Power electronic system working condition simulation device with input lc filter

An LC filter and power electronics technology, applied in the output power conversion device, the conversion of AC power input to DC power output, electrical components and other directions, which can solve the problem of affecting the simulation effect of three-phase asymmetric working conditions and loss of voltage zero-sequence components. and other problems, to achieve the effect of improving accuracy and scope of application, suppressing switching frequency harmonics, and high compatibility

Active Publication Date: 2021-03-30
SHANGHAI JIAO TONG UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3) For a three-phase system, when the output filter has no neutral point, the sampling of the input voltage needs to rely on the conversion of the line voltage sampling, which will lose the zero-sequence component of the voltage and affect the simulation effect of the three-phase asymmetric working condition

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  • Power electronic system working condition simulation device with input lc filter
  • Power electronic system working condition simulation device with input lc filter
  • Power electronic system working condition simulation device with input lc filter

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0033] An embodiment of the present invention provides a power electronic system working condition simulation device with an input LC filter, which can suppress the mid- and high-frequency harmonics of the input voltage of the AC electrical port of the power electronic system working condition simulation device through the input LC filter. wave, and decouple the power electronic system working condition simulation device from the connected external circuit.

[0034] figure 1 A schematic diagram of a po...

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Abstract

The invention provides a power electronic system working condition simulation device with an input LC filter, including: an input LC filter, a power electronic converter, and a working condition simulation controller; wherein, the input LC filter is used for power electronics The input voltage of the condition simulation device is filtered; the power electronic converter is used to reflect the current response of the simulated power electronic system working condition at the electrical level; the working condition simulation controller is used to use the mathematical model and current of the simulated power electronic system working condition The controller performs related operations. The input LC filter used in the present invention can decouple the power electronic converter from the external circuit, and provide a neutral reference point for voltage sampling. On the premise of accurately simulating the electrical behavior characteristics of a specific working condition, the working condition is improved. The compatibility and flexibility of the simulation test system when simulating different working conditions.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a power electronics system operating condition simulation device with an input LC filter. Background technique [0002] With the development of electrical engineering technology, the utilization of electric energy in today's society tends to be diversified. Among them, power electronic devices and equipment, which play a key role in AC-DC power conversion, are also facing the challenges of higher and higher operating power levels and more and more complex application conditions. During design, R&D and factory commissioning, the functional and reliability tests of the power electronic system under specific operating conditions can truly describe the performance of the power electronic system and effectively determine the possible failure risks during actual operation. Guide the system design in a targeted manner, thereby saving the long-term maintenance cost of the syst...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02M7/219H02M1/12H02M1/14
CPCH02M1/126H02M1/14H02M7/219H02M1/0012
Inventor马柯宋宇博
OwnerSHANGHAI JIAO TONG UNIV