Converter and its operation monitoring method
An operation monitoring and converter technology, applied in the direction of instruments, measuring electrical variables, measuring resistance/reactance/impedance, etc., can solve the problem that the DC bus capacitor is not maintained in time, and achieve the effect of eliminating potential safety hazards.
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no. 1 example
[0030] Such as figure 1 As shown, the first embodiment of the present application provides a converter operation monitoring method, the converter operation monitoring method includes:
[0031] Step S11, during the precharging process of the DC bus capacitor of the converter, obtain the AC side voltage of the converter and the DC bus capacitor voltage;
[0032] Step S12. Determine the actual capacitance of the DC bus capacitor according to the acquired AC side voltage and DC bus capacitor voltage;
[0033] Step S13 , when the actual capacitance of the DC bus capacitor is less than a preset ratio of the rated capacitance of the DC bus capacitor, send out a warning message.
[0034] In one embodiment, the step of acquiring the AC side voltage and the DC bus capacitor voltage of the converter during the precharging process of the DC bus capacitor of the converter further includes:
[0035] When the converter is shut down or in standby and the voltage of the DC bus capacitor is l...
no. 2 example
[0056] Such as Figure 6 As shown, the second embodiment of the present application provides a converter, the converter includes a memory 21, a processor 22, and a converter stored in the memory 21 and operable on the processor 22 Operation monitoring program, when the converter operation monitoring program is executed by the processor 22, it is used to implement the following steps of the converter operation monitoring method:
[0057] During the precharging process of the DC bus capacitor of the converter, obtain the AC side voltage of the converter and the DC bus capacitor voltage;
[0058] determining the actual capacitance of the DC bus capacitor according to the obtained AC side voltage and the DC bus capacitor voltage;
[0059] When the actual capacitance of the DC bus capacitor is less than a preset ratio of the rated capacitance of the DC bus capacitor, an alarm message is issued.
[0060] When the converter operation monitoring program is executed by the processor ...
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