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Home made 3-Phase Variable Frequency sine wave Drive

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Nice work.
If you change direction at high speed, does it manage automatically by reducing speed and then changing direction with soft start? I dont see this test in your video!
 

its has a Protection dude, if u change direction switch at high RPM it would not take any action first u have to reduce Speed, Direction switch is effective only & only if frequency is with in 10 frequency Range,
my drive is working Great no prblems dude, the motor has high torque even at 5Hz u can't hold its shaft with hands.

the rated RPM of this Motor is 900RPM @ 50Hz, but when i provide 215Hz to the Motor the RPM reaches 3870RPM & the motor becomes Wild,

the Drive has Feedback current Control to keep the Currents with in the limit + Soft Start & Soft Stop etc . . .
 

i have displayed just one phase on oscilloscope because i don't have 3 channels isolated scope, i will try it with three isolation transformers (star to Y) i think then an ordinary 3 channel scope would do the job
 

so , it is much i can't find,but i help me a lot from the video~
 

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