Power module fault monitoring system and method, and frequency converter
A power module and fault monitoring technology, which is applied in the field of power modules, can solve problems such as the inability to accurately judge power module faults and low maintenance efficiency, and achieve the effects of practical control methods, protection safety, and improved maintenance efficiency
Active Publication Date: 2021-04-13
RUKING EMERSON CLIMATE TECH SHANGHAI CO LTD
View PDF14 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a power module fault monitoring system, method and frequency converter, which is used to solve the problem that the prior art cannot accurately judge the fault of the power module, resulting in low maintenance efficiency
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0043] The implementation of the present invention is described below through specific 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. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0044] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and num...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a power module fault monitoring system and method, and a frequency converter. The system comprises a control module, a driving module, a power module, an input signal sampling circuit and an output signal sampling circuit. The control module is connected with the driving module and used for outputting a pulse signal to the driving module so as to start the driving module; the input signal sampling circuit is connected with the driving module, and the input signal sampling circuit and the driving module are jointly connected to the power module for collecting input signals of the power module; the output signal sampling circuit is connected with the power module and is used for acquiring an output signal of the power module; and the input signal sampling circuit and the output signal sampling circuit are connected with the control module and are used for feeding back the input signal and the output signal to the control module respectively. Whether the power module fails or not is judged by monitoring the input / output signals of the power module, and the failure part is accurately judged so that maintenance efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of power modules, and in particular relates to a power module fault monitoring system, method and frequency converter. Background technique [0002] The power module is the core component of the inverter, which is divided into IPM and PIM modules. It usually works under high-speed switching and high-current conditions, so it is prone to failure. The damage of the power module mainly includes bad internal drive circuits and damage to the power switching device IGBT, etc.; There are many reasons for the damage of the power module. It may be that the power module itself is bad, it may be a problem with the control signal, or it may be the overcurrent caused by the short circuit of the load. [0003] At present, the power module mainly uses the detection of output current as the input signal for protection judgment. It is impossible to accurately judge whether the power module itself is defective, the input cont...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01R31/42
CPCG01R31/42
Inventor 游业斌
Owner RUKING EMERSON CLIMATE TECH SHANGHAI CO LTD