AU2017391576B2 - Maglev linear motor supply circuit and method - Google Patents
Maglev linear motor supply circuit and method Download PDFInfo
- Publication number
- AU2017391576B2 AU2017391576B2 AU2017391576A AU2017391576A AU2017391576B2 AU 2017391576 B2 AU2017391576 B2 AU 2017391576B2 AU 2017391576 A AU2017391576 A AU 2017391576A AU 2017391576 A AU2017391576 A AU 2017391576A AU 2017391576 B2 AU2017391576 B2 AU 2017391576B2
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- Australia
- Prior art keywords
- series
- train
- parallel connection
- linear motors
- linear motor
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000725 suspension Substances 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 230000001133 acceleration Effects 0.000 claims description 8
- 238000005339 levitation Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 230000007717 exclusion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000004557 technical material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/10—Combination of electric propulsion and magnetic suspension or levitation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Multiple Motors (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A maglev train linear motor power supply circuit. Two sides of each levitation chassis are provided with linear motors. The linear motors on the same sides of levitation chassises on the same train section are connected to each other in series. The linear motors connected in series are divided into series units equal in amount. Series-parallel switch devices are disposed between the series units to achieve series-parallel switching of the series units. Also disclosed a power supply method for the maglev train linear motor power supply circuit. When a train starts to accelerate, the series-parallel switch devices are in a series position, and the series units operate in a series manner; when the train accelerates to a set speed, the series-parallel switch devices are in a parallel position, and the series units operate in parallel manner. The power supply circuit and the power supply method ensure both high-current tractive capacity for a train starting to accelerate and the requirement on high voltage of the linear motors when the train is in high-speed operation, and reduces the temperature rise of the linear motors.
Description
Maglev Linear Motor Supply Circuit and Method
Technical Field
The invention relates to the technical field of Maglev, in particular to a Maglev linear 5 motor supply circuit and method.
Background Art
Medium and low speed Maglev is generally based on DC 1500V power supply mode, multiple linear motors are connected to the traction inverter in series and parallel connection 0 modes, and the DC 1500V power supply is supplied to the linear motors to drive the train after converted into AC through the traction inverter. In the prior art, a single car is adopted as the control target in the traction scheme of the medium and low speed Maglev, i.e. each car is provided with a plurality of suspension frames, a linear motor is arranged on the two sides of each suspension frame respectively, and the linear motors on the same side of each suspension 5 frame are connected in series to the traction inverter. In the technical scheme, the single linear motor end is low in voltage and limited in traction capability; in the constant power area, the linear motors are high in current, leading to high temperature rise and shortening of service life. In order to acquire higher starting acceleration and running speed, the traction inverter with higher redundant capacity should be configured, and high-current and high-voltage /0 resistance power devices are selected, leading to high traction system cost. In order to solve this problem, a Chinese Patent with the Application No. 201110079656.3 provides a scheme that an additional output transformer and a switch device thereof are arranged between the traction inverter and the linear motors. When the train reaches the certain speed and the inverter output voltage reaches the upper limit, a traction control system on the train controls 25 the traction inverter output current to zero, then the output transformer is connected into the circuit by switching the switch device, the traction inverter recovers output, and the voltage is fed to the linear motors after boosted by the output transformer. Although the additional output transformer scheme complies with the requirement for high voltage of the linear motors under high speed operation to some extent, the scheme is complex in structure and 30 high in cost.
2017391576 06 Feb 2020
Contents of the Invention
The invention provides a Maglev linear motor supply circuit and method which meet the requirement of the linear motors for low speed high current and high speed high voltage without increase of the capacity of the traction inverter.
The technical scheme adopted by the invention is that a Maglev linear motor supply circuit is composed of a DC power supply, an input switch device, a traction inverter and linear motors. A linear motor is arranged on two sides of each suspension frame respectively, and the linear motors on the same sides of the suspension frames on the same car are connected in series. The circuit is characterized in that the linear motors connected in series 0 are divided into groups equal in number, and a series and parallel connection conversion switch device is arranged between the groups to achieve series and parallel connection conversion between the groups.
In order to better achieve the purpose of the invention, the voltage between the groups is balanced by connecting electric reactors in series if the number of motors in the groups is 5 different.
In order to better achieve the purpose of the invention, the circuit can be connected in series with the linear motors on the suspension frames of an adjacent car through jumpers.
A supply method of the Maglev linear motor supply circuit is characterized by including the following steps:
A. When a train starts acceleration, the series and parallel connection conversion switch device is at the series connection position, and the groups run in a series connection mode;
B. When the train accelerates to a set speed, the series and parallel connection conversion switch device is at the parallel connection position, and the groups run in a parallel connection mode.
Another technical scheme adopted by the invention is that a Maglev linear motor supply circuit is composed of a DC power supply, an input switch device, a traction inverter and linear motors, a linear motor is arranged on each of two sides of each suspension frame respectively, and the linear motors on the same side of the suspension frames on the same car are connected in series, the circuit is characterized in that the linear motors connected in series 30 on each side are divided into groups, and the number of groups on one side is equal to the number of groups on the other side, and a series and parallel connection conversion switch device is arranged between one group and next group on each side to achieve series and parallel connection conversion between the one group and the next group on each side, characterized in that voltage between the one group and the next group on each side is
2017391576 06 Feb 2020 balanced by connecting electric reactors in series if the number of motors in the one group is different from that in the next group.
Preferably, the Maglev linear motor supply circuit according to claim 1, characterized in that the circuit can be connected in series with the linear motors on suspension frames of an 5 adjacent car through jumpers.
Another technical scheme adopted by the invention is a supply method of the above-mentioned Maglev linear motor supply circuit, characterized in including the following steps: A. when a train starts acceleration, the series and parallel connection conversion switch device is at a series connection position, and the groups run in a series connection mode; B. 0 when the train accelerates to a set speed, the series and parallel connection conversion switch device is at a parallel connection position, and the groups run in a parallel connection mode.
The invention has the advantages of ensuring both high current traction capability when the train starts for acceleration and high end voltage requirements of the linear motors when the train runs at high speed without changing the power supply mode and the single traction 5 inverter capacity, and reducing temperature rise of the linear motors.
Description of Figures
Figure 1 is a Maglev linear motor supply circuit diagram of the embodiment I of the invention.
Figure 2 is a Maglev linear motor supply circuit diagram of the embodiment II of the 0 invention.
Figure 3 is a Maglev linear motor supply circuit diagram of the embodiment III of the invention.
Specific embodiments
Further description of the invention is provided by combining the figures.
Embodiment I
As per Figure 1, the Maglev linear motor supply circuit of the embodiment is characterized in that four suspension frames are arranged on one car, a linear motor is arranged on each of two sides of each suspension frame respectively, and the linear motors on the same sides of the suspension frames are connected in series. The linear motors connected 30 in series are divided into the groups with two motors in each unit, and the series and parallel connection conversion switch device is arranged between the series connection units. When the train starts for acceleration, the series and parallel connection conversion switch device is at the series connection position, and the groups run in a four motor series connection mode;
2017391576 06 Feb 2020 when the train accelerates to a set speed, the series and parallel connection conversion switch device is at the parallel connection position, and the groups run in a parallel connection mode with two motors in reach unit.
Embodiment II
As per Figure 2, the Maglev linear motor supply circuit of the embodiment is characterized in that five suspension frames are arranged on one car, a linear motor is arranged on each of two sides of each suspension frame respectively, and the linear motors on the same sides of the suspension frames are connected in series. The linear motors connected in series are divided into two groups: three motors are connected in series in one unit, and two 0 motors are connected in series in another unit. The series and parallel connection conversion switch device is arranged between the groups. When the train starts for acceleration, the series and parallel connection conversion switch device is at the series connection position, and the groups run in a five motor series connection mode; when the train accelerates to a set speed, the series and parallel connection conversion switch device is at the parallel connection 5 position, the electric reactor is connected in series into the group of the two motors, and the two groups run in a parallel connection mode.
Embodiment III
As per Figure 3, the Maglev linear motor supply circuit of the embodiment is characterized in that five suspension frames are arranged on one car, a linear motor is 0 arranged on each of two sides of each suspension frame respectively, and the linear motors on the same sides of the suspension frames are connected in series. The linear motors connected in series are divided into two groups: three motors are connected in series in one unit, and the two motors in another unit are connected in series with a linear motor on the suspension frame of the adjacent car through the jumper. The series and parallel connection conversion switch 25 device is arranged between the groups. When the train starts for acceleration, the series and parallel connection conversion switch device is at the series connection position, and the groups run in a six motor series connection mode; when the train accelerates to a set speed, the series and parallel connection conversion switch device is at the parallel connection position, and the groups run in a parallel connection mode with three motors in reach unit.
A detailed description of one or more preferred embodiments of the invention is provided above along with accompanying figures that illustrate by way of example the principles of the invention. While the invention is described in connection with such embodiments, it should be understood that the invention is not limited to any embodiment. On
2017391576 06 Feb 2020 the contrary, the scope of the invention is limited only by the appended claims and the invention encompasses numerous alternatives, modifications, and equivalents. For the purpose of example, numerous specific details are set forth in the description above in order to provide a thorough understanding of the present invention. The present invention may be practised according to the claims without some or all of these specific details. For the purpose of clarity, technical material that is known in the technical fields related to the invention has not been described in detail so that the present invention is not unnecessarily obscured.
Throughout this specification and the claims that follow unless the context requires otherwise, the words 'comprise' and 'include' and variations such as 'comprising' and 0 'including' will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.
The reference to any prior art in this specification is not, and should not be taken as, an acknowledgment or any form of suggestion that such prior art forms part of the common general knowledge of the technical field.
Claims (3)
- Claims1. A Maglev linear motor supply circuit is composed of a DC power supply, an input switch device, a traction inverter and linear motors, a linear motor is arranged on each of two sides of each suspension frame respectively, and the linear motors on the same side of the5 suspension frames on the same car are connected in series, the circuit is characterized in that the linear motors connected in series on each side are divided into groups, and the number of groups on one side is equal to the number of groups on the other side, and a series and parallel connection conversion switch device is arranged between one group and next group on each side to achieve series and parallel connection conversion between the one group and the next 0 group on each side, characterized in that voltage between the one group and the next group on each side is balanced by connecting electric reactors in series if the number of motors in the one group is different from that in the next group.
- 2. The Maglev linear motor supply circuit according to claim 1, characterized in that the 5 circuit can be connected in series with the linear motors on suspension frames of an adjacent car through jumpers.
- 3. A supply method of the Maglev linear motor supply circuit according to claim 1, characterized in including the following steps:A. when a train starts acceleration, the series and parallel connection conversion switch 0 device is at a series connection position, and the groups run in a series connection mode;B. when the train accelerates to a set speed, the series and parallel connection conversion switch device is at a parallel connection position, and the groups run in a parallel connection mode.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000640.6A CN106740258A (en) | 2017-01-03 | 2017-01-03 | Magnetic-levitation train linear electric motors power supply circuit and method |
| CN2017100006406 | 2017-01-03 | ||
| PCT/CN2017/113541 WO2018126821A1 (en) | 2017-01-03 | 2017-11-29 | Maglev train linear motor power supply circuit and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2017391576A1 AU2017391576A1 (en) | 2018-08-09 |
| AU2017391576B2 true AU2017391576B2 (en) | 2020-02-27 |
Family
ID=58952845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2017391576A Active AU2017391576B2 (en) | 2017-01-03 | 2017-11-29 | Maglev linear motor supply circuit and method |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN106740258A (en) |
| AU (1) | AU2017391576B2 (en) |
| WO (1) | WO2018126821A1 (en) |
| ZA (1) | ZA201805836B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740258A (en) * | 2017-01-03 | 2017-05-31 | 中车大连机车车辆有限公司 | Magnetic-levitation train linear electric motors power supply circuit and method |
| CN108859858B (en) * | 2018-03-23 | 2020-02-21 | 西南交通大学 | Medium-speed magnetic levitation traction framework system |
| CN108638913B (en) * | 2018-07-04 | 2020-01-21 | 西南交通大学 | Power configuration method for medium-speed magnetic levitation traction system |
| CN109784530B (en) * | 2018-12-10 | 2021-02-19 | 北京交通大学 | Power supply partition optimization setting method based on medium-speed magnetic suspension line passing capacity |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104118333A (en) * | 2014-07-23 | 2014-10-29 | 中国人民解放军国防科学技术大学 | Linear induction motor traction force increasing method for magnetic-levitation train |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224537C (en) * | 2003-06-12 | 2005-10-26 | 国家磁浮交通工程技术研究中心 | Power module power supplying mthod for high-speed magnetic suspension train |
| CN1571082A (en) * | 2003-07-24 | 2005-01-26 | 新疆特变电工股份有限公司 | Double-voltage transformer |
| US20100127579A1 (en) * | 2004-08-20 | 2010-05-27 | Dumitru Bojiuc | Magnetically levitated transport system |
| CN100581046C (en) * | 2004-10-01 | 2010-01-13 | 株式会社安川电机 | Linear motor system |
| DE102004054919A1 (en) * | 2004-11-10 | 2006-05-11 | Transrapid International Gmbh & Co. Kg | Method and device for operating a magnetic levitation vehicle |
| DE102006017933B4 (en) * | 2006-04-18 | 2008-01-24 | Siemens Ag | Electric machine with magnetic bearing and backup bearing |
| CN202389369U (en) * | 2012-01-13 | 2012-08-22 | 南车株洲电力机车有限公司 | Centralized power supply structure for traction system of middle-low-speed magnetically levitated train |
| CN106740258A (en) * | 2017-01-03 | 2017-05-31 | 中车大连机车车辆有限公司 | Magnetic-levitation train linear electric motors power supply circuit and method |
-
2017
- 2017-01-03 CN CN201710000640.6A patent/CN106740258A/en active Pending
- 2017-11-29 WO PCT/CN2017/113541 patent/WO2018126821A1/en active Application Filing
- 2017-11-29 AU AU2017391576A patent/AU2017391576B2/en active Active
-
2018
- 2018-08-30 ZA ZA2018/05836A patent/ZA201805836B/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104118333A (en) * | 2014-07-23 | 2014-10-29 | 中国人民解放军国防科学技术大学 | Linear induction motor traction force increasing method for magnetic-levitation train |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2017391576A1 (en) | 2018-08-09 |
| CN106740258A (en) | 2017-05-31 |
| ZA201805836B (en) | 2019-06-26 |
| WO2018126821A1 (en) | 2018-07-12 |
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| Date | Code | Title | Description |
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| DA3 | Amendments made section 104 |
Free format text: THE NATURE OF THE AMENDMENT IS: AMEND THE INVENTION TITLE TO READ MAGLEV LINEAR MOTOR SUPPLY CIRCUIT AND METHOD |
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| FGA | Letters patent sealed or granted (standard patent) |