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Power electronic system operating condition simulation device with input LC filter

An LC filter and power electronics technology, applied in the direction of output power conversion device, AC power input conversion to DC power output, electrical components, etc., can solve the problem of affecting the simulation effect of three-phase asymmetrical conditions and losing zero-sequence components of voltage and other issues, to achieve the effects of improving accuracy and application range, suppressing switching frequency harmonics, and high compatibility

Active Publication Date: 2019-11-15
SHANGHAI JIAO TONG UNIV
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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

Method used

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  • Power electronic system operating condition simulation device with input LC filter
  • Power electronic system operating condition simulation device with input LC filter
  • Power electronic system operating 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 for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

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

[0034] figure 1 It is a schematic ...

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Abstract

The invention provides a power electronic system operating condition simulation device with an input LC filter, which includes an input LC filter, a power electronic converter, and an operating condition simulation controller, wherein the input LC filter is used for filtering the input voltage of the power electronic system operating condition simulation device; the power electronic converter is used for reflecting the current response of the simulated power electronic system operating condition at an electrical level; and the operating condition simulation controller is used to use the mathematical model of the simulated power electronic system operating condition and the current controller for related operation. The input LC filter used in the invention can enable the power electronic converter and an external circuit to be decoupled, neutral reference points are provided for voltage sampling, and on the premise of accurately simulating the electrical behavior characteristics of a specific operating condition, the compatibility and the flexibility of simulating different operating conditions by an operating condition simulation testing system are improved.

Description

Technical field [0001] The present invention relates to the field of power electronics technology, 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 use of electric energy in today's society tends to diversify. Among them, power electronic devices and equipment that 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. In the design, development and factory commissioning, the functional and reliability tests of the power electronic system under specific operating conditions can accurately describe the performance of the power electronic system and effectively determine the risk of failure that may occur during actual operation. Targeted guidance system design, thereby saving the long-term maintenance cost of the system....

Claims

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Application Information

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