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TMS320F28031: Generation 220V 50Hz Three phase Sine from 350VDC-600VDC Varing Supply

Part Number: TMS320F28031

Dear Ti,

My project is to generate 220V 50Hz inverter output From varing 350V-600V Input Supply.

For this i am Using "SVGEN_MF" for This Purpose. I have implemented a Equation in the Program to Maintain 220V 50Hz Inverter Out for DC Supply varing fro 350V to 600V.

I have connected an induction motor (testing purpose) at output, The Output Voltage is Maintained to 220V 50Hz , but when i increase my Supply Voltage from 350 to 600V, My Motor RPM changes 1500 to 1400.  Which i am unable to understand even if my Output Voltage and Freq is Maintained.

Please Guide.

Regards,

Venky.