CN103138622B - Secondary power system and electric locomotive - Google Patents
Secondary power system and electric locomotive Download PDFInfo
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- CN103138622B CN103138622B CN201110377738.6A CN201110377738A CN103138622B CN 103138622 B CN103138622 B CN 103138622B CN 201110377738 A CN201110377738 A CN 201110377738A CN 103138622 B CN103138622 B CN 103138622B
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Abstract
The invention provides a kind of secondary power system and electric locomotive, this secondary power system comprises AuCT assembly and filter circuit assembly, wherein, AuCT assembly comprises interconnective Auxiliary Control Element and Auxiliary Power Unit, Auxiliary Control Element is used for producing according to set algorithm exporting to control Auxiliary Power Unit the pulse signal setting width to the control signal of Auxiliary Power Unit, filter circuit assembly comprises the transformer connected successively, electric capacity and electromagnetic interface filter, and Auxiliary Power Unit is connected with transformer, filter circuit assembly is used for the harmonic wave in filtering pulse signal.The exportable sine voltage signal of this power-supply system, thinks the voltage source that load provides stable, reduces the electromagnetic interference to around communication equipment and electronic equipment of harmonic wave in signal, reduces harmonic wave to the impact of load.
Description
Technical field
The present invention relates to power supply architecture technology, particularly relate to a kind of secondary power system and electric locomotive.
Background technology
In the electric power system of electric locomotive, comprise main power source system and secondary power system, main power source system is used for providing voltage source to the pulling equipment in electric locomotive, secondary power system is used for providing voltage source to the auxiliary equipment in electric locomotive, and auxiliary equipment is often referred to the various blower fans, oil pump, air compressor, air-conditioning etc. that are arranged in electric locomotive.
Owing to mainly comprising inverter circuit in secondary power system, and harmonic wave can be produced in the AC power waveform that inverter circuit exports, this harmonic wave can produce severe jamming to the communication equipment in electric locomotive and electronic equipment, further, when the power supply that this secondary power system exports being supplied to the motor in locomotive, harmonic voltage and electric current can increase iron loss and the copper loss of motor, motor temperature is made to increase, decrease in efficiency, and produce noise, even cause motor damage.Therefore, be necessary to filter the harmonic wave in the AC power waveform of inverter circuit output.
Summary of the invention
First aspect of the present invention is to provide a kind of secondary power system, with the harmonic wave in the inverter circuit of filtering secondary power system.
This secondary power system, comprising:
AuCT assembly, comprises interconnective Auxiliary Control Element and Auxiliary Power Unit, wherein,
Auxiliary Control Element is used for producing according to set algorithm exporting to control described Auxiliary Power Unit the pulse signal setting width to the control signal of Auxiliary Power Unit;
Filter circuit assembly, comprise the transformer, electric capacity and the electromagnetic interface filter that connect successively, and described Auxiliary Power Unit is connected with described transformer, described Capacitance parallel connection in the output of described transformer, for the harmonic wave in pulse signal described in filtering.
Another aspect of the present invention is to provide a kind of electric locomotive, with the harmonic wave in the inverter circuit of secondary power system in filtering electric locomotive.
This electric locomotive, comprise railcar body, DC power supply and auxiliary equipment, also comprise secondary power system provided by the invention, described secondary power system is arranged on railcar body inside, Auxiliary Power Unit in described secondary power system is connected with DC power supply, and described secondary power system is used for providing voltage source to auxiliary equipment.
Secondary power system provided by the invention, the control signal of preset algorithm output to Auxiliary Power Unit is adopted by Auxiliary Control Element, thus the DC signal received is changing into pulse signal by Auxiliary Power Unit, and while by transformer and electric capacity, the amplitude to this pulse signal converts, convert pulse signal to sine wave signal, and the low-order harmonic in Absorbable rod pulse signal, eliminate pulsation, and further absorb the high order harmonic component in sine wave signal by electromagnetic interface filter, therefore, finally obtain high-quality sine voltage signal, think the voltage source that load provides stable, reduce the electromagnetic interference to around communication equipment and electronic equipment of harmonic wave in signal, reduce harmonic wave to the impact of load.
Further, this secondary power system adopts modularized design mode, whole power-supply system is divided into two large assemblies, can divides function between each assembly clearly, be conducive to production and assembly and on-site maintenance.
This secondary power system is particularly useful in electric locomotive, as the secondary power system of electric locomotive, by the various auxiliary equipment that this system is on locomotive, such as, blower fan, oil pump, air compressor, air-conditioning etc. provide stable single-phase or three-phase voltage source, for the normal operation of auxiliary equipment provides safeguard.
Accompanying drawing explanation
The structural representation of the secondary power system that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the secondary power system that Fig. 2 provides for another embodiment of the present invention.
Embodiment
The secondary power system that Fig. 1 provides for the embodiment of the present invention, this secondary power system comprises AuCT assembly 10 and filter circuit assembly 11.
AuCT assembly 10 comprises interconnective Auxiliary Control Element 101 and Auxiliary Power Unit 102, wherein,
Auxiliary Control Element 101 exports to control Auxiliary Power Unit 102 pulse signal setting width to the control signal of Auxiliary Power Unit 102 for producing according to set algorithm.
Filter circuit assembly 11 comprises the transformer 111, electric capacity 112 and the electromagnetic interface filter 113 that connect successively, and Auxiliary Power Unit 102 is connected 111 with transformer, electric capacity 112 is parallel to the output of transformer 111, and filter circuit assembly 11 is for the harmonic wave in filtering pulse signal.
Auxiliary Power Unit is used for DC signal to be changing into ac signal, mainly inverter is comprised in auxiliary power power supply in the present embodiment, inverter circuit is for there being multiple insulated gate bipolar transistor (InsulatedGateBipolarTransistor, be called for short, IGBT) form, DC signal can be converted to the pulse signal of interchange.
Auxiliary Control Element is the control device of this secondary power system, the processor of computer or other types can be adopted to realize, corresponding algorithm routine is provided with in this Auxiliary Control Element, produce each IGBT conducting in inverter in Auxiliary Power Unit or the voltage of shutoff or the timing control signal of electric current by this algorithm routine, changed the duty ratio of the pulse signal exported by inverter by the conducting of each IGBT in this control signal control inverter or turn-off time, thus control inverter exports the pulse signal of setting width.
Can select as required for preset algorithm, such as, can be SPWM algorithm, space voltage vector control PWM algorithm, and also claim SVPWM algorithm, voltage and frequency square are than ralation method etc.
Transformer can adopt various forms of transformer, setting multiple is the turn ratio of primary winding and secondary coil in transformer, the adjustment of pulse signals amplitude can be realized by the turn ratio of primary winding and secondary coil in adjustment transformer, by the range-adjusting of this pulse signal to required numerical value, and, due to, electric capacity is connected with after this transformer, and perceptual assembly given by transformer, electric capacity is capacitive components, namely Capacitance parallel connection is formed a LC filter circuit in the output of transformer, this LC filter circuit can filter by the harmonic wave in pulse signals, and, sine wave is become through this LC filter circuit afterpulse signal.
Electromagnetic interface filter is generally the low-pass filter circuit be made up of series reactor and shunt capacitor, and its effect is the frequency signal access arrangement of permission equipment when normally working, and has larger inhibition to the interference signal of high frequency.
By the high order harmonic component filtering in the sine wave that exports after transformer and electric capacity, and then high-quality sine voltage signal can be obtained by electromagnetic interface filter.
As shown from the above technical solution, this secondary power system, the control signal of preset algorithm output to Auxiliary Power Unit is adopted by Auxiliary Control Element, thus the DC signal received is changing into pulse signal by Auxiliary Power Unit, and while by transformer and electric capacity, the amplitude to this pulse signal converts, convert pulse signal to sine wave signal, and the low-order harmonic in Absorbable rod pulse signal, eliminate pulsation, and further absorb the high order harmonic component in sine wave signal by electromagnetic interface filter, therefore, finally obtain high-quality sine voltage signal, think the voltage source that load provides stable, reduce the electromagnetic interference to around communication equipment and electronic equipment of harmonic wave in signal, reduce harmonic wave to the impact of load.
Further, this secondary power system adopts modularized design mode, whole power-supply system is divided into two large assemblies, can divides function between each assembly clearly, be conducive to production and assembly and on-site maintenance.
This secondary power system is particularly useful in electric locomotive, as the secondary power system of electric locomotive, by the various auxiliary equipment that this system is on locomotive, such as, blower fan, oil pump, air compressor, air-conditioning etc. provide stable single-phase or three-phase voltage source, for the normal operation of auxiliary equipment provides safeguard.
The structural representation of the secondary power system that Fig. 2 provides for another embodiment of the present invention, as shown in Figure 2, on the basis of above-described embodiment, further, AuCT assembly 10 in this secondary power system is arranged in AuCT room 1, filter circuit assembly is arranged in auxiliary filter cabinet 2, and is provided with cooling blower 114 in auxiliary filter cabinet 2.
In the present embodiment, AuCT assembly and filter circuit assembly are arranged respectively, adopt Split type structure, the electromagnetic interference between the above-mentioned different electric component of function, between this electric component and external electrical assembly can be reduced, and, facilitate the installation of this power-supply system, especially can be arranged on electric locomotive inside easily, be convenient to the on-site maintenance to secondary power system.
And, in auxiliary filter cabinet, cooling blower is set, distributed the heat produced in transformer in auxiliary filter cabinet, electric capacity and the electromagnetic interface filter course of work by cooling blower, prevent the said equipment from affecting each equipment because long-term work causes filtering in-cabinet temperature too high and normally work.
Above-mentioned filter circuit assembly can for a set of, two cover or overlap more, can arrange as required, in the present embodiment preferably, filter circuit assembly is two covers, transformer in every grip assembly is connected with Auxiliary Power Unit respectively, by often overlapping the harmonic wave in the pulse signal of filter circuit assembly filtering AuCT assembly output, the auxiliary equipment load that often cover filter circuit assembly is respectively different provides voltage source, and, can using wherein a set of as subsequent use, when wherein a set of infringement, another set of work can be adopted.
Above-mentioned transformer preferably adopts the three-phase transformer of integrated high leakage inductance; the three-phase transformer of this integrated high leakage inductance can be used for AuCT assembly and auxiliary equipment load to isolate; when auxiliary equipment load short circuit; the impact of the short-circuit current rush that each IGBT in Auxiliary Power Unit in inverter can be protected to be subject to, protects Auxiliary Power Unit.
Further, as shown in Figure 2, be connected by binding post 1001 between Auxiliary Power Unit 102 with transformer 111; All be connected by copper bar assembly 1002 between transformer 111 and electric capacity 112, between electric capacity 112 and electromagnetic interface filter 113.
In the present embodiment, by binding post, the output circuit of Auxiliary Power Unit is connected with the input circuit of transformer, by copper bar assembly by the output circuit of transformer and electric capacity, be all connected by copper bar assembly between electric capacity and the incoming line of electromagnetic interface filter, the connection between circuit can be facilitated, so that install and maintenance.
Further, as shown in Figure 2, casing in AuCT room 1 is fixed with the first support 103 and the second support 104, second support 104 is positioned at the below of the first support 103, wherein, Auxiliary Control Element 101 is fixed on the guide rail of the first support 103 by the first bolt tight (for illustrating in figure); Auxiliary Power Unit 102 is anchored on the second support 104 by the second bolt (for illustrating in figure); Auxiliary Control Element 101 and Auxiliary Power Unit 102 be provided with the water power connecting plate (not shown) of carrying out water cooling exchange with outside below.
And, auxiliary filter cabinet 2 comprises transformer room 21, filtering room 22 and fan house 23, wherein, the framework of transformer room 21 installs two transformers 111, the framework of filtering room 22 is provided with two electromagnetic interface filters, 113, two electric capacity 112 and bronze medal assembly 1002, the framework of fan house 23 is provided with a cooling blower 114.
Adopt above-mentioned vibrational power flow, each assembly in this secondary power system and each unit in assembly and equipment are installed in AuCT room and auxiliary filter cabinet, the setting of Split type structure is adopted to match, with the installation of convenient said modules with by two large assemblies in this power-supply system.
On the basis of above-described embodiment; further; also current sensor is comprised in this secondary power system; this current sensor is connected with the output of electromagnetic interface filter, for gathering the output current of electromagnetic interface filter and sending Auxiliary Control Element to for Auxiliary Control Element according to the protecting control signal of output current generation to load.
In the present embodiment, by arranging current sensor to detect the output current of electromagnetic interface filter, when there is short circuit or other faults in auxiliary equipment load, output current there will be exception, such as, this output current may be greater than the current value under normal condition, Auxiliary Control Element can judge this output current received, when there is this kind of situation, the exportable protecting control signal of Auxiliary Control Element, this protecting control signal can control the protection switch disconnecting auxiliary equipment load, load is quit work, to protect load, and then the protective effect also played this secondary power system.
Certainly; this protecting control signal also can be other forms of control signal; be not limited to the mode that the present embodiment provides; such as; also the connection line be arranged between this electromagnetic interface filter and auxiliary equipment load is disconnected by this signal controlling; no longer by this power-supply system for auxiliary equipment load provides voltage source, thus play the object that load carries out protecting.
The embodiment of the present invention additionally provides a kind of electric locomotive, comprise railcar body, DC power supply and auxiliary equipment, also comprise the secondary power system that the claim embodiment of the present invention provides, secondary power system is arranged on railcar body inside, Auxiliary Power Unit in secondary power system is connected with DC power supply, and secondary power system is used for providing voltage source to auxiliary equipment.
Electric locomotive in the present embodiment, the secondary power system embodiment of the present invention provided is as the secondary power system of electric locomotive, this secondary power system can convert the DC power supply in locomotive to AC power, think the various auxiliary equipment on locomotive, such as, blower fan, oil pump, air compressor, air-conditioning etc. provide stable single-phase or three-phase voltage source, reduce the electromagnetic interference to around communication equipment and electronic equipment of harmonic wave in voltage source, reduce harmonic wave to the impact of load, for the normal operation of auxiliary equipment provides safeguard.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a secondary power system, is characterized in that, comprising:
AuCT assembly, comprises interconnective Auxiliary Control Element and Auxiliary Power Unit, wherein,
Auxiliary Control Element is used for producing according to preset algorithm exporting to control described Auxiliary Power Unit the pulse signal setting width to the control signal of Auxiliary Power Unit;
Filter circuit assembly, comprise the transformer, electric capacity and the electromagnetic interface filter that connect successively, and described Auxiliary Power Unit is connected with described transformer, described Capacitance parallel connection in the output of described transformer, for the harmonic wave in pulse signal described in filtering;
Described AuCT assembly is arranged on AuCT indoor, and described filter circuit assembly is arranged in auxiliary filter cabinet, and is provided with cooling blower in described auxiliary filter cabinet;
Be connected by binding post between described Auxiliary Power Unit with described transformer;
All be connected by copper bar assembly between described transformer and electric capacity, between described electric capacity and electromagnetic interface filter;
The casing of described AuCT indoor is fixed with the first support and the second support, and described second support is positioned at the below of described first support, wherein,
Described Auxiliary Control Element passes through the first bolted on the guide rail of described first support;
Described Auxiliary Power Unit passes through the second bolted on described second support;
Described Auxiliary Control Element and Auxiliary Power Unit be provided with the water power connecting plate carrying out water cooling exchange with outside below;
Described auxiliary filter cabinet comprises transformer room, filtering room and fan house, wherein,
The framework of described transformer room installs two transformers, the framework of described filtering room is provided with two electromagnetic interface filters, two electric capacity and bronze medal assembly, the framework of described fan house is provided with a cooling blower.
2. secondary power system according to claim 1, is characterized in that: described filter circuit assembly is two covers, and the described transformer in every grip assembly is connected with described Auxiliary Power Unit respectively.
3. secondary power system according to claim 1, is characterized in that, also comprises:
Current sensor, is connected with the output of described electromagnetic interface filter, for gathering the output current of electromagnetic interface filter and sending described Auxiliary Control Element to for described Auxiliary Control Element according to the protecting control signal of described output current generation to load.
4. an electric locomotive, comprises railcar body, DC power supply and auxiliary equipment, it is characterized in that:
Also comprise the arbitrary described secondary power system of claim 1-3, described secondary power system is arranged on railcar body inside, Auxiliary Power Unit in described secondary power system is connected with DC power supply, and described secondary power system is used for providing voltage source to auxiliary equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110377738.6A CN103138622B (en) | 2011-11-22 | 2011-11-24 | Secondary power system and electric locomotive |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110374025 | 2011-11-22 | ||
| CN201110374025.4 | 2011-11-22 | ||
| CN201110377738.6A CN103138622B (en) | 2011-11-22 | 2011-11-24 | Secondary power system and electric locomotive |
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| CN103138622A CN103138622A (en) | 2013-06-05 |
| CN103138622B true CN103138622B (en) | 2015-11-25 |
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| CN201110377738.6A Active CN103138622B (en) | 2011-11-22 | 2011-11-24 | Secondary power system and electric locomotive |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103840465B (en) * | 2014-02-26 | 2018-01-09 | 南车株洲电力机车研究所有限公司 | A kind of locomotive harmonic treating apparatus and system |
| CN104811022A (en) * | 2015-05-11 | 2015-07-29 | 永济新时速电机电器有限责任公司 | Auxiliary converter and vehicle |
| CN105099148A (en) * | 2015-07-31 | 2015-11-25 | 中国北车集团大同电力机车有限责任公司 | Filtering cabinet at output end of auxiliary current transformer of electric locomotive |
| CN106452246A (en) * | 2016-12-02 | 2017-02-22 | 苏州韦德韦诺电气科技有限公司 | Vector voltage loop control system for industrial production and encryption method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1014132A (en) * | 1996-06-27 | 1998-01-16 | Sansha Electric Mfg Co Ltd | Uninterruptible power supply |
| JP4391339B2 (en) * | 2004-06-30 | 2009-12-24 | 三菱電機株式会社 | Auxiliary power supply for vehicle |
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- 2011-11-24 CN CN201110377738.6A patent/CN103138622B/en active Active
Non-Patent Citations (1)
| Title |
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| 一种集成式辅助电源模式的介绍;刘宏等;《电力机车与城轨车辆》;20071120;第30卷(第6期);第46-48页 * |
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Address after: 044502 Yongji City, Shanxi Province, the city of motor street, No. 18, No. Patentee after: CRRC YONGJI ELECTRIC CO., LTD. Address before: 044502 Shanxi city of Yuncheng province Yongji City Motor Street No. 18 Patentee before: Yongji Xinshisu Motor Electrical Appliance Co., Ltd. |
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