A kind of the dynamic model analogue system and control method of urban track trafficTechnical field
The present invention relates to technical field of rail traffic more particularly to a kind of novel dynamic model analogue systems of urban track trafficAnd control method.
Background technique
In recent years, China's urban population and vehicle fleet size have substantially with the high speed development of domestic economy more in the pastIncrease, which increase the loads of communications and transportation, so that heavy congestion occurs in urban transportation.Urban track traffic is convenient due to havingFast, the advantages that safety is punctual effectively alleviates the problem of going on a journey congestion, trip quality is improved, nowadays by people instituteIt accepts extensively, and has obtained quick development.
Urban track traffic tractive power supply system is a complicated multi-variable system, directly to whole system in different fortuneComplete analysis comprehensively is carried out under row operating condition to be difficult to realize, therefore equivalent small-power dynamic model simulation model is established to itCooperation research is effective and necessary.The dynamic model emulation of urban track traffic tractive power supply system needs centering pressure ring net, simulationMultiple compositions such as traction institute, conductor rail and train establish simulation model respectively, then combine each section simulation model to simulate realityThe various operating conditions and malfunction of border tractive power supply system, protection and control device to being run in tractive power supply systemFunction and performance examined, with ensure protect and the reliability service of control device at the scene.
Summary of the invention
In view of the deficiencies in the prior art, the present invention provides a kind of imitative systems of the novel dynamic model of urban track trafficSystem and control method, it is high to the simulation precision run under train difference operating condition each in dynamic model simulation model, and have at low cost, peaceThe features such as property is high entirely.
The present invention provides a kind of dynamic model analogue system of urban track traffic, comprising: pressure ring net, several simulations are led in simulationDraw institute, analog DC conductor rail, analog orbit vehicle and analog AC conductor rail；
Pressure ring net connection in the input side of simulation traction institute and simulation, outlet side is connected with analog DC conductor rail,Simulation traction institute, which is converted to the alternating voltage of pressure ring net in simulation to export after DC voltage, gives analog DC conductor rail；
The analog DC conductor rail is made of the conductive media rail that two are respectively positive and negative grade, and two conductive media rails are usedIn supply analog orbit vehicle DC electric energy；
The analog orbit vehicle interior includes two-way DC/AC converter, DC/AC controller, mobile transformer, speed regulation changeParallel operation, speed adjusting plate and motor；
The two-way DC/AC converter DC side is connected with analog DC conductor rail, and exchange side is three-phase alternating voltage, pointIt is not connected with speed regulation converter and mobile transformer, the speed adjusting plate side is through adjusting the speed converter from two-way DC/AC converterElectricity side-draw is exchanged, the other side connects motor, to change the revolving speed of motor；It can control two-way DC/AC by DC/AC controller to becomeParallel operation work is in rectification or inverter mode, to simulate traction and damped condition in true train operation；
The mobile transformer other end connects analog AC conductor rail, with play the role of each convoy spacing from；
Electrical energy transportation is returned pressure ring in simulation by transformer by pressure ring net in the analog AC conductor rail connection simulationNet, lower alternating voltage grade improve the safety of dynamic model emulation.
Optionally, the mobile transformer can select the isolating transformer of 1:1.
Optionally, the speed regulation converter is AC/DC converter.
Optionally, the motor is direct current generator.
The control method of the dynamic model analogue system of the urban track traffic, which is that the DC/AC controller uses, is based on d-qSingle electric current ring closed-loop control under rotating coordinate system, specific steps are as follows:
The q axis component given value I of electric currentqrefIt is 0, three-phase alternating current IabcBy abc/dq coordinate transform output d axis electricityFlow value of feedback IdWith q shaft current value of feedback Iq, the q axis component given value I of electric currentqrefWith q shaft current value of feedback IqCarry out difference ratioCompared with by comparison result input pi regulator one, pi regulator one controls two-way DC/AC converter work in unity power factor mouldFormula；The d axis component given value I of electric currentdrefWith d shaft current value of feedback IdDifference comparsion is carried out, comparison result is inputted into pi regulatorTwo；The output result of two pi regulators carries out SVPWM pulsewidth modulation, SVPWM pulsewidth modulation after the anti-coordinate transform of dq/ α βOutput result is for controlling two-way DC/AC converter, the d axis component given value I of electric currentdrefBy being given to different positive or negativeValue to control two-way DC/AC converter work in rectification or inverter mode, and then simulates traction or the damped condition of train.
Detailed description of the invention
The present invention has following attached drawing:
Fig. 1 is the dynamic model simulation architecture schematic diagram of urban track traffic tractive power supply system provided by the invention；
Fig. 2 is analog orbit vehicle interior connection structure diagram provided by the invention；
Fig. 3 is the dynamic model Simulation Control block diagram of analog orbit vehicle provided by the invention.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the embodiment of the present invention, to thisTechnical solution in inventive embodiments is clearly and completely described, it is clear that described embodiment is that a part of the invention is realExample is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creationProperty labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Fig. 1 is the dynamic model simulation architecture schematic diagram of urban track traffic tractive power supply system provided by the invention, the cityThe dynamic model analogue system of city's rail traffic includes: pressure ring net in simulation, simulation traction institute, analog DC conductor rail, analog orbitVehicle, analog AC conductor rail.
Pressure ring net in the simulation provided in the present embodiment, simulation traction institute, analog DC conductor rail, analog orbit vehicle,Analog AC conductor rail be middle pressure ring net in solid element, with practical application, traction institute, conductive media rail, rail vehicle,The principle of ac conduction rail, effect are identical, but due to being that rail vehicle such as subway, light rail provides AC energy in practical applicationPower grid voltage it is very high, the condition in laboratory is not achieved at all, therefore simcity rail traffic provided in this embodimentIt added " simulation " before device in the dynamic model simulator of vehicle.
Wherein, simulation traction the alternating voltage of pressure ring net in simulation be converted into DC voltage be supplied to analog DC and leadElectric rail, analog orbit train connection analog DC conductor rail and analog AC conductor rail, analog AC conductor rail pass through transformerIt is connected with pressure ring net in simulation, forms the network of energy circulation net.
Fig. 2 is analog orbit vehicle interior connection structure diagram provided by the invention.Analog orbit vehicle interior includes two-wayDC/AC converter, mobile transformer, speed adjusting plate and motor etc., two-way DC/AC converter DC side and analog DC conductor rail phaseEven, the mobile transformer inside the connection of exchange side, the other end of mobile transformer connects analog AC conductor rail, to play each vehicleThe effect being isolated between.
Optionally, mobile transformer can select the isolating transformer of 1:1.
Speed adjusting plate side is adjusted the speed exchange side-draw electricity of the converter from two-way DC/AC converter, and the other side connects motor, changesThe revolving speed of power transformation machine, to simulate the operation of friction speed Train.
Optionally, speed regulation converter can select AC/DC converter, and motor can select direct current generator.
Fig. 3 is the dynamic model Simulation Control block diagram of analog orbit vehicle provided by the invention, which be used to simulateTwo-way DC/AC controller inside rail vehicle.It can control two-way DC/AC converter work whole by DC/AC controllerStream or inverter mode, to simulate traction and damped condition in true train operation.
The control method of DC/AC controller be using based on the single electric current ring closed-loop control under d-q rotating coordinate system, whereinThe q axis component given value of electric current is 0, and pi regulator controls two-way DC/AC converter work in unity power factor mode, electric currentD axis component by different positive or negative given values, to control two-way DC/AC converter work in rectification or inversion, in turnSimulate traction or the damped condition of train.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extentPipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according toSo be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features intoRow equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solutionThe range of scheme.