CN104459535A - Car motor testing power supply for twin trawling - Google Patents
Car motor testing power supply for twin trawling Download PDFInfo
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- CN104459535A CN104459535A CN201310433253.3A CN201310433253A CN104459535A CN 104459535 A CN104459535 A CN 104459535A CN 201310433253 A CN201310433253 A CN 201310433253A CN 104459535 A CN104459535 A CN 104459535A
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- car motor
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Abstract
The invention relates to a car motor testing power supply for twin trawling. The car motor testing power supply comprises an AC/DC rectification filtering power supply module, two DC/DC direct current converting modules, a load motor and a tested motor. The AC/DC rectification filtering power supply module comprises an AC input interface and an output interface. Each DC/DC direct current converting module comprises a DC input opening and a DC output opening. The input interface is connected with a three-phase power supply wire of a power grid. The output interface is connected with the DC input openings through power supply wires. The DC output openings are connected with the tested motor through power supply wires. The car motor testing power supply is mainly used for an electric car motor twin trawling testing experimental platform and can also be used on testing platforms such as frequency converter performance testing and direct-current speed regulator performance testing.
Description
Technical field
The present invention relates to a kind of battery simulator, be specifically related to one and use electric motor of automobile testing power supply to dragging.
Background technology
At present, two kinds of methods are mostly adopted to carry out dragging with power supply: one is that serial connection pull-up resistor consumes feedback electric energy, electric energy consumption is dispersed in the heating of high-power resistance, therefore, often carry out the electric energy that a mechanical back to back test consumption is a large amount of, and will monitor the change of supply voltage in time, in case excessive voltage pulsation occurs; Another kind adopts controllable silicon active inversion mode to power, which is by feeding electric energy electrical network, to reach energy-saving and cost-reducing object, although energy can be returned to electrical network and play energy-conserving action by which, because its current waveform feeding back to electrical network is square wave, containing a large amount of higher harmonic component, harmonic pollution is caused to electrical network, and electromagnetic noise is comparatively large when running, grid-connected power factor is also lower, the reactive energy of meeting large losses.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, propose and use electric motor of automobile testing power supply to dragging, described testing power supply is mainly used in electric vehicle motor to dragging test experiments platform, can also apply as on the test platforms such as frequency converter performance test, DC speed regulator performance test; Mechanical back to back test be make two motors machinery and electrically on realize coupling, two motor loads each other.Electric motor of automobile adopts direct current supply because of controller, and the problems such as the supply of power supply, feedback, pressure regulation that thus solve are major fields of current research.
Technical scheme of the present invention is: use electric motor of automobile testing power supply to dragging, comprise an AC/DC rectification filtering power module, two DC/DC DC conversion modules, a load motor and one are by measured motor, described AC/DC rectification filtering power module comprises an AC input interface and an output interface, DC/DC DC conversion modules comprises a DC input port and a DC delivery outlet, described input interface is connected with the three-phase power line of electrical network, described output interface is connected with DC input port by power lead, described DC delivery outlet is connected with by measured motor by power lead.
Described DC delivery outlet is connected with load motor by power lead.
The present invention has following beneficial effect:
1) system is to the supply of energy and absorption convenient, and switching time is short;
2) capacity extension is convenient, flexible;
3) voltage can realize step-less adjustment, with satisfied difference by the electric pressure demand of measured motor;
4) the mutual feedback that testing of electric motors general DC busbar realizes energy is often organized;
5) organize in tested Motor Measuring System more, mutually realize energy mutual feedback;
6) introduce brand-new soft-controller to modify setting to various parameter, need not any manual intervention;
7) the balanced synchronism output circuit of rectification multiple power levels, ensures parallel connection part load balance, extends each unit serviceable life;
8) reduce electric network pollution, raise the efficiency.
Accompanying drawing explanation
Fig. 1 system power supply structural representation of the present invention.
Fig. 2 system power flow graph of the present invention.
Fig. 3 AC/DC rectification filtering power of the present invention modular structure schematic diagram.
In figure, 1, electrical network; 2, AC/DC rectification filtering power module; 3, DC/DC DC conversion modules; 4, load motor; 5, by measured motor.
See shown in Fig. 1 to Fig. 3, the present invention uses electric motor of automobile testing power supply to dragging, comprise an AC/DC rectification filtering power module 2, two DC/DC DC conversion modules 3, a load motor 4 and one are by measured motor 5, described AC/DC rectification filtering power module 2 comprises an AC input interface and an output interface, DC/DC DC conversion modules 3 comprises a DC input port and a DC delivery outlet, described input interface is connected with the three-phase power line of electrical network 1, described output interface is connected with DC input port by power lead, described DC delivery outlet is connected with by measured motor by power lead, described DC delivery outlet is connected with load motor by power lead.System power supply structural representation as shown in Figure 1.The electric energy of electrical network 1, after AC/DC rectification filtering power module 2 carries out rectifying and wave-filtering, regulates supply to two motors, load motor 4 and the testing of electric motors 5 that drag by DC/DC DC conversion modules 3.The advantage of DC/DC DC conversion modules 3 is adopted to be: 1) adjustable DC/DC can adapt to the voltage-regulation on a large scale, and for testing of electric motors, various electric pressure can adapt to.2) adopt AC/DC+DC/DC structure, be equivalent to AC-DC-AC General Converters and be separated into independently two pieces, drawn adjustable DC bus.When system cloud gray model, met following two conditions by measured motor 5:
1) satisfied the requirements by measured motor 5 electric operation power-supply system
In this condition, two motor actual steerings are identical, and apply by measured motor 5 torque identical with rotary speed direction, now, be in motoring condition by measured motor 5, load motor 4 is in generating state, and the power flow direction of system as shown in Figure 2.Be P ∑ A by measured motor 5 power input, it is output mechanical power Pm on axle, and makes load motor 4 make generator operation energy back is returned controller 1, and its output power is P ∑ B, and energy Pdc is supplied controller 2 by controller 1 again.
2) satisfied the requirements by measured motor 5 generator operation power-supply system
In this condition, set two motor actual steerings by controller contrary, apply by measured motor 5 torque contrary with rotary speed direction, now, be in generating state by measured motor 5, load motor 4 is in motoring condition.Now, be mechanical output by the power input of measured motor 5, electromotive power output P ∑ A to controller 2, controller 2 by DC bus by energy feedback to controller 1.
As shown in Figure 3, AC/DC rectification filtering power module 2 after filtering, buffering, become direct voltage output after commutation inversion.Electric rectification device and discharge and recharge converter are all be made up of IGBT element.Energy during motor braking is fed back to electrical network 1, and due to IGBT inversion, feedback electric energy is near sinusoidal wave, few to the harmonic pollution of electrical network 1.In order to process Power supply and feedback frequently in time, power-supply system is equipped with two groups and entirely controls controlled bridge, and need not be abutted against tentaculum again to switch charging and discharging circuit, achieves the rapid translating between two kinds of functions.Adopt the power-supply system of two-way SPWM inversion commutation technique, because it can realize sinusoidal waveform and the High Power Factor control of grid-connected charging and discharging currents easily, pollution-free to electrical network, be therefore energy-efficient green power supply.System power switching device selects IGBT, its switch operating frequency can reach more than 20kHz, adopt special DSP data processor controlled, sine-shaped aberration rate is very little, noise is very low, the management function with the intelligent discharge and recharge of accumulator networking team control of system, can adapt to storage battery production and the maintenance of different electric pressure and type.Because this device has good control performance and economic target, its popularizing application prospect is good.
In addition, those skilled in the art also can do other change in the principle of the invention, and certainly, these changes done according to the principle of the invention, all should be included in the present invention's scope required for protection.
Claims (2)
1. pair to drag and use electric motor of automobile testing power supply, it is characterized in that: comprise an AC/DC rectification filtering power module, two DC/DC DC conversion modules, a load motor and one by measured motor, described AC/DC rectification filtering power module comprises an AC input interface and an output interface, DC/DC DC conversion modules comprises a DC input port and a DC delivery outlet, described input interface is connected with the three-phase power line of electrical network, described output interface is connected with DC input port by power lead, and described DC delivery outlet is connected with by measured motor by power lead.
2. according to claim 1ly using electric motor of automobile testing power supply to dragging, it is characterized in that: described DC delivery outlet is connected with load motor by power lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310433253.3A CN104459535A (en) | 2013-09-22 | 2013-09-22 | Car motor testing power supply for twin trawling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310433253.3A CN104459535A (en) | 2013-09-22 | 2013-09-22 | Car motor testing power supply for twin trawling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104459535A true CN104459535A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310433253.3A Pending CN104459535A (en) | 2013-09-22 | 2013-09-22 | Car motor testing power supply for twin trawling |
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| CN (1) | CN104459535A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866705A (en) * | 2016-06-03 | 2016-08-17 | 湖南世优电气股份有限公司 | Measuring method for capacity of backup power source of alternating current variable pitch system of wind generating set |
| CN108333508A (en) * | 2017-12-22 | 2018-07-27 | 苏州恒美电子科技股份有限公司 | Power control system for electromechanical testing |
| CN112816870A (en) * | 2021-01-27 | 2021-05-18 | 臻驱科技（上海）有限公司 | Virtual motor based carrier synchronization system and method for frequency converter drag test platform and computer readable storage medium |
-
2013
- 2013-09-22 CN CN201310433253.3A patent/CN104459535A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866705A (en) * | 2016-06-03 | 2016-08-17 | 湖南世优电气股份有限公司 | Measuring method for capacity of backup power source of alternating current variable pitch system of wind generating set |
| CN105866705B (en) * | 2016-06-03 | 2018-05-22 | 湖南世优电气股份有限公司 | A kind of measuring method of wind power generating set exchange pitch-controlled system backup power supply capacity |
| CN108333508A (en) * | 2017-12-22 | 2018-07-27 | 苏州恒美电子科技股份有限公司 | Power control system for electromechanical testing |
| CN112816870A (en) * | 2021-01-27 | 2021-05-18 | 臻驱科技（上海）有限公司 | Virtual motor based carrier synchronization system and method for frequency converter drag test platform and computer readable storage medium |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |