parameters such as the voltage and the capacity of the power source in the following embodiments, and any locomotive model and power source voltage may be adaptively modulated and applied.
Examples
Referring to fig. 2, fig. 2 is a schematic diagram of a power supply device for locomotive movement according to an embodiment of the present application. The device comprises:
a storage battery for outputting a direct current power,
a first converter for chopping the battery output power into a DC power, the DC power voltage being greater than the DC power voltage output by the battery and equal to the DC power voltage for the locomotive being moved,
a second converter for inverting the DC power source output by the first converter into an AC power source,
a first connection interface for providing DC power supply for the moved locomotive,
a second connection interface for providing alternating current power supply for the moved locomotive,
a third connection interface for providing alternating current non-power supply,
wherein,
the output power supply of the storage battery is connected with the input end of the first converter through the first contactor, so that the first contactor can be used for switching on and off of a power circuit and isolating the load of the storage battery from the storage battery, thereby protecting the storage battery.
The output end of the first converter is connected with the input end of the second converter through the second contactor, so that the second contactor can be used for switching on and off of a power circuit, and can isolate the load of the first converter from the first converter, and the output end of the first converter is also connected with the input end of the first connection interface so as to provide the direct-current power supply output by the first converter for a locomotive motor.
The output end of the second converter is connected with the input end of the second connecting interface so as to provide the alternating current power supply output by the second converter for the locomotive motor.
The output end of the second converter is also connected with the input end of the second connecting interface so as to provide a non-power supply for the locomotive, for example, supply power for an air conditioner of a cab so as to meet the requirement of overhaul operation in a warehouse, ensure the comfort level of crews, and the isolated non-power supply can charge a mobile phone and a computer or be used as an emergency power supply.
As an example, the storage battery may be a lead-acid battery, or a lithium titanate battery, or a lithium battery, or a nickel-hydrogen battery, or a nickel-cadmium battery, preferably, a lithium titanate battery is selected, for example, the storage battery is a 42-48-string lithium titanate battery, and the capacity is 100 ah-510 ah. The direct current power supply voltage output by the storage battery is 110V; the battery includes a protection circuit for charge and discharge protection of the battery, for example, charge and discharge protection of the battery is realized through an under-voltage and over-voltage relay, or a Battery Management System (BMS), and also includes a battery voltage over-low protection, a battery voltage over-high protection, and a battery residual capacity under-protection.
As one example, the first contactor, the second contactor may employ a manual knife switch, a monopolar contactor, or the like.
As an example, the first converter is a chopper for chopper boosting the DC voltage output by the battery, and includes a multi-stage DC/DC boost circuit, such as a 2-stage DC/DC boost circuit, or a plurality of DC/DC boost circuits connected in series, such as 2 DC/DC series, and the first converter output voltage is a DC power supply voltage for the moved locomotive, such as 600V, which is beneficial for reducing electrical components and reducing complexity of the circuit; the first current transformer may further comprise a high frequency isolation circuit.
As one example, the ac power source is a three-phase ac power source, such as a three-phase 380V power source,
as an example, the second converter includes a multi-level inverter circuit, for example, a 2-level bridge inverter circuit, and further includes a filter circuit for suppressing voltage harmonics, where the filter circuit may use a combination of a filter inductance and a filter capacitance, or may use a high leakage inductance three-phase/four-wire transformer, a filter capacitance, or the like, so that the voltage harmonic content output by the second converter is lower than 5%, or use a capacitor of a locomotive auxiliary system itself.
As an example, the first converter, the second converter, the first contactor, the second contactor, the storage battery, at least one of a protection circuit and a filter circuit thereof are integrated in the storage battery cabinet, and the storage battery cabinet also comprises at least one of a direct-current power supply output overvoltage protection circuit and a contactor fault protection circuit.
As an example, the power supply device is installed in a locomotive without self-walking function, for example, the storage battery is an existing storage battery in the locomotive body, the power supply device is integrated in the existing storage battery, and the weight and the size of the adjusted storage battery cabinet are not higher than those of the original storage battery cabinet, so that the whole locomotive does not need to be changed, the capacity and the external dimension of the original storage battery are not changed, the software part of the whole locomotive also does not need to be changed, and the existing scheme is directly adopted, so that a third party is not involved.
Referring to fig. 3, fig. 3 is another schematic diagram of a power supply device for locomotive movement according to an embodiment of the present application. The device comprises:
a storage battery for outputting a direct current power,
a first converter for chopping the battery output power into a DC power, the DC power voltage being greater than the battery output DC power voltage, wherein the DC power voltage is greater than the battery output DC power voltage and is not equal to the DC power voltage for the moved locomotive,
a second converter for inverting the DC power supply output by the first converter into an AC power supply,
a third converter for chopping the output power of the storage battery into a direct-current power supply,
a first connection interface for providing DC power supply for the moved locomotive,
a second connection interface for providing alternating current power supply for the moved locomotive,
a third connection interface for providing alternating current non-power supply,
wherein,
the input ends of the first converter and the third converter are connected with an output direct current power supply of the storage battery through a first contactor,
the output end of the first converter is connected with the input end of the second converter, the output end of the second converter is connected with the input end of the second connecting interface and the input end of the third connecting interface,
the output end of the third converter is connected with the input end of the first connecting interface.
The following describes an example of a process of moving a locomotive by using the power supply device according to the first embodiment of the present application with reference to the power supply device in fig. 1.
When the locomotive needs to adopt the power supply voltage of DC600V for moving, the working mode of the locomotive is set as a moving mode, meanwhile, the power supply voltage is set as DC600V, after a battery management system or other modes receive the set power supply voltage command in a hard wire, communication and other modes, a first contactor in the graph 2 is immediately closed, the first converter boosts the chopper of the direct current power supply output by the storage battery to the power supply voltage, and a crewmember operates a traction handle in a cab under the condition that the whole locomotive does not need to make any other change, so that the moving is realized.
When the locomotive needs to adopt the power supply voltage to be 380V for moving, the working mode of the locomotive is set to be a moving mode, meanwhile, the power supply voltage is set to be 380V for moving, after a battery management system or other modes such as hard wires, communication and the like receive the set power supply voltage command, a first contactor and a second contactor in the graph 2 are closed immediately, the first converter carries out chopper boost on a direct current power supply output by a storage battery to DC600V, the second converter inverts and filters the DC600V to be a three-phase 380V alternating current power supply, and a power supply with the harmonic content lower than 5% is used for enabling a crewmember to operate a traction handle in a cab to realize moving in a garage. The output three-phase 380V power supply can also supply power for the air conditioner of the cab.
Examples
Referring to fig. 4, fig. 4 is a schematic diagram of a power supply device for locomotive moving according to a second embodiment of the present application. As one example, a power supply device is located in a locomotive body, the device comprising:
a storage battery for outputting a direct current power,
a fourth converter for inverting the output power of the storage battery to a pulse width modulation power,
a transformer for boosting the pulse width modulated power supply to an alternating current power supply voltage,
a rectifier for rectifying the transformer output power supply voltage into a DC power supply voltage,
a fourth connection interface for providing alternating current power supply for the moved locomotive,
a fifth connection interface for providing direct current power supply for the moved locomotive,
a sixth connection interface for providing an alternating current non-power source,
wherein,
the output power supply of the storage battery is connected with the input end of the fourth converter through the third contactor, so that the third contactor can be used for switching on and off of a power circuit and isolating the load of the storage battery from the storage battery, and the storage battery is protected.
The output end of the fourth converter is connected with the input end of the transformer,
the output end of the transformer is connected with the input end of the rectifier through the fourth contactor, so that the fourth contactor can be used for switching on and off a power circuit and can isolate the load of the transformer from the transformer.
The output end of the rectifier is connected with the input end of the fifth connecting interface so as to provide direct current power supply for the locomotive body,
the output end of the transformer is connected with the input end of the fourth connecting interface so as to provide alternating current power supply for the locomotive body,
the output end of the transformer is also connected with the input end of the sixth connecting interface so as to supply power to the air conditioner of the cab for providing alternating-current non-power supply, for example, so as to meet the requirement of overhaul operation in the garage, ensure the comfort level of crews, and the isolated non-power supply can charge mobile phones and computers or be used as an emergency power supply.
As an example, the storage battery may be a lead-acid battery, or a lithium titanate battery, or a lithium battery, or a nickel-hydrogen battery, or a nickel-cadmium battery, preferably, a lithium titanate battery is selected, for example, the storage battery is a 42-48-string lithium titanate battery, the capacity is 100 ah-510 ah, and the direct-current power supply voltage output by the storage battery is 110V; the battery includes a protection circuit for charge and discharge protection of the battery, for example, charge and discharge protection of the battery is realized through an under-voltage and over-voltage relay, or a Battery Management System (BMS), and also includes a battery voltage over-low protection, a battery voltage over-high protection, and a battery residual capacity under-protection.
As an example, the fourth converter inverts the dc voltage output by the battery into three phases of 50V to 97V, and the fourth converter may include a multi-level inverter circuit, for example, a 2-level bridge inverter circuit, and may further include a filter circuit for suppressing voltage harmonics, where the filter circuit may use a combination of a filter inductor and a filter capacitor, so that the voltage harmonic content output by the fourth converter is less than 5%, or use a capacitor filter capacitor of the auxiliary system of the locomotive.
As one example, the ac power source is a three-phase ac power source, such as a three-phase 380V power source.
As an example, the transformer is a three-phase transformer, for example, may be a high leakage three-phase-three-phase/four-wire transformer, and a three-phase filter capacitor is connected in parallel to the output end of the transformer, so that the inductance of the transformer and the three-phase filter capacitor connected in parallel make the harmonic content of the output voltage lower than 5%. The three-phase filter capacitor can be eliminated and the capacitor of the auxiliary system of the locomotive can be adopted. The transformer can also be a common three-phase-three-phase/four-wire transformer, and the output end of the transformer is connected with a three-phase filter inductor in series and a three-phase filter capacitor in parallel so that the harmonic content of output voltage is lower than 5 percent, and the three-phase filter capacitor can be eliminated to adopt the capacitor of the auxiliary system of the locomotive.
As an example, the rectifier may be a three-phase uncontrolled rectifier circuit, or a three-phase four-quadrant rectifier circuit may be used.
As an example, the fourth converter, the transformer, the rectifier, the third contactor, the fourth contactor, the storage battery, and at least one of the protection circuit and the filter circuit thereof are integrated inside the storage battery cabinet, and the storage battery cabinet also comprises at least one of the overvoltage protection circuit output by the direct-current power supply and the fault protection circuit output by the alternating-current power supply.
As an example, the power supply device is installed in a locomotive without self-walking function, for example, the storage battery is an existing storage battery in the locomotive body, the power supply device is integrated in the existing storage battery, and the weight and the size of the adjusted storage battery cabinet are not higher than those of the original storage battery cabinet, so that the whole locomotive does not need to be changed, the capacity and the external dimension of the original storage battery are not changed, the software part of the whole locomotive also does not need to be changed, and the existing scheme is directly adopted, so that a third party is not involved.
It should be understood that, in this embodiment, as a modification, the transformer may also output an ac power source having a voltage different from that of the ac power source, and the ac power source outputs a dc power source after being rectified by the rectifier.
The following illustrates a process of moving a locomotive by using the power supply device according to the second embodiment of the present application.
When the locomotive needs to be moved by 380V, the working mode of the locomotive is set to be an in-warehouse motor car mode, meanwhile, the power supply voltage is set to be 380V for moving, after a battery management system or other modes such as hard wire, communication and the like receive the set power supply voltage command, a third contactor in the graph 4 is immediately closed, a fourth converter inverts a direct current power supply output by a storage battery to output a three-phase 50V-three-phase 97V PWM power supply, the three-phase PWM power supply is boosted to be three-phase 380V through a boosting transformer, the PWM voltage is filtered to be a three-phase sine wave through a harmonic suppression circuit, the voltage harmonic content is less than 5%, and a crewmember operates a traction handle in a cab to realize moving.
After the three-phase 380V power supply output by the transformer passes through the harmonic suppression circuit, the power can be supplied to the cab air conditioner, the requirement of maintenance operation is met, the comfort level of crews is ensured, and the isolated power supply can charge mobile phones and computers and serve as an emergency power supply.
When the locomotive needs to adopt DC600V to move, the locomotive working mode is set as an in-warehouse motor car mode, meanwhile, the power supply voltage is set as DC600V to move, after a battery management system or other modes receive the set power supply voltage instructions in a hard wire, communication and other modes, a third contactor and a fourth contactor in the graph 4 are immediately closed, a fourth converter inverts a direct current power supply output by a storage battery to output a three-phase 50V-97V PWM power supply, the three-phase PWM power supply is boosted to three-phase 380V through a boosting transformer, the PWM voltage is filtered into three-phase sine waves through a harmonic suppression circuit, the voltage harmonic content is less than 5%, and the transformer outputs DC600V through a three-phase rectifier. The crewmember operates the traction handle in the cab to realize the in-garage vehicle.
The embodiment of the application can provide power supplies for locomotive moving for locomotives with different power supply modes, so that the ground construction of a large-power in-store mobile power supply is avoided, and the fund investment of ground power supply equipment is saved; because the power supply device is arranged in the locomotive body, a high-voltage cable is not required to be connected with a power supply in the warehouse, the secondary risks caused by the cable, such as triggering of electric leakage due to cable skin breaking, and the risks of cable breaking and the like caused by poor locomotive control are reduced, so that the investment of cable funds is saved, and the secondary disasters caused by the cable are avoided; the whole vehicle is not required to be largely transformed, and the existing operation mode is reserved; the problems of charging machine equipment investment and the like caused by the technical defects of high-rate discharge, high voltage drop of the storage battery and the like and insufficient residual electric quantity are solved.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the utility model.
Claims (10)
1. A power supply for a locomotive moving, the power supply being mounted in a body of the locomotive being moved, the power supply comprising:
the storage battery is provided with a storage battery,
a converter for converting the output power of the storage battery into a direct current power supply and then converting the direct current power supply into an alternating current power supply for the body of the moved locomotive, or converting the output power of the storage battery into a pulse width modulation power supply and then adjusting the pulse width modulation power supply into the alternating current power supply,
wherein,
the DC power supply voltage is greater than the battery output power supply voltage.
2. The power supply apparatus according to claim 1, wherein the current transformer includes: the system comprises a first converter for chopping an output power supply of a storage battery into a direct current power supply and a second converter for inverting the direct current power supply output by the first converter into an alternating current power supply, wherein the direct current power supply voltage is a direct current power supply voltage for a body of a moved locomotive, and the output end of the first converter is communicated with a first connecting interface for providing the direct current power supply for the body of the moved locomotive;
or,
the current transformer includes: the device comprises a third converter for chopping the output power of the storage battery into a direct current power supply, a first converter for chopping the output power of the storage battery into the direct current power supply, and a second converter for inverting the direct current power supply output by the first converter into an alternating current power supply, wherein the direct current power supply voltage inverted by the third converter is the direct current power supply voltage for the body of the moved locomotive, the input end of the third converter is communicated with the output power end of the storage battery through a first contactor for power on-off and load isolation, and the output end of the third converter is communicated with the first connecting interface;
the input end of the first converter is communicated with the output power end of the storage battery through the first contactor, the storage battery comprises a protection circuit for protecting the charge and discharge of the storage battery,
the storage battery is a lead-acid battery, a lithium titanate battery, a lithium battery, a nickel-hydrogen battery or a nickel-cadmium battery.
3. The power supply device according to claim 2, wherein the first converter is a chopper for chopper boosting the direct-current voltage output by the storage battery, and the output end of the first converter is communicated with the input end of the second converter through a second contactor for power on-off and load isolation;
the output end of the second converter is communicated with a second connecting interface for providing alternating current power supply for the body of the moved locomotive.
4. The power supply apparatus according to claim 3, wherein the chopper includes a multi-stage DC/DC boost circuit,
the alternating-current power supply is a three-phase alternating-current power supply,
the second converter comprises a multi-level bridge inverter circuit and a filter circuit for suppressing voltage harmonics,
the output end of the second converter is also communicated with a third connecting interface for providing alternating current non-power supply for the body of the moved locomotive;
the storage battery is an existing storage battery in the locomotive body, and the power supply device is integrated in the existing storage battery.
5. The power supply apparatus according to claim 1, wherein the current transformer includes: a fourth converter for inverting the battery output power to a pulse width modulated power, and a transformer for regulating the pulse width modulated power to an ac power supply voltage,
the input end of the fourth converter is communicated with the output power end of the storage battery through a third contactor for switching on and switching off the power supply and isolating the load,
the output end of the fourth converter is connected with the input end of the transformer,
the output end of the transformer is communicated with a fourth connecting interface for providing alternating current power supply for the body of the moved locomotive;
the storage battery comprises a protection circuit for storage battery charge and discharge protection;
the storage battery is a lead-acid battery, a lithium titanate battery, a lithium battery, a nickel-hydrogen battery or a nickel-cadmium battery.
6. The power supply apparatus according to claim 5, wherein the fourth converter includes a multi-level bridge inverter circuit, and a filter circuit for suppressing voltage harmonics,
the alternating-current power supply is a three-phase alternating-current power supply,
the current transformer further includes: a rectifier for rectifying an alternating current power supply into a direct current power supply,
the output end of the transformer is communicated with the input end of the rectifier through a fourth contactor for switching on and off of a power supply and load isolation,
the output end of the rectifier is communicated with a fifth connecting interface for providing direct-current power supply for the body of the moved locomotive.
7. The power supply device as claimed in claim 6, wherein the rectifier comprises a three-phase uncontrolled rectifier circuit or a three-phase four-quadrant rectifier circuit,
the output end of the transformer is also communicated with a sixth connecting interface for providing alternating current non-power supply for the body of the moved locomotive.
8. The power supply device according to claim 5, wherein the transformer is a high leakage inductance three-phase-three-phase/four-wire transformer,
the output end of the transformer is also connected with a filter circuit for suppressing voltage harmonics,
the storage battery is an existing storage battery in the locomotive body, and the power supply device is integrated in the existing storage battery.
9. The power supply device according to claim 4, 6 or 8, characterized in that the filter circuit is a three-phase filter inductor, and/or a three-phase filter capacitor.
10. A locomotive, characterized in that the locomotive is equipped with a power supply apparatus for locomotive movement as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321392042.5U CN220639528U (en) | 2023-06-02 | 2023-06-02 | Power supply device for locomotive moving |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321392042.5U CN220639528U (en) | 2023-06-02 | 2023-06-02 | Power supply device for locomotive moving |
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| Publication Number | Publication Date |
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| CN220639528U true CN220639528U (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321392042.5U Active CN220639528U (en) | 2023-06-02 | 2023-06-02 | Power supply device for locomotive moving |
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| CN (1) | CN220639528U (en) |
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