CN104698860A - Conduction electromagnetic interference simulation system for alternating-current motor inverter power circuit of electric car - Google Patents
Conduction electromagnetic interference simulation system for alternating-current motor inverter power circuit of electric car Download PDFInfo
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Abstract
The invention relates to a conduction electromagnetic interference simulation system for an alternating-current motor inverter power circuit of an electric car. The system comprises a cable model simulation module, an inverter power circuit simulation module and a power circuit signal acquisition module. The system is mainly used for analyzing the electric car motor drive system conduction electromagnetic interference production mechanism and propagation path. A cable model simulation module is established under electromagnetic compatibility cable modeling and simulation software, an inverter power circuit simulation module is established under electromagnetic compatibility high-frequency circuit modeling and simulation software, and a power circuit control signal acquisition module is established under mathematical simulation software. During simulation, the power circuit control signal acquisition module inputs control signals to the inverter power circuit simulation module to control the operation of the inverter, and a voltage monitoring module and a current monitoring module of the inverter power circuit simulation module are used for acquiring the power circuit voltage and current.
Description
Technical field
The present invention relates to a kind of Conducted Electromagnetic Interference analogue system of Electric Vehicle's Alternating motor inverter loop of power circuit, for electric automobile motor drive system electromagnetic compatibility analysis.
Background technology
Standard " limit value of the electromagnetic field emissions intensity of GB/T 18387-2008 electric vehicle and measuring method broadband 9kHz ~ 30MHz " has made restriction to the electromagnetic field emissions intensity of electric automobile 9kHz-30MHz, AC machine drive system used for electric vehicle is made up of a few parts such as inverter power loop, control circuit, cabinet, heating radiator, cables, wherein the critical piece in inverter power loop is power model or components and parts, as PIM or IGBT etc.These power models, such as IGBT, be operationally in high speed break-make pattern, can form high frequency dv/dt between its collector and emitter, thus create broadband electromagnetic interference (EMI), frequency range exceedes tens of megahertz.Along with motor is to the future development of light littleization, high efficiency, also more and more higher to the requirement of the switching speed of power model, this electromagnetic interference (EMI) just making power model produce is more strong, these electromagnetic interference (EMI) affect the normal work of vehicle electronics parts by conduction and radiation two kinds of circulation ways, motor side shaft current may be caused excessive for system self, make damage of the bearing or burn out motor insulating layer, also can affect the normal work of other vehicle electronic devices by various ways such as cable, vehicle frame, radiation.Therefore the electromagnetic interference (EMI) that motor driven systems produces not only is related to self functional reliability, and can affect the Electro Magnetic Compatibility of car load and adjacent car, safe operation ability and functional reliability.So study the mechanism of production of this electromagnetic interference (EMI) and the development of suppressing method to electric automobile has practical significance.
The electromagnetic interference (EMI) of electric automobile motor drive system is divided into Conducted Electromagnetic Interference and Radiative EMI, the mode of interference first with Conduction Interference on system components and parts, web member and cable that power device high speed break-make in inverter power loop produces is propagated, because power length of cable used for electric vehicle is longer, Conduction Interference externally can produce radiation by DC dynamo cable and motor three-phase alternating current power cable, and therefore Conduction Interference is main interference source.
The electromagnetic interference (EMI) experimentally carrying out test macro is adopted in the analysis of the current Conducted Electromagnetic Interference to Electric Vehicle's Alternating motor inverter loop of power circuit usually, by installing artificial mains network, use the Conduction Interference voltage of receiver or spectrum analyzer test macro.For the electromagnetic interference (EMI) occurred, be typically employed in the outside method installing wave filter additional of electric machine controller to be suppressed, this suppressing method add product cost, extend the R&D cycle, and root and the route of transmission of Conducted Electromagnetic Interference generation can not be analyzed well, more cannot carry out analysis and inhibition to the Conducted Electromagnetic Interference that electric machine controller inside produces.
Summary of the invention
For above Problems existing, the present invention carries out modeling and simulating by the Conducted Electromagnetic Interference circuit of compatibility software to Electric Vehicle's Alternating motor inverter loop of power circuit, by controlling power model work in real time, analyze root and the travel path of the Conducted Electromagnetic Interference generation on electric machine controller, cable, motor, and the method for suppression Conducted Electromagnetic Interference of can further analyzing and researching.
Technical scheme: a kind of Conducted Electromagnetic Interference analogue system of Electric Vehicle's Alternating motor inverter loop of power circuit comprises cable model emulation module, inverter power loop simulation module, loop of power circuit control signal acquisition module three part, as shown in Figure 1.
Cable model emulation module 01 as shown in Figure 2, comprises positive DC power cable 3D module 30, negative DC power cable 3D module 31, W phase change flow line of force cable 3D module 32, V phase change flow line of force cable 3D module 33, U phase change flow line of force cable 3D module 34.
Inverter power loop simulation module 02 as shown in Figure 2, comprising: power module 1, positive pole artificial mains network module 2, negative pole artificial mains network module 3, positive DC power wiring module 4, negative DC power wiring module 5, power model positive wire inductor module 6, power model negative wire inductor module 7, inverter power module 8, filter capacitor module 9, U phase change flow power wiring module 10, V phase change flow power wiring module 11, W phase change flow power wiring module 12, motor module 13, motor module ground capacitance module 14, power control module ground capacitance module 15, power model positive terminal A ground capacitance module 16, power model negative pole end B ground capacitance module 17, the earth module 18, positive pole artificial mains network voltage monitoring module 19, negative pole artificial mains network voltage monitoring module 20, positive DC power cable current monitoring module 21, negative DC power cable current monitoring module 22, DC dynamo cable common mode current monitoring modular 23, U phase change flow line of force cable current monitoring module 24, V phase change flow line of force cable current monitoring module 25, W phase change flow line of force cable current monitoring module 26, three-phase alternating current power cable common mode current monitoring modular 27.
Loop of power circuit control signal acquisition module 03 as shown in Figure 2, comprises control signal input port module 28 and loop of power circuit control signal data module 29.
The connected mode of cable model emulation module 01, inverter power loop simulation module 02, loop of power circuit control signal acquisition module 03 is:
Positive DC power cable 3D module 30 in cable model emulation module 01 generates the positive DC power wiring module 4 in inverter power loop simulation module 02 by collaborative simulation path N28, negative DC power cable 3D module 31 in cable model emulation module 01 generates the negative DC power wiring module 5 in inverter power loop simulation module 02 by collaborative simulation path N29, W phase change flow power wiring module 32 in cable model emulation module 01 generates the W phase change flow power wiring module 12 in inverter power loop simulation module 02 by collaborative simulation path N30, V phase change flow line of force cable 3D module 33 in cable model emulation module 01 generates the V phase change flow power wiring module 11 in inverter power loop simulation module 02 by collaborative simulation path N31, U phase change flow line of force cable 3D module 33 in cable model emulation module 01 generates the U phase change flow power wiring module 10 in inverter power loop simulation module 02 by collaborative simulation path N32.
The input end of the control signal input port module 28 in loop of power circuit control signal acquisition module 03 is connected with loop of power circuit control signal data module 29 by connecting line N33, and the output terminal of control signal input port module 28 is connected with the control end C of inverter power module 8 by signal wire N34.
As shown in Figure 2, the connected mode of inverter power loop simulation module 02 is:
The positive pole of power module 1 is connected with the input end of positive DC power wiring module 4 by power line N1, the negative pole of power module 1 is connected with the input end of negative DC power wiring module 5 by power line N2, the output terminal of positive DC power wiring module 4 is connected with the input end of power model positive wire inductor module 6 by power line N7, the output terminal of negative DC power wiring module 5 is connected with the input end of power model negative wire inductor module 7 by power line N8, the electrode input end of filter capacitor module 9 is connected with the input end of power model positive wire inductor module 6 by connecting line N5, the cathode output end of filter capacitor module 9 is connected with the input end of power model negative wire inductor module 7 by connecting line N6, the output terminal of power model positive wire inductor module 6 is connected with the positive terminal A of inverter power module 8 by power line N9, the output terminal of power model negative wire inductor module 7 is connected with the negative pole end B of inverter power module 8 by power line N10, the U phase output terminal of inverter power module 8 is connected with the input end of U phase change flow power wiring module 10 by power line N11, the V phase output terminal of inverter power module 8 is connected with the input end of V phase change flow power wiring module 11 by power line N12, the W phase output terminal of inverter power module 8 is connected with the input end of W phase change flow power wiring module 12 by power line N13, the output terminal of U phase change flow power wiring module 10 is connected with the U phase input end of motor module 13 by power line N14, the output terminal of V phase change flow power wiring module 11 is connected with the V phase input end of motor module 13 by power line N15, the output terminal of W phase change flow power wiring module 12 is connected with the W phase input end of motor module 13 by power line N16.Holding over the ground of motor module 13 is connected with the input end of motor module ground capacitance module 14 by connecting line N17, the output terminal of motor module ground capacitance module 14 is connected with the earth module 18 by connecting line N18, holding over the ground of inverter power module 8 is connected with the input end of power control module ground capacitance module 15 by connecting line N19, the output terminal of power control module ground capacitance module 15 is connected with the earth module 18 by connecting line N20, the positive terminal A of inverter power module 8 is connected with the input end of power model positive terminal A ground capacitance module 16 by connecting line N21, the output terminal of power model positive terminal A ground capacitance module 16 is connected with the earth module 18 by connecting line N22, the negative pole end B of inverter power module 8 is connected with the input end of power model negative pole end B ground capacitance module 17 by connecting line N23, the output terminal of power model negative pole end B ground capacitance module 17 is connected with the earth module 18 by connecting line N24.The input end of positive pole artificial mains network module 2 is connected with power line N1 by connecting line N3, the output terminal of positive pole artificial mains network module 2 is connected with the earth module 18 by connecting line N25, N27, the input end of negative pole artificial mains network module 3 is connected with power line N2 by connecting line N4, and the output terminal of negative pole artificial mains network module 3 is connected with the earth module 18 by connecting line N26, N27.It is inner that positive pole artificial mains network voltage monitoring module 19 is connected on positive pole artificial mains network module 2, it is inner that negative pole artificial mains network voltage monitoring module 20 is connected on negative pole artificial mains network module 3, positive DC power cable current monitoring module 21 is connected on power line N1, negative DC power cable current monitoring module 22 is connected on power line N2, DC dynamo cable common mode current monitoring modular 23 is connected on connecting line N27, U phase change flow line of force cable current monitoring module 24 is connected on power line N14, V phase change flow line of force cable current monitoring module 25 is connected on power line N15, W phase change flow line of force cable current monitoring module 26 is connected on N26, three-phase alternating current power cable common mode current monitoring modular 27 is connected on connecting line N17.
The simulation process that the present invention relates to the Conducted Electromagnetic Interference analogue system of Electric Vehicle's Alternating motor inverter loop of power circuit is as follows:
The first step: as shown in Figure 2, five modules by cable model emulation module 01: positive DC power cable 3D module 30, negative DC power cable 3D module 31, W phase change flow line of force cable 3D module 32, V phase change flow line of force cable 3D module 33, the modeling in Emulation of EMC software cable operating room of U phase change flow line of force cable 3D module 34, by collaborative simulation path N28, N29, N30, N31, N32 generates the positive DC power wiring module 4 in corresponding inverter power loop simulation module 02 in Emulation of EMC Software for Design operating room, negative DC power wiring module 5, W phase change flow power wiring module 12, V phase change flow power wiring module 11, U phase change flow power wiring module 10.
Second step: signal loop of power circuit control signal data module 29 in loop of power circuit control signal acquisition module 03 collected is input in control signal input port module 28 by connecting line N33, after data processing, signal is inputted the control end C of inverter power module 8 by signal wire N34.
3rd step: as shown in Figure 2, inverter power loop simulation module 02 is built in Emulation of EMC Software for Design operating room, voltage is provided by power module 1, by DC dynamo line supply inverter power module 8, DC inverter is powered to motor module 13 by ac power line after alternating current by inverter power module 8.
4th step: carry out associative simulation to cable operating room and design studio in Emulation of EMC software, runs the Conducted Electromagnetic Interference analogue system of Electric Vehicle's Alternating motor inverter loop of power circuit.
5th step: after simulation process terminates, the DC bus positive pole conduction voltage in simulation process is recorded by positive pole artificial mains network voltage monitoring module 19, the DC bus negative pole conduction voltage in simulation process is recorded by negative pole artificial mains network voltage monitoring module 20, the DC bus positive pole conduction current in simulation process is recorded by positive DC power cable current monitoring module 21, the DC bus negative pole conduction current in simulation process is recorded by negative DC power cable current monitoring module 22, the DC dynamo line common mode current in simulation process is recorded by DC dynamo cable common mode current monitoring modular 23, the U phase change flow power cable current in simulation process is recorded by U phase change flow line of force cable current monitoring module 24, the V phase change flow power cable current in simulation process is recorded by V phase change flow line of force cable current monitoring module 25, the W phase change flow power cable current in simulation process is recorded by W phase change flow line of force cable current monitoring module 26, the three-phase alternating current power cable common mode current in simulation process is recorded by three-phase alternating current power cable common mode current monitoring modular 27.
Advantage effect:
The present invention utilizes the Conducted Electromagnetic Interference circuit of Emulation of EMC software to Electric Vehicle's Alternating motor inverter loop of power circuit to carry out modeling, achieves the Conducted Electromagnetic Interference emulation of Electric Vehicle's Alternating motor inverter loop of power circuit.Utilize the present invention, can Predicting and analysis electric automobile motor drive system Conducted Electromagnetic Interference, save the resources such as the experimental site needed for object test, instrument and equipment and personnel, for electric automobile motor drive system Electromagnetic Compatibility Prediction provides a kind of effective method.
Accompanying drawing explanation
Accompanying drawing 1 general structure schematic diagram of the present invention
The Conducted Electromagnetic Interference emulate system architecture figure of accompanying drawing 2 Electric Vehicle's Alternating motor inverter loop of power circuit
The 3D illustraton of model of accompanying drawing 3 five cables in CST cable operating room
The Conducted Electromagnetic Interference realistic model figure of accompanying drawing 4 Electric Vehicle's Alternating motor inverter loop of power circuit
Accompanying drawing 5 DC dynamo line positive pole conduction voltage results figure
Accompanying drawing 6 DC dynamo line common mode current result figure
Embodiment
The invention provides a kind of implementation method of the Conducted Electromagnetic Interference analogue system in alternating current generator inverter power loop, below for electric automobile 20kW three phase alternating current motor inverter power loop, by reference to the accompanying drawings technical scheme of the present invention is described in detail.
The first step: five modules by cable model emulation module 01: positive DC power cable 3D module 29, negative DC power cable 3D module 30, U phase change flow line of force cable 3D module 34, V phase change flow line of force cable 3D module 33, W phase change flow power wiring module 32 modeling and simulating in the cable operating room of Emulation of EMC software CST, the 3D model of generation as shown in Figure 3.Wherein five cables are round line, and cable inner is copper core, and copper core diameter is 10mm, outside coated by rubber ring.Two DC dynamo line lengths are 1.5m, and three ac power line lengths are 0.8m.Five cable modelings in the cable operating room of Emulation of EMC software ComputerSimulation Technology (CST), corresponding positive DC power wiring module, negative DC power wiring module, U phase change flow power wiring module, V phase change flow power wiring module and W phase change flow power wiring module is generated at CST design studio, as shown in Figure 4 by collaborative simulation path.
Second step: the loop of power circuit control signal data module 29 in loop of power circuit control signal acquisition module 03 is equivalent to IGBT control end signal data in the experiment that oscillograph collects, this signal data is input in control signal input port module 28, be converted into after ASCII character through data processing, be input to the break-make of IGBT in control inverter power model in signal source 1,2,3,4,5,6 as shown in Figure 4.
3rd step: as shown in Figure 4, inverter power loop simulation module 02 is built in CST design studio, wherein supply voltage is 288V, positive pole artificial mains network module 2 is equivalent to electric capacity C1=0.47nF and resistance R1=50 Ω and connects, negative pole artificial mains network module 3 is equivalent to electric capacity C2=0.47nF and resistance R2=50 Ω and connects, filter capacitor module 9 is electric capacity C3=50 μ F, and the IGBT that inverter power module 8 is STGW39NC60VD by six models forms, and numbering is S1 respectively, S2, S3, S4, S5, S6, power model positive wire inductor module 6 is equivalent to inductance L 1=5nH, L2=5nH, L3=5nH, power model negative wire inductor module 7 is equivalent to inductance L 4=5nH, L5=5nH, L6=5nH, power model positive terminal A ground capacitance module 16 is equivalent to electric capacity C4=133pF, C5=133pF, C6=133pF, power model negative pole end B ground capacitance module 17 is equivalent to electric capacity C7=35pF, C8=35pF, C9=35pF, power control module ground capacitance module 15 is equivalent to electric capacity C10=133pF, C11=133pF, C12=133pF, motor module 13 is 20kW permagnetic synchronous motor, is equivalent to three inductance L 7=2mH, L8=2mH, L9=2mH Y-connection forms.Motor module ground capacitance module 14 is electric capacity C13=200pF.288V voltage supplies six IGBT by DC dynamo line, after reversals, alternating current is passed through ac power line to feeding electric motors.The corresponding probe P1 of positive pole artificial mains network voltage monitoring module 19, the corresponding probe P2 of negative pole artificial mains network voltage monitoring module 20, the corresponding probe P3 of positive DC power cable current monitoring module 21, the corresponding probe P4 of negative DC power cable current monitoring module 22, the corresponding probe P5 of DC dynamo cable common mode current monitoring modular 23, the corresponding probe P6 of U phase change flow line of force cable current monitoring module 24, the corresponding probe P7 of V phase change flow line of force cable current monitoring module 25, the corresponding probe P8 of W phase change flow line of force cable current monitoring module 26, the corresponding probe P9 of three-phase alternating current power cable common mode current monitoring modular 27.
4th step: carry out associative simulation to cable operating room and design studio in CST, runs the Conducted Electromagnetic Interference analogue system of Electric Vehicle's Alternating motor inverter loop of power circuit.
5th step: obtain DC dynamo line by probe P1 after emulation terminates and conduct cathode voltage result as shown in Figure 5, obtain DC dynamo line common mode current result as shown in Figure 6 by probe P5.
Claims (1)
1. a Conducted Electromagnetic Interference analogue system for Electric Vehicle's Alternating motor inverter loop of power circuit, is characterized in that: cable model emulation module, inverter power loop simulation module, loop of power circuit control signal acquisition module;
Cable model emulation module 01 comprises positive DC power cable 3D module 30, negative DC power cable 3D module 31, W phase change flow line of force cable 3D module 32, V phase change flow line of force cable 3D module 33, U phase change flow line of force cable 3D module 34;
Inverter power loop simulation module 02 comprises: power module 1, positive pole artificial mains network module 2, negative pole artificial mains network module 3, positive DC power wiring module 4, negative DC power wiring module 5, power model positive wire inductor module 6, power model negative wire inductor module 7, inverter power module 8, filter capacitor module 9, U phase change flow power wiring module 10, V phase change flow power wiring module 11, W phase change flow power wiring module 12, motor module 13, motor module ground capacitance module 14, power control module ground capacitance module 15, power model positive terminal A ground capacitance module 16, power model negative pole end B ground capacitance module 17, the earth module 18, positive pole artificial mains network voltage monitoring module 19, negative pole artificial mains network voltage monitoring module 20, positive DC power cable current monitoring module 21, negative DC power cable current monitoring module 22, DC dynamo cable common mode current monitoring modular 23, U phase change flow line of force cable current monitoring module 24, V phase change flow line of force cable current monitoring module 25, W phase change flow line of force cable current monitoring module 26, three-phase alternating current power cable common mode current monitoring modular 27,
Loop of power circuit control signal acquisition module 03 comprises control signal input port module 28 and loop of power circuit control signal data module 29;
The connected mode of cable model emulation module 01, inverter power loop simulation module 02, loop of power circuit control signal acquisition module 03 is:
Positive DC power cable 3D module 30 in cable model emulation module 01 generates the positive DC power wiring module 4 in inverter power loop simulation module 02 by collaborative simulation path N28, negative DC power cable 3D module 31 in cable model emulation module 01 generates the negative DC power wiring module 5 in inverter power loop simulation module 02 by collaborative simulation path N29, W phase change flow power wiring module 32 in cable model emulation module 01 generates the W phase change flow power wiring module 12 in inverter power loop simulation module 02 by collaborative simulation path N30, V phase change flow line of force cable 3D module 33 in cable model emulation module 01 generates the V phase change flow power wiring module 11 in inverter power loop simulation module 02 by collaborative simulation path N31, U phase change flow line of force cable 3D module 33 in cable model emulation module 01 generates the U phase change flow power wiring module 10 in inverter power loop simulation module 02 by collaborative simulation path N32,
The input end of the control signal input port module 28 in loop of power circuit control signal acquisition module 03 is connected with loop of power circuit control signal data module 29 by connecting line N33, and the output terminal of control signal input port module 28 is connected with the control end C of inverter power module 8 by signal wire N34;
The connected mode of inverter power loop simulation module 02 is:
The positive pole of power module 1 is connected with the input end of positive DC power wiring module 4 by power line N1, the negative pole of power module 1 is connected with the input end of negative DC power wiring module 5 by power line N2, the output terminal of positive DC power wiring module 4 is connected with the input end of power model positive wire inductor module 6 by power line N7, the output terminal of negative DC power wiring module 5 is connected with the input end of power model negative wire inductor module 7 by power line N8, the electrode input end of filter capacitor module 9 is connected with the input end of power model positive wire inductor module 6 by connecting line N5, the cathode output end of filter capacitor module 9 is connected with the input end of power model negative wire inductor module 7 by connecting line N6, the output terminal of power model positive wire inductor module 6 is connected with the positive terminal A of inverter power module 8 by power line N9, the output terminal of power model negative wire inductor module 7 is connected with the negative pole end B of inverter power module 8 by power line N10, the U phase output terminal of inverter power module 8 is connected with the input end of U phase change flow power wiring module 10 by power line N11, the V phase output terminal of inverter power module 8 is connected with the input end of V phase change flow power wiring module 11 by power line N12, the W phase output terminal of inverter power module 8 is connected with the input end of W phase change flow power wiring module 12 by power line N13, the output terminal of U phase change flow power wiring module 10 is connected with the U phase input end of motor module 13 by power line N14, the output terminal of V phase change flow power wiring module 11 is connected with the V phase input end of motor module 13 by power line N15, the output terminal of W phase change flow power wiring module 12 is connected with the W phase input end of motor module 13 by power line N16, holding over the ground of motor module 13 is connected with the input end of motor module ground capacitance module 14 by connecting line N17, the output terminal of motor module ground capacitance module 14 is connected with the earth module 18 by connecting line N18, holding over the ground of inverter power module 8 is connected with the input end of power control module ground capacitance module 15 by connecting line N19, the output terminal of power control module ground capacitance module 15 is connected with the earth module 18 by connecting line N20, the positive terminal A of inverter power module 8 is connected with the input end of power model positive terminal A ground capacitance module 16 by connecting line N21, the output terminal of power model positive terminal A ground capacitance module 16 is connected with the earth module 18 by connecting line N22, the negative pole end B of inverter power module 8 is connected with the input end of power model negative pole end B ground capacitance module 17 by connecting line N23, the output terminal of power model negative pole end B ground capacitance module 17 is connected with the earth module 18 by connecting line N24, the input end of positive pole artificial mains network module 2 is connected with power line N1 by connecting line N3, the output terminal of positive pole artificial mains network module 2 is by connecting line N25, N27 is connected with the earth module 18, the input end of negative pole artificial mains network module 3 is connected with power line N2 by connecting line N4, the output terminal of negative pole artificial mains network module 3 is by connecting line N26, N27 is connected with the earth module 18, it is inner that positive pole artificial mains network voltage monitoring module 19 is connected on positive pole artificial mains network module 2, it is inner that negative pole artificial mains network voltage monitoring module 20 is connected on negative pole artificial mains network module 3, positive DC power cable current monitoring module 21 is connected on power line N1, negative DC power cable current monitoring module 22 is connected on power line N2, DC dynamo cable common mode current monitoring modular 23 is connected on connecting line N27, U phase change flow line of force cable current monitoring module 24 is connected on power line N14, V phase change flow line of force cable current monitoring module 25 is connected on power line N15, W phase change flow line of force cable current monitoring module 26 is connected on N26, three-phase alternating current power cable common mode current monitoring modular 27 is connected on connecting line N17.
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