Three-phase motor power regulation

[Behemot]

Say I got three-phase motor, 3 power conductors+safe that means triangle wiring. So asynchronnous three-phase motor. I want to bring down it's power, can I use three capacitors of the same value in series, one per each phase? In theory, it should bring the same phase schift on all three phases so it should be OK. Am I right or missing something?

[budm]

Re: Three-phase motor power regulation

Some readings materials:
http://www.gwm4-3phase.com/uands/static1.htm
http://www.practicalmachinist.com/vb...ase-go-158528/
http://www.youtube.com/watch?v=6UcDM3hm0XM
http://www.nojolt.com/how-to-build-a...onverter.shtml
http://forums.finewoodworking.com/fi...low-three-phas

[Behemot]

Re: Three-phase motor power regulation

This is also a possibility to run on lower power, but can I run on 3 phases but with lower power other way than using some kind of frequency controller or using lower voltage (transformer)?

I found that it is possible to use switcher from triangle to star wiring which has square-root-from-3times lower voltage and current, efficiently 1/3 the power, for starting or reducing power.

But still, if there is constant phase schift on all 3 phases simultaneously in triangle, wouldn't it reduce power as well? Phase schift between phases would still be 120° so I guess probably not…