Conduction electromagnetic interference simulation system for alternating-current motor inverter power circuit of electric car

A power loop and AC motor technology, applied in general control systems, control/regulation systems, instruments, etc., can solve problems such as prolonging the research and development cycle, failing to analyze the root cause and propagation path of conducted electromagnetic interference, and increasing product costs. To achieve the effect of saving experimental space

Active Publication Date: 2015-06-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

For the electromagnetic interference that occurs, it is usually suppressed by installing a filter outside the motor controller. This suppression method increases the cost of the product, prolongs...

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  • Conduction electromagnetic interference simulation system for alternating-current motor inverter power circuit of electric car

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Embodiment Construction

[0029] The present invention provides a method for realizing the conduction electromagnetic interference simulation system of the power circuit of the AC motor inverter. The technical scheme of the present invention will be described in detail in conjunction with the accompanying drawings by taking the power circuit of the 20kW three-phase AC motor inverter of an electric vehicle as an example below. .

[0030] Step 1: The five modules in the cable model simulation module 01: positive DC power cable 3D module 29, negative DC power cable 3D module 30, U-phase AC power cable 3D module 34, V-phase AC power line The cable 3D module 33 and the W-phase AC power cable module 32 are modeled and simulated in the cable studio of the electromagnetic compatibility simulation software CST, and the generated 3D models are shown in the attached image 3 shown. Five of the cables are round wires. The inside of the cable is a copper core with a diameter of 10mm, and the outside is covered by ...

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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 [0001] The invention relates to a conduction electromagnetic interference simulation system of a power circuit of an AC motor inverter of an electric vehicle, which is used for electromagnetic compatibility analysis of an electric vehicle motor drive system. Background technique [0002] The standard "GB / T 18387-2008 Limits and Measurement Methods of Electromagnetic Field Emission Intensity of Electric Vehicles Broadband 9kHz-30MHz" limits the electromagnetic field emission intensity of electric vehicles at 9kHz-30MHz. The AC motor drive system for electric vehicles is controlled by an inverter Power circuit, control circuit, chassis, radiator, cables and other parts, among which the main components of the inverter power circuit are power modules or components, such as PIM or IGBT. These power modules, such as IGBT, are in high-speed on-off mode during operation, and high-frequency dv / dt will be formed between its collector and emitter, thereby generating bro...

Claims

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Application Information

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IPC IPC(8): G05B17/02
Inventor 翟丽张新宇李广召董明承
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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