Simulation calculation method and system for inverter switching element loss

A switching element, simulation calculation technology, applied in the direction of calculation, electrical components, control systems, etc., can solve the problems of ignoring the non-linear characteristics of the motor, non-ideal switching, unable to join complex control systems, etc., achieve good test results, improve test efficiency, The effect of accurate simulation value

Pending Publication Date: 2021-02-09
TONGJI UNIV
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Problems solved by technology

[0004] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of simulation calculation method and system of inverter switch element loss, be used to solve the control of the motor when emphasizing on the motor simulation based on Simulink in the prior art Ignore the nonlinear characteristics of the motor itself and the characteristics of the IGBT non-ideal switch, and the technical problems that the electromagnetic simulation process of Maxwell software cannot be added to the complex control system

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  • Simulation calculation method and system for inverter switching element loss
  • Simulation calculation method and system for inverter switching element loss
  • Simulation calculation method and system for inverter switching element loss

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[0037] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0038] see Figure 1-8 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, so that only the components related to the present invention are shown in the diagrams rather than the number, shape and Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the component...

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Abstract

The invention provides a simulation calculation method and system for inverter switching element loss. The method comprises the steps of respectively establishing a motor control algorithm model, a switching element and inverter model and a motor finite element mode, integrating the motor control algorithm model, the switching element and inverter model and the motor finite element model to establish a joint simulation model of motor control, and performing joint simulation, and collecting related data to calculate the loss of the switching element. The accuracy and reliability of the joint simulation model can be improved, and the loss of the inverter switching element can be calculated.

Description

technical field [0001] The invention relates to the technical field of electric power operation analysis and simulation technology, in particular to a simulation calculation method and system for switching element loss of an inverter. Background technique [0002] The thermal failure of the inverter switching unit IGBT (or other types of switching elements) module is an important reason affecting its reliability. About 60% of device failures are caused by temperature. It can be seen that the temperature has an impact on the reliability of the IGBT module. The impact is huge, and the IGBT temperature has an inseparable relationship with its loss, so the research on the simulation calculation of the IGBT loss is of great significance. [0003] At present, there are few studies on the co-simulation of motor inverters, and most of them use Simulink to study the motor control algorithm. However, there is no physical model of the motor and IGBT switch in the Simulink device librar...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/367H02M7/48H02P27/06G06F119/02
CPCG06F30/23G06F30/367H02M7/48H02P27/06G06F2119/02
Inventor 朱元张幸福肖明康石其辉陆科吴志红
Owner TONGJI UNIV
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