CN113479069A - Bilateral series power supply system and method for high-speed magnetic levitation traffic - Google Patents
Bilateral series power supply system and method for high-speed magnetic levitation traffic Download PDFInfo
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- CN113479069A CN113479069A CN202110853983.3A CN202110853983A CN113479069A CN 113479069 A CN113479069 A CN 113479069A CN 202110853983 A CN202110853983 A CN 202110853983A CN 113479069 A CN113479069 A CN 113479069A
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- long stator
- power supply
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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
- B60L13/03—Electric propulsion by linear motors
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- Physics & Mathematics (AREA)
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- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Abstract
The invention discloses a bilateral series power supply system and a bilateral series power supply method for high-speed magnetic suspension traffic, wherein the system comprises two substations at two ends of a line, a feed cable, a long stator winding of a linear motor and a plurality of trackside switches; the long stator winding of the linear motor is divided into a plurality of long stator sections, and the long stator sections are arranged on two sides of the track in a staggered mode; the power supply method comprises the following steps: the converter regulates the amplitude, frequency and phase of the output voltage and current in real time, and supplies power to the long stator section where the high-speed maglev train is located in a subsection mode through the feed cable and the trackside switch, and each long stator section can only have one train of maglev train at the same time. The invention removes the limitation of the output voltage of the converter, and can double the phase voltage of the motor by slightly improving the traditional parallel power supply scheme of the converter.
Description
Technical Field
The invention belongs to the technical field of magnetic suspension trains, and particularly relates to a bilateral series power supply system and method for high-speed magnetic suspension traffic.
Background
The maglev train is a novel non-contact ground rail transportation vehicle, and runs in a suspension mode with a suspension gap of 8-12mm, wheels in a traditional vehicle are omitted, and non-adhesion traction non-contact running is achieved. The method has the advantages of low noise, wide speed range, high acceleration and deceleration speed, low maintenance cost and the like, thereby having wide application prospect.
The traction power supply system mainly comprises a power supply part, a current transformation part, a feed cable, a trackside switch, a linear motor long stator winding and the like. The traction power supply system provides power required by running for the maglev train, and the traction power supply technology is another key technology in the high-speed maglev transportation technology.
The traditional high-speed maglev train power supply system needs 3 converters on an uplink line and a downlink line respectively, the converters at two ends of the line are connected in parallel to supply power for a long stator section motor, the voltage at two ends of the motor is limited by the output voltage of a single converter, and the speed of the motor is limited.
Disclosure of Invention
The invention provides a bilateral series power supply system and method for high-speed maglev traffic, aiming at solving the problems that two sections of converters of a power supply system line of the existing high-speed maglev train are connected in parallel to supply power to a motor, the voltages at two ends of the motor are limited by the output voltage of a single converter, and the speed of the motor is limited.
The invention relates to a bilateral series power supply system of a high-speed magnetic suspension traffic, which comprises two substations at two ends of a line, a feed cable and a long stator winding of a linear motor.
All 1 traction power supply controller and 3 converters are used for each transformer; the long stator winding of the linear motor is divided into a plurality of long stator sections, a trackside switch station is arranged beside each long stator section, 3 trackside switches are arranged in each switch station, the input side of each switch station is connected with 3 converters, and the output side of each switch station is connected with one end of the long stator winding of the section.
Two sides of the track are respectively provided with a group of linear motor long stator windings, and long stator sections on the two sides are arranged in a staggered mode, namely the switching position of the left or right track long stator section is at the 1/2 position of the right or left long stator section.
The winding method and the head-tail direction of the motor winding of each long stator section are the same, the head ends of all the stator section windings are connected to the trackside switching stations of 3 converters corresponding to the substation at one end, and the tail ends of all the stator section windings are connected to the trackside switching stations of 3 converters corresponding to the substation at the other end.
Two substations at two ends are communicated with each other, and are used for respectively controlling the synchronous switching of the trackside switches connected at the head side and the tail side of the stator section, and the output amplitudes of the converters corresponding to the two traction power supply controllers are equal and have 180-degree phase difference.
The invention discloses a bilateral series power supply method of a high-speed magnetic suspension traffic, which uses the bilateral series power supply system of the high-speed magnetic suspension traffic, and specifically comprises the following steps: the converter regulates the amplitude, frequency and phase of the output voltage and current in real time, and supplies power to the long stator section where the high-speed maglev train is located in a subsection mode through the feed cable and the trackside switch, and each long stator section can only have one train of maglev train at the same time.
The traction power supply controller closes a trackside switch beside a long stator section where the train is located according to the position of the train, each time, only one long stator section where the train is located on the left and right of each train is ensured to be in a power supply state, the train has 2 stator sections in total in a power supply working state, each working long stator section is respectively powered by current transformers on the left and right of different ends, the two current transformers are connected in series, namely, the output amplitudes are equal, and the phase difference is 180 degrees; when a train leaves a stator section and enters the next stator section to be switched for power supply, the trackside switch stations corresponding to two substations are connected into 1 converter which is originally idle and standby to supply power for the newly-put long stator section, meanwhile, the trackside switch which is originally used for supplying power for the section in the trackside switch station corresponding to the long stator section to be left is cut off, and the corresponding converter exits and becomes an idle and standby state.
The beneficial technical effects of the invention are as follows:
the invention can effectively solve the problems that two sections of converters in the power supply system circuit of the existing high-speed maglev train are connected in parallel to supply power to the motor, the voltage at two ends of the motor is restricted by the output voltage of a single converter, and the speed of the motor is limited, and only the wiring of the stator motor needs to be changed and the software algorithm of the converter needs to be updated without changing the hardware of the traditional converter. Compared with the traditional parallel converter power supply method, the parallel converter power supply method has the advantage that the phase voltage of the motor can be doubled by adopting the serial converter power supply method of the converters at two ends of the circuit under the condition that the length of the power supply interval is not changed.
Drawings
Fig. 1 is a general block diagram of a two-sided series scheme of a power supply system.
Fig. 2 is a wiring diagram of the series operation of a long stator section motor and a current transformer.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
The bilateral series power supply system of the high-speed magnetic suspension traffic is shown in figure 1 and comprises two substations at two ends of a line, a feed cable and a long stator winding of a linear motor.
All 1 traction power supply controller and 3 converters of each transformer, 6 converters at two ends supply power for an interval together; the long stator winding of the linear motor is divided into a plurality of long stator sections, a trackside switch station is arranged beside each long stator section, 3 trackside switches are arranged in each switch station, the input side of each switch station is connected with 3 converters, and the output side of each switch station is connected with the long stator winding of the corresponding section. The working connection of the long stator section motor and the current transformer in series is shown in figure 2.
Two sides of the track are respectively provided with a group of linear motor long stator windings, and long stator sections on the two sides are arranged in a staggered mode, namely the switching position of the left or right track long stator section is at the 1/2 position of the right or left long stator section.
The winding method and the head-tail direction of the motor winding of each long stator section are the same, the head ends of all the stator section windings are connected to the trackside switching stations of 3 converters corresponding to the substation at one end, and the tail ends of all the stator section windings are connected to the trackside switching stations of 3 converters corresponding to the substation at the other end.
Two substations at two ends are communicated with each other, and are used for respectively controlling the synchronous switching of the trackside switches connected at the head side and the tail side of the stator section, and the output amplitudes of the converters corresponding to the two traction power supply controllers are equal and have 180-degree phase difference.
The invention discloses a bilateral series power supply method of a high-speed magnetic suspension traffic, which uses the bilateral series power supply system of the high-speed magnetic suspension traffic, and specifically comprises the following steps: the converter regulates the amplitude, frequency and phase of the output voltage and current in real time, and supplies power to the long stator section where the high-speed maglev train is located in a subsection mode through the feed cable and the trackside switch, and each long stator section can only have one train of maglev train at the same time.
The traction power supply controller closes a trackside switch beside a long stator section where the train is located according to the position of the train, each time, only one long stator section where the train is located on the left and right of each train is ensured to be in a power supply state, the train has 2 stator sections in total in a power supply working state, each working long stator section is respectively powered by current transformers on the left and right of different ends, the two current transformers are connected in series, namely, the output amplitudes are equal, and the phase difference is 180 degrees; when a train leaves a stator section and enters the next stator section to be switched for power supply, the trackside switch stations corresponding to two substations are connected into 1 converter which is originally idle and standby to supply power for the newly-put long stator section, meanwhile, the trackside switch which is originally used for supplying power for the section in the trackside switch station corresponding to the long stator section to be left is cut off, and the corresponding converter exits and becomes an idle and standby state.
Claims (4)
1. A bilateral series power supply system of high-speed magnetic suspension traffic is characterized by comprising two substations at two ends of a line, a feed cable and a long stator winding of a linear motor;
all 1 traction power supply controller and 3 converters are used for each transformer; the long stator winding of the linear motor is divided into a plurality of long stator sections, a trackside switch station is arranged beside each long stator section, 3 trackside switches are arranged in each switch station, the input side of each switch station is respectively connected with 3 converters, and the output side of each switch station is connected with one end of the long stator winding of the section;
two sides of the track are respectively provided with a group of linear motor long stator windings, and long stator sections on the two sides are arranged in a staggered mode, namely the switching position of the left or right track long stator section is at the 1/2 position of the right or left long stator section.
2. The bilateral series power supply system of the high-speed magnetic suspension traffic as claimed in claim 1, wherein the winding method and the head-to-tail direction of the motor winding of each long stator section are the same, the head ends of all the stator section windings are connected to the trackside switching stations of 3 converters corresponding to one-end substation, and the tail ends of all the stator section windings are connected to the trackside switching stations of 3 converters corresponding to the other-end substation.
3. The bilateral series power supply system of the high-speed magnetic suspension traffic as claimed in claim 1, wherein the two substations at the two ends are communicated with each other to control the synchronous switching of the trackside switches connected at the head and tail sides of the stator sections respectively, and the output amplitudes of the converters corresponding to the two traction power supply controllers are equal and have a phase difference of 180 degrees.
4. The power supply method of the bilateral series power supply system of the high-speed magnetic-levitation transportation according to claim 1, wherein the current transformer adjusts the amplitude, frequency and phase of the output voltage and current in real time, and supplies power to the long stator sections where the high-speed magnetic-levitation train is located in sections through the feeder cable and the trackside switch, and each long stator section only has one row of magnetic-levitation trains at the same time;
the traction power supply controller closes a trackside switch beside a long stator section where the train is located according to the position of the train, each time, only one long stator section where the train is located on the left and right of each train is ensured to be in a power supply state, the train has 2 stator sections in total in a power supply working state, each working long stator section is respectively powered by current transformers on the left and right of different ends, the two current transformers are connected in series, namely, the output amplitudes are equal, and the phase difference is 180 degrees; when a train leaves a stator section and enters the next stator section to be switched for power supply, the trackside switch stations corresponding to two substations are connected into 1 converter which is originally idle and standby to supply power for the newly-put long stator section, meanwhile, the trackside switch which is originally used for supplying power for the section in the trackside switch station corresponding to the long stator section to be left is cut off, and the corresponding converter exits and becomes an idle and standby state.
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| CN202110853983.3A CN113479069B (en) | 2021-07-28 | 2021-07-28 | Bilateral series power supply system and method for high-speed magnetic levitation traffic |
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| CN202110853983.3A CN113479069B (en) | 2021-07-28 | 2021-07-28 | Bilateral series power supply system and method for high-speed magnetic levitation traffic |
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| CN113479069B CN113479069B (en) | 2022-10-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114999285A (en) * | 2022-08-03 | 2022-09-02 | 中国人民解放军海军工程大学 | Electromagnetic drive type microgravity environment tower falling system |
Citations (5)
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|---|---|---|---|---|
| DE3333608A1 (en) * | 1983-09-14 | 1985-03-28 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Magnetic cushion vehicle of the magnetic cushion train type with long-type stator drive |
| CN111098714A (en) * | 2018-10-25 | 2020-05-05 | 中车株洲电力机车研究所有限公司 | Traction power transformation unit and traction power supply system |
| CN111890945A (en) * | 2019-05-05 | 2020-11-06 | 株洲中车时代电气股份有限公司 | Traction control system of medium-high speed maglev train |
| CN112046344A (en) * | 2020-08-13 | 2020-12-08 | 中国人民解放军海军工程大学 | Traction power supply system suitable for high-speed magnetic suspension train linear motor |
| CN112255530A (en) * | 2020-10-13 | 2021-01-22 | 中车株洲电力机车研究所有限公司 | Electrical equipment self-checking device and method of high-speed magnetic levitation traction system |
-
2021
- 2021-07-28 CN CN202110853983.3A patent/CN113479069B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3333608A1 (en) * | 1983-09-14 | 1985-03-28 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Magnetic cushion vehicle of the magnetic cushion train type with long-type stator drive |
| CN111098714A (en) * | 2018-10-25 | 2020-05-05 | 中车株洲电力机车研究所有限公司 | Traction power transformation unit and traction power supply system |
| CN111890945A (en) * | 2019-05-05 | 2020-11-06 | 株洲中车时代电气股份有限公司 | Traction control system of medium-high speed maglev train |
| CN112046344A (en) * | 2020-08-13 | 2020-12-08 | 中国人民解放军海军工程大学 | Traction power supply system suitable for high-speed magnetic suspension train linear motor |
| CN112255530A (en) * | 2020-10-13 | 2021-01-22 | 中车株洲电力机车研究所有限公司 | Electrical equipment self-checking device and method of high-speed magnetic levitation traction system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114999285A (en) * | 2022-08-03 | 2022-09-02 | 中国人民解放军海军工程大学 | Electromagnetic drive type microgravity environment tower falling system |
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