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Forum: Fossil Fuel Free

05-15-2018, 04:05 PM

Replies: 3,480

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Views: 916,703

Posted By MPaulHolmes

They call them economizers I think. I've never...

They call them economizers I think. I've never made my own economizer before though. Make sure you reduce Kp and Ki by the same proportion that you increase the voltage. So, if your test was at...

Forum: Fossil Fuel Free

05-09-2018, 12:47 PM

Replies: 3,480

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Views: 916,703

Posted By MPaulHolmes

Actually, do the run-pi-test2 first. That is a...

Actually, do the run-pi-test2 first. That is a locked rotor test (but you don't have to lock the rotor). It doesn't require knowledge of the rotor flux angle, so you don't need the angle offset for...

Forum: Fossil Fuel Free

05-07-2018, 06:50 PM

Replies: 3,480

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Views: 916,703

Posted By MPaulHolmes

Holy cow I missed a lot! Fortunately, I am now...

Holy cow I missed a lot! Fortunately, I am now unemployed, and can check here more often. haha.

For thingstodo:
You have to pretend that you are from the matrix... Remember how they see the...

Forum: Fossil Fuel Free

05-03-2018, 04:42 PM

Replies: 3,480

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Views: 916,703

Posted By thingstodo

Yup - I have the *MONSTER* ring cap. It was...

Yup - I have the *MONSTER* ring cap. It was discharged with the 5.6 ohm resistor when I realized my mistake. Thanks for the info that it is not polarized ... that's the big cost. The IGBTs are...

Forum: Fossil Fuel Free

05-02-2018, 01:58 PM

Replies: 3,480

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Views: 916,703

Posted By MPaulHolmes

I never use caps there but it wouldnt hurt if...

I never use caps there but it wouldnt hurt if they were sufficiently small capacitance. The chip has a noise rejection feature built into the QEI module.

Forum: Fossil Fuel Free

05-01-2018, 10:33 PM

Replies: 3,480

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Views: 916,703

Posted By MPaulHolmes

If the motor type is set to 1 (induction motor),...

If the motor type is set to 1 (induction motor), streaming poscnt won't do any good. if the motor type is like 3 (leaf nissan leaf), then stream-poscnt should work. What motor do you have? I am...

Forum: Fossil Fuel Free

04-30-2018, 01:02 PM

Replies: 3,480

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Views: 916,703

Posted By MPaulHolmes

Could you do: stream-poscnt 1 ...

Could you do:

stream-poscnt 1
data-stream-period 100

then slowly turn the motor shaft by hand to see if you get smoothly changing position. That will show that the encoder is working properly.

Forum: Fossil Fuel Free

04-26-2018, 06:14 PM

Replies: 3,480

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Views: 916,703

Posted By MPaulHolmes

The resolver ground wire is just an optional...

The resolver ground wire is just an optional thing if you have the resolver cable shielded. You send the shield to ground. It works fine though to just twist ex/!ex, and then twist sin/!sin, and...

Forum: Fossil Fuel Free

04-26-2018, 05:42 PM

Replies: 3,480

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Views: 916,703

Posted By MPaulHolmes

One thing you can do is, just guess (but get the...

One thing you can do is, just guess (but get the ex/!ex right) and then stream poscnt like this:

stream-poscnt 1
data-stream-period 100

then move the motor shaft by hand (or with a wrench or...

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