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How to control 3 phase motor using GT60N321 IGBT in full bridge configuration

Dhruv1253

Hello Everyone..! I am using GT60N321 Toshiba make IGBT to control 3 phase motor. I have used 6 IGBTs in full bridge configuration. Gate pulses are given from IR2101 IC (10Volts Output) which in turn driven from Arduino mega. 550Volts DC to be connected at collector terminal of IGBTs. We were expecting 400V AC output. But we are not getting full output as expected. Output is limited to 22V. Please suggest what could have gone wrong? Suggestion with regard to Schematic, Circuit diagram, Code will be appreciated. My circuit diagram for your reference has been attached. image

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  • I can't read the schematic clearly.

    There is something odd about the schematic. Two of the lower transistors do not appear to be connected to conduct current.

    Also the bridges seem intended to be half bridges on each phase, not full H-bridges, so the circuit won't output AC. At least not if I am reading the grounds properly.

    Maybe a larger discussion is needed to understand all the issues with designing such a circuit at these voltages.

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  • I can't read the schematic clearly.

    There is something odd about the schematic. Two of the lower transistors do not appear to be connected to conduct current.

    Also the bridges seem intended to be half bridges on each phase, not full H-bridges, so the circuit won't output AC. At least not if I am reading the grounds properly.

    Maybe a larger discussion is needed to understand all the issues with designing such a circuit at these voltages.

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