Power supplying method by triple current feeding of linear motor type railway

[Detailed Description of the Invention]

The present invention relates to the electric power method for liking to use two or more power converters for promotion of a train in a linear motor type railroad. It is said that a railroad by the conventional adhesion method has a limit of speed in the level of 300 km/h. - made remarkable [ a damage problem ] to noise in a high-speed region, and vibration -- in order to solve a problem of these, development of a rapid transit organization of low pollution by Linear and evening promotion, and magnetic levitation is furthered. Conventionally, in the Magnetic floating ' top type railroad by synchronous linear motor (18M is called) promotion, the electric power supply to 13M ground coil is performed by the double feeding power method. Drawing 1 is a circuit diagram of the conventional double feeding power method. In a figure (N-/), Ns (N+/) shows the number of each section. In this double feeding power method, a substation is arranged in the central part of the Army section, one the 3 phase power converter (it is hereafter called the power converter) / % Co which changes frequency continuously according to train speed are used, and it is Ll! Feeding is carried out to 1M ground coil group. An ICBM ground coil group is classified for every above-mentioned section, and is connected with feeding line 7 and l by turns via each feeding classification switch J, l, and J and A, respectively. According to Drawing 1, when a train exists in N section, feeding classification Switcher connected to 18M ground coil group of N section is supplied, electric wire 7 is tied at the time of 18M ground coil group of N section, and supply of electric power is performed from power converter l to 18M ground coil group of N section. Next, it prepares for a train entering to (N+l) a section, feeding classification switch 5 of a section (N+/) is thrown in, and it energizes from power converter Co to philharmonic the L of section (N+/) 8'M ground ground. If a train runs and it finishes crossing to (11-1-/) a section, after extracting the current of power converter l to zero, feeding classification Switcher of N section will be opened wide and the energization to the L8M ground coil group of N section will be stopped. Then, it prepares for throwing in feeding classification switch 6 of a section (N+2), energizing to 18M ground coil group of CN+ Co section, and a train entering to a section (M+ Co). Thus, whenever a train passes a section, the method of supplying electric power to 18M ground coil group by turns from a power converter / S- is the conventional double feeding method. However, it is although how to increase the feeding current from a power converter can be considered in this double feeding method without changing the method of increasing the number of LSM ground philharmonic turns, and 18M ground coil, in order to make the impelling force of a train increase, About the former, since raising the dielectric strength of 18M ground coil has a limit, the feeding current from a power converter must be enlarged and it becomes diameter[ of a large ]-izing of a feeding line, and increase of a feeding line loss. What also has a large scale power converter is needed. Since the section which is not energized is made at the time of failure of a feeding classification switch, a feeding line, a power converter, etc. and electric power is not supplied to the section concerned, the thrust of 18M serves as zero, when a train enters to this section, the shock on the run characteristic is great, and a degree of comfort worsens. And in order considering the case where the train has stopped at this broken section to move a train, a certain methods other than LSM ground coil promotion are needed. The present invention makes single opportunity capacity of a power converter small compared with the double feeding method. Make the total installed capacity of a power converter small. The system of a double system is constituted from dividing 58M ground coil into one to a vehicles field, and the feeding system whose reliability it is efficient and is high is provided. namely, -- while the LSM ground philharmonic group of the Co group by which series connection was carried out independently, respectively is classified for every predetermined length for Co-section in the power supply method for train promotion in a present invention beam Near motor type railroad, and one goes away and making this into the army section The army section to be these-classified can be relatively shifted by l Cef 95 A, and it arranges, and while energizing the above-mentioned Army section containing Section ' A in which a train is located by one set of a power converter, one others are made and the army section is switched. Hereinafter, the present invention is explained according to drawing □. Drawing 1 is a circuit diagram of the Mie feeding method which shows one example of the present invention. While 18M ground coil group of the Co group by which series connection was carried out independently, respectively is classified into the section of a prescribed interval like (N+ Co) (H-') and N% (N+/) in Drawing 1, and one goes away and making a part for lambda Cef 99 A into the army section, These Army sections could be relatively shifted by l Cef 95 A, and, on the other hand, it went away of arrangement, i.e., the above, 2 sets of XrBM ground coil groups, and the army section could be shifted by the Army section of another side, and l Cephalon, and is arranged. Therefore, by covering a twice as many section leader as the conventional double feeding method, and classifying 58M ground coil, one length for Co-section goes away, the army section is formed, and the state where it moreover overlapped by l Cef 95 A is formed. it was formed in the above-mentioned both Li(s)9M ground philharmonic group as shown in Drawing 1 -- go away respectively and the army section should pass a feeding line /[ feeding classification switch 9, 1//l IO(s), and then ] 4, /Ri, and /1 -- it is connected to a 3 phase power converter /J, /#, /j, and 3 phase *~Current flow 9. At this time, each feeding line 16, tt, and tg are every l section by turns about the Army section of one Lf9M ground coil group of both the I+SM ground coil groups, and the Army section of 18M ground coil group of another side, It has connected via feeding classification switch ? which it had for every feeding section, and a 10. /lS/piece, respectively. By opening and closing an applicable feeding classification switch one by one, according to advance of a train, a predetermined section can be energized so that it may mention below. If it puts in another way, while energizing the Army section containing the section in which a train is located by one set of a power converter, one others are made and the army section is switched. In the present invention, feeding of one set of the power converter is used and carried out in the above composition. Therefore, a thrust is obtained on a train. For example, while a train is running N section, feeding classification switch 10 and //will be supplied and the LSM8M ground coil electric power of one of the two of N section and (N+/) a section is supplied from two sets of converters, a power converter / 4t, and /j. It prepares for the train penetration to a section, and energizes and waits from power converter 13 to the remaining one of the two of the Lu1l. top coil group of a Yo ? section part (N+/) to throw in l A room classification switches (N+/). if a train finishes including a section (N 10/), it will go away, while it is alike and energizing to the LI9M ground 10 coil group of a section part, and feeding classification switch 10 of l electric wires will be turned off, and only L8M8M ground coil one of the two of N section will stop energization. It energizes from a power converter / 4' to 18M ground coil group of a section after that (N+ Co), and prepares for section penetration of a train. As mentioned above, in 3 weight Placement method by the present invention, it is to always supply electric power using the power converter of one per l section, and to energize into the section of one beyond under train run by one set of the remaining power converter. Although it is expected that the electric power loss accompanying feeding becomes large in order that according to the present invention the energization section prepared for a train entering to the following section may be long by l section and also may use three sets of power converters compared with the conventional 2 weight Placement method, Since train impelling force is shared with one set of a power converter, the impelling force per power converter serves as half compared with 2 weight Placement method, and the back electromotive force by train run is reduced by the half. Therefore, when Phil's dielectric strength is made the same as that of 2 weight Placement method, the number of turns of 1.-8M ground coil can be increased, and the energization current from a power converter can be made small. If for example, the number of Llli1M ground coil turns is designed to Placement method 1 time the number of turns of 2 weights, the connoisseur from a power converter -- 1! style serves as half at ' compared with 2 weight Placement method, and further, if a section leader and LSM coil arrangement are carried out just like double feeding, the increase in the electric power loss accompanying 1 feeding can be suppressed. When energization current serves as half, it presses down below to the installed capacity at the time of 2 weight Placement method by the comprehensive capacity which power converter single opportunity capacity was stopped and united three sets, and people are impossible. Or since the electric power of % is supplied to the section from the healthy power converter even if failure of a feeding line, a power converter, etc. occurs, it is not no energizing like 2 weight Placement method, and even if a train goes into the section concerned, the shock given to a train can be made small. Even if the train has stopped at the section concerned, since the electric power of % is given, the divided Lost thing does not have a function of a linear motor like a previous reason, either. Drawing 3 is an equivalent circuit at the time of the train load about an one power converter l phase. -As for output military 1sV N piece J of electric power queerness and Ventilator, in 0, back electromotive force FmV of a train and Co l are the impedance (resistance R/omega, reactances I/H) of a feeding line. -1 shows the impedance (resistance Rmomega, reactance LmH) of 18M ground coil. If the above value is made into the value at the time of 2 weight Placement method, it is an electronic equation in 2 weight Placement method, One power converter steals, it is shown by ms-Km+ (R/+Rm) Engineering !!l+J Ql (L/+I+m) Engineering m, and total one converter * electric energy of a per is P, +j Q, -, and 7XIsXEngineeringm= (set to ff!m Engineering m+ (RJ"+1m) Engineering I!LL+-jomega (L/+Lm) Knee] x3.). Since To U The and the energization current per power converter, on the other hand, end the number of turns of 18M ground coil 1 time in a half in 3 weight Placement method, Since coil paste Actance will be Da twice and resistance will serve as Yuten in the current density which flows into 18M ground coil, if one coil is designed on certain conditions, An electrical engineering equation equivalent to Kmm Ventilator 7 A I in the case of a 3 weight electric power wave is mm5-11t+ (the electric energy which becomes R/+4(Rm) Ding +Jomega (It/+"") J-, and 1 train run takes is x3 per power converter). Bmmm Rf - It is set to [Completion + (a+"m) Engineering ♂+jomega (X4+ Fluttering) Eno] x3. Therefore, as the electric energy of one set of a power converter It is set to P+j Q and s-(Hm Engineering 4+ Co Rffi) Engineering mLFjomega (!\1-Co Lm) Knee] x3. Although the loss for a LSM ground coil increases from this as compared with the case of double feeding, the loss of a feeding line decreases and there is no great difference as the whole electric energy. As for the electric power accompanying a feeding classification switch change, a 2 weight electric power wave is set to omega (L7+Lm) Knee published by Ps*+j Qt = (R7-) (Rm) Eno]x3 in a similar manner, A 3 weight electric power wave is (",") '11m+j Q's a-(R/+4'Rm) ("(", i) published by omega(Lf+Q Lm)) XJ" (RJ+Rm) (Engineering m"+jomega (argument) Knee] x3 A). It becomes. Thereby, it compares with a 2 weight electric power wave, and is at a 3 weight electric power wave, Since the 3 weight electric power wave is supplied by three sets while the 2 weight electric power wave supplies electric power by one set the methods of 01 which can say that there are few losses of a feeding line, and the capacity per power converter so that the train is distant from the substation, compared with a 2 weight electric power wave, single opportunity capacity becomes small. That is, if only electric power required for promotion compares simply, since current becomes % by a 3 weight electric power wave to P+ and -j"m Engineering m, a 2 weight electric power wave will serve as PH1-Jlltm Engineering m/' Cau, y / 2-in Engineering m, and the electric energy of one power converter Devotion will turn into single opportunity capacity of abbreviation ~. To JFfm Engineering mXJ stand-41+111 Engineering m, the double transformation method is -111mImXJ stand-3Xm Engineering m, and the total installed capacity of a power converter is [ a 3 weight electric power wave ] the Mie Co. coming -- an electric power wave -- about [ of a 2 weight electric power wave ] -- it becomes Jl person installed capacity and becomes economical also from on equipment of a power converter. As explained above, according to the present invention, the loss of electric power is suppressed and the fault on Si and the run characteristic can be small canceled for power converter single opportunity capacity.

[Brief Description of the Drawings]

Circuit A figure 3 of a 3 weight electric power wave in which circuit diagram 1 figure 1 of the 2 weight electric power wave of the former [ Drawing / 1 ] shows one example of the present invention is a representative circuit schematic at the time of the train load about an one power converter [ of the present invention ] l phase. /, 2.XJ, /41.XJ -.. A 3 phase power converter, 3.u, 3 micro, A, to. /l and /Co ... a feeding classification switch, Ri, r, tt, t persons, and l Rough ... a feeding line and l Chi ... 3 phase power supplies 10- The 11th Drawing 2 Drawing 3 11-