CN2327581Y

CN2327581Y - Energy recovering device of railway vehicles

Info

Publication number: CN2327581Y
Application number: CN 97231223
Authority: CN
Inventors: 王培源
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-18
Filing date: 1997-12-18
Publication date: 1999-07-07
Anticipated expiration: 2007-12-18

Abstract

The utility model relates to an energy recovering device of railway vehicles. Two output ends of a one-time generator are respectively connected with two input ends of an electron mixed output device; the primary coil of a transformer B is connected with patched alternating current power supply, and both ends of the secondary coil of a transformer B are connected with the other two input ends of the electron mixed output device whose output ends are respectively connected with the positive and the negative poles of a DC motor; a power shaft of the DC motor is connected with a main shaft of a secondary generator whose output end is connected with a primary coil of a transformer C; the secondary coil of the transformer C is connected with an electrical network. The utility model has the advantages that the utility model solves the problem that pulsating current can not be directly returned to the electrical network, and overcomes the problem of low current switching power of an inverter.

Description

The train energy recycle device

The utility model relates to the energy recycle device that the kinetic energy of power actuated vehicle is changed into electric energy, refers in particular to a kind of train energy recycle device.

When power actuated vehicles such as automobile travel according to the difference of road physical features, the energy that needs is also different, for example when going up a slope, need driving engine that bigger energy is provided, and when descending, do not need driving engine that energy is provided, so some automobiles carry electrical generator, the release energy during with automobile downhill changes power delivery into to be used to automotive battery.

Therefore, people expect naturally, does kinetic energy in the time of can be with the train descending change the electric energy second use into? particularly China is the country on mountain more than, many rails are all built in mountain tunnel, train is often wanted ascents and descents, send electrical network back to if the kinetic energy in the time of can be with the train descending changes electric energy into, can save a large amount of energy.

It is more more complex than automobile that yet let-loose energy changes the technology of electric energy into during with the train descending, at first the weight of train is very big, let-loose energy is also very big during descending, after being transformed into electric energy with electrical generator, what electric energy was big can not store, and the form that can only be transformed into alternating current is sent electrical network back to by voltage transformer, yet is subjected to the restriction of landform and road grade during the train descending, speed is sometimes fast and sometimes slow, and the electric current that its electrical generator sends has two characteristics: the one, and big electric current, small voltage.The 2nd, for pulsation, unsettled, positive-negative half-cycle do not wait the alternating current of amplitude, can make the power factor of voltage transformer very low if directly supply with voltage transformer, that is to say that pulsatory current can not directly send electrical network back to, otherwise will cause power network current to flow backwards.

The someone proposes the train electrical generator is sent the rectification of electric current elder generation for this reason, become the stable DC electricity is transformed into standard again through inverter alternating current, send electrical network back to by step-up transformer again, yet the principle of work of inverter is to take turns conducting by the on-off action transistor that rises in the circuit, vdc is transformed into alternating-current voltage/AC voltage, if want to improve the power of inverter, just must improve the switching frequency of transistor switch, and switching frequency is when too high, can cause the overheated or breakdown damage of transistor, therefore, the work of inverter is subjected to the restriction of conditions such as frequency, its horsepower output can be too not high, and it can not give grid transmission, because the electric flux of carrying to electrical network can not be big electric current, the electric flux of small voltage, can not be big voltage, the electric flux of little electric current, can only be big voltage, the electric flux of big electric current be if give the electric current that grid transmission on the contrary can the suck-back electrical network with inverter.

The purpose of this utility model is to provide a kind of train energy recycle device, solves pulsatory current and can not directly send the problem of electrical network back to, and overcome the low problem of inverter current transfer power.

The purpose of this utility model is achieved in that

A kind of train energy recycle device includes voltage transformer, electrical generator, electronics mixing follower, and by the power pack that DC motor and secondary electricity generation machine are formed, it is characterized in that:

This electronics mixing follower H is composed in parallel by four element circuits that are associated with the Y shape structure of diode, and wherein the element circuit of each Y shape structure has three branch roads: branch road a, branch road b, branch road c are in series with two diodes on the branch road a; Be in series with a diode on the branch road b, also be in series with a diode on the branch road c; Branch road a in the element circuit of a Y shape structure, branch road b, the direction that branch road c goes up diode in series is identical, diode direction on the element circuit of two adjacent Y shape structures is opposite, the branch road a of the element circuit of described each Y shape structure is the connection at interval each other, its connection end point m1, m2 is the dc output end of electronics mixing follower H, the branch road b of the element circuit of each Y shape structure is connected with the branch road c of the element circuit of adjacent Y shape structure, be that diode b2 is connected with diode c1, diode b1 is connected with diode c2, the contact Q1 between them, Q2, Q3, Q4 is four ac input ends of electronics mixing follower H;

The mouth of an electrical generator F1 is connected with the Q1 end of above-mentioned electronics mixing follower H through a under-voltage circuit breaker K1; Another mouth of F1 is connected with the Q2 end of electronics mixing follower H through under-voltage circuit breaker K2; Above-mentioned under-voltage circuit breaker K1, K2 is a linked circuit breaker, the primary coil of voltage transformer B is through two under-voltage circuit breaker K3, K4 with connect source of AC P and be connected, circuit breaker K3, K4 also is a linked circuit breaker, one end of the secondary coil of voltage transformer B is connected with the Q3 of H end, the other end of the secondary coil of B is connected with the Q4 of H end, the mouth m1 of H, m2 end respectively with DC motor D just, negative pole connects, the dynamical axis of DC motor D is connected with the main shaft of secondary electricity generation machine F2, secondary electricity generation machine F2 is an alternating current generator, the mouth of F2 is connected with the primary coil of voltage transformer C, and the secondary coil of voltage transformer C is through two under-voltage circuit breaker K5, K6 is connected with electrical network; Above-mentioned under-voltage circuit breaker K5, K6 is the circuit breaker of interlock.

Diode among the described electronics mixing follower H on each branch road is a silicon control.

The utility model has following positive beneficial effect:

Earlier with an electrical generator during with the train descending let-loose energy change electric energy into, the electric current that electrical generator sends is a pulsatory current, electric current is bigger, voltage is lower, and it is unstable, but scheme of the present utility model is this pulsatory current to be sent into two input ends of electronics mixing follower, become direct current (DC) through rectification, two other input end of electronics mixing follower is added with and connects source of AC, the effect that connects source of AC is to add higher voltage to electronics mixing follower, pass through principle of superposition, compensate unsettled that electrical generator sends, lower pulsating voltage, thereby outgoing current is bigger, higher and the galvanic current of voltage, give power pack with this direct current (DC) and be transformed into alternating current, just can send electrical network back to through voltage transformer again, because of power pack is made up of DC motor and secondary AC electrical generator, it is transformed into the power of alternating current with direct current (DC) can be very big, do not resemble inverter and will be subjected to the influence of transistor switch switching frequency restriction, therefore the phenomenon of suck-back electric current from the electrical network can not take place when grid transmission.

Now in conjunction with the accompanying drawings the utility model is described in further detail as follows with preferred embodiment:

Fig. 1 is a circuit diagram of the present utility model;

Fig. 2 is the internal wiring figure of electronics mixing follower among Fig. 1;

See also Fig. 1, train energy recycle device of the present utility model, the power pack that includes voltage transformer B, C, electrical generator F1, an electronics mixing follower H and form by DC motor D and secondary electricity generation machine F2, see also Fig. 2, the circuit of this electronics mixing follower H is to be composed in parallel by four element circuits that are associated with the Y shape structure of diode, wherein the element circuit of each Y shape structure has three branch roads: branch road a, branch road b, branch road c are in series with two diodes on the branch road a; Be in series with a diode on the branch road b, also be in series with a diode on the branch road c; And branch road a in the element circuit of a Y shape structure, branch road b, the direction that branch road c goes up diode in series is identical, diode direction on the element circuit of two adjacent Y shape structures is opposite, the branch road a of the element circuit of described each Y shape structure is the connection at interval each other, its connection end point m1, m2 is the dc output end of electronics mixing follower H, the branch road b of the element circuit of each Y shape structure is connected with the branch road c of the element circuit of adjacent Y shape structure, be that diode b2 is connected with diode c1, diode b1 is connected with diode c2, the contact Q1 between them, Q2, Q3, Q4 is four ac input ends of electronics mixing follower H; Above-mentioned annexation not only makes electronics mixing follower H have rectification function, and make H have the function of superimposed current and voltage, because of its four branch roads are in parallel, therefore, its output voltage is the voltage of the maximum branch road of magnitude of voltage in four branch roads, voltage in other branch road is the lower voltage of pulsation, does not also influence the voltage of this electronics mixing follower H mouth.

Please consult Fig. 1 again, the mouth of an electrical generator F1 is connected with the Q1 end of above-mentioned electronics mixing follower H through a under-voltage circuit breaker K1; Another mouth of F1 is connected with the Q2 end of electronics mixing follower H through under-voltage circuit breaker K2; Above-mentioned under-voltage circuit breaker K1, K2 are linked circuit breaker, the primary coil of voltage transformer B through two under-voltage circuit breaker K3, K4 with connect source of AC P and be connected, circuit breaker K3, K4 be the circuit breaker for linking also, one end of the secondary coil of voltage transformer B is connected with the Q3 of H end, the other end of the secondary coil of B is connected with the Q4 of H end, the effect of voltage transformer B is that the voltage that will connect source of AC P raises, be added on two branch roads of electronics mixing follower H, to compensate pulsation that electrical generator F1 sends, lower voltage.Make the mouth output stable high voltage of electronics mixing follower H, be noted that in addition if do not use voltage transformer B so also can make high-voltage DC power supply into connecting source of AC P, but use voltage transformer that a benefit is arranged, can reduce electric current exactly in the process of boosting, so just can make full use of the pulsatory current that electrical generator F1 sends is the characteristics of big electric current, small voltage.Mouth m1, the m2 end of H is connected with the positive and negative electrode of DC motor D respectively, the dynamical axis of DC motor D is connected with the main shaft of secondary electricity generation machine F2, secondary electricity generation machine F2 is an alternating current generator, the mouth of F2 is connected with the primary coil of voltage transformer C, and the secondary coil of voltage transformer C is connected with electrical network through two under-voltage circuit breaker K5, K6; Above-mentioned under-voltage circuit breaker K5, K6 is the circuit breaker of interlock.More than the effect of each circuit breaker be that the voltage that sends as electrical generator F1 is when low, the connection of each element in the automatic shutdown circuit, to prevent the electric current backflow on the electrical network, direct current (DC) through electronics mixing follower H output flows to DC motor D, make the stabilization of speed of DC motor D, frequency, the number of phases of the positive-negative half-cycle that DC motor D drive alternating current generator F2 sends, the alternating current of the standard that waveform and argument all equate can be sent electrical network back to by voltage transformer C.

In preferred embodiment, the diode among the described electronics mixing follower H on each branch road is a silicon control.In rectification and superimposed voltage process, to improve the ability of the anti-puncture of pipe.

The technical solution of the utility model is with electronics mixing follower H and connects source of AC P in sum, the pulsatory current that electrical generator F1 is sent, become DC current and promote DC motor D running, avoid directly giving voltage transformer C with the pulsatory current that electrical generator F1 sends, the not high situation of transformation efficient is occurred, send the alternating current of standard with secondary electricity generation machine F2, C sends electrical network back to through voltage transformer, has overcome to use inverter to carry out the low problem of current conversion power.

Claims

1. train energy recycle device includes voltage transformer, electrical generator, electronics mixing follower, and by the power pack that DC motor and secondary electricity generation machine are formed, it is characterized in that:

2. train energy recycle device as claimed in claim 1 is characterized in that: the diode among the described electronics mixing follower H on each branch road is a silicon control.