Modeling method for short time freewheeling reverse recovery of spike voltage of power diode
A technology of power diodes and reverse recovery, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems affecting the reliability of power electronic devices, hidden dangers of reliable operation of power electronic devices, breakdown failure of switching devices, etc. question
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[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. However, it does not constitute a limitation to the present invention, and is only used as an example. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.
[0048] The power diode reverse recovery peak voltage of the present invention all occurs in the bridge switching of high-power power electronic devices, such as figure 2 In the schematic diagram of the high-power electric energy conversion device shown, the two sets of switches in the same bridge are switched off alternately. Only when one set of switches is turned off, the power diodes in the other set of switches will turn on freewheeling to provide power discharge. circuit.
[0049] The initial condition of the modeling is that the freewheeling time of the power diode is on the order of hundreds of nan...
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