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Hi Guys
I have a question about space vector modulation implementation. I'm reading a code for ST MC workbench designed to run SVPWM. there is calculations for sector identification in space vector that I can't get it's idea completely. if someone analyzed these vector calculations please help...
thanks tony. yes I neglected that this IC is not a High side current sense amplifier. I've corrected the issues and it's working properly now. thanks for your help
Hi guys. I faced a problem while I was trying to read current by a shunt resistor and HCPL7840 opamp. the voltage at each of the hcpl7840 input pins is 36V(my supply voltage is 36V). but when I turn my supply on, HCPL punched and burnt terribly. I've tried this with 2 other hcpls but the result...
For reading with resistive devide maybe yes. but for reading with opamps, definately it usses that directly in control algorithm. because by cutting the one of the opamp inputs, the motor stops and PWM disturbes. I will attach the opamp output here.
Hi Guys, I'm working on a EV motor control project, the motor type is IPMSM, on a traditional Drive we have found that it measures the motor voltage feedbacks( middle point of inverter legs) by two methods:
1.Analog method: through resistive voltage divider +LPF+ ADC( MCU input);
2.Digital...
Hi everybody
I have a problem with a measurement( impedance analyzer device). it has some components in parallel with it's probes. one of them is with the marking of z1 that is similar to a ferrite bead but when I'm measuring that with a LCR meter just it shows near 4pf capacitive properties and...
It's for better loading elimination on the microcontroller
If we connect the common node of resistors to the r32, because of R31 we have a little loading effect. And this has 4 opamps so it's better to use one of them as a buffer instead of taking it away
1609094803
Thanks for your attention my...
I saw the resistors with a magnifier again.
The corrected values are:
R22=1Mohms
R21=499Kohms
R20=249Kohms
R19=124Kohms
R18=62Kohms
R26=31.6Kohms
R27=15.8Kohms
R25=7.87Kohms
Now it makes sense for you
The only remain problem for me is that its output is connected to the output of an analog mux...
this equipment has a capacitance measurement concept so it can be true.
the value of the resistors are:
R22=31ohms
R21=68ohms
R20=39ohms
R19=10ohms
R18=62kohms
R26=31.6Kohms
R27=15.8Kohms
R25=7.87Kohms
Hi friends
I have faced an unfamiliar opamp circuit that I'll attach its diagram too. It's a unit gain opamp circuit who connected to the common node resistors that other side of resistors connected to the microcontroller pins. It's a test equipment and I don't know what's the function of this...
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