Unbalanced current detection device for IGBT circuit, driver and method for controlling IGBT circuit
A current detection device, detection device technology, applied in the direction of measuring device, measuring current/voltage, output power conversion device, etc., can solve the problems of long reaction time, oversized, expensive, etc., and achieve simplified calculation and judgment, short Effects of reaction time, simplification of calculation, and judgment of potential direction
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[0036] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.
[0037] figure 1 An IGBT circuit 100 is shown, which may be, for example, an IGBT circuit in a driver for driving a large load with a large current, such as a motor of an electric vehicle or a UPS or an inductor. Such as figure 1 As shown, in order to obtain a larger output current, usually multiple IGBT modules are connected in parallel according to the actual driven load. figure 1 Only an IGBT circuit 100 with two parallel-connected IGBT modules 10 ; 20 is shown as an example, wherein each IGBT module 10 ; 20 in turn includes two series-connected IGBTs. The node 13 ; 23 between the two IGBTs 12 , 14 ; 22 ; 24 (that is, the connection point between the emitter and the collector of the two IGBTs) is the output terminal 13 ; 23 o...
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