SVM gain
Hello,I am new to motor controls. I am working through the Insta-Spin FOC labs. They are very nice and all the hardware and software is working very well. This is a great learning tool. I have question...
View ArticleSpeed sensor required for Lab 5B?
Hello,I am developing a motor control for a rotary compressor. I am working through the Insta-spin labs and everthing is ok until I get to Lab5B. We have no speed feedback sensors -encoder or tach....
View ArticlePrecise units for the identified gMotorVars.Flux_VpHz
Hi ChrisI am having some contradictory expediences trying to interpret the parameter: gMotorVars.Flux_VpHz.Can you tell me what you understand the units of this parameter to be? In particular - I...
View Articlerelationship between rotor flux angle and Iq for IPM
Dear sir/madam, I read SPRUHP4.pdf, and see "Ideal Orientation: 90 degrees for non-salient synchronous; slightly more for salient machines, and slightly less in asynchronous machines since part of...
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Motor runs fine up to 4400revs but halts at 4500
Hi,I've been struggling to get this motor to run but I thought I had it nailed down until I ran it loaded. Using the GUI (loaded with Lab10a) I can increase the speed by 500 RPMs up until I get to...
View ArticleResolution of FAST speed estimation
Hello,you can read "reliable and robust estimation of flux, angle, speed and torque across use conditions", "Best speed input into the control System", "high quality feedback signals", ...but is there...
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The Empires Strike Back (part 2)
With more and more MCU suppliers pouring onto the battlefield, the entrenched players found themselves under siege. Would MCUs be forced to surrender to the same fate that DRAMs did years earlier in...
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Return of the Code Magi (part 3)
In this series we have been discussing the challenges facing the microcontroller industry over the last few decades, and some of the steps taken by MCU companies to remain competitive in a market that...
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Save the date: #TImotorHr on July 31
Most people don’t realize just how vast the field of motor control is. In fact, when you think about it, motor control is the biggest sandbox in engineering! It encompasses field theory, analog design,...
View ArticleAttempting to "code" using MATLAB R2013b or similar software...
Hello! I am new to TI DSPs and find learning and programming pretty tedious and difficult. I'm trying to control 3 phase inverters (6 switches - for IM and PM machines) and also 2 phase switching legs...
View ArticleControlling induction motor at low RPM
HI,We ran the induction motor in a closed loop. We can’t control RPM below 60 RPM.electrical angle going haywire in below 60 RPM.i adjust gains also. Is there any other method for controlling induction...
View ArticleTMDSCNCD28377D & 4 motor 4 DRV8303 isolation recommendation?
Hi.I am wondering if there are any recommended hardware isolation to connect theTMDSCNCD28377D & 4 - DRV8303 to drive 4 motors?.I looked at the evaluation boards schematics but I did not find a...
View ArticleSVM gain
Hello,I am new to motor controls. I am working through the Insta-Spin FOC labs. They are very nice and all the hardware and software is working very well. This is a great learning tool. I have question...
View ArticleSpeed sensor required for Lab 5B?
Hello,I am developing a motor control for a rotary compressor. I am working through the Insta-spin labs and everthing is ok until I get to Lab5B. We have no speed feedback sensors -encoder or tach....
View ArticlePM sensorless - level6 - Current Control -DRV8301 hc c2 kit
Hi,i'm editing TI's project PM sensorlessfor the kit DRV8301 hc c2 kit.I'm not workingwithNEMA17 motor .I noticedthat if IsetthecurrentiqRef to 0.95 , I get a current on the power supply of about 2.8...
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BLDC trapeizodal Control trapeizodale with hall effect sensors
Hi, I am monitoring the BEMF trapezoidal control with hall effect sensors. I notice the spike in the graph (red circles). What is the cause?
View ArticleTeaching Your PI Controller to Behave (Part VIII) How to measure system...
Hello,I have been trying to measure my system inertia in order to close the speed loop on my motor controller. I am using the boostXL-DRV8301 REVB with the F28027 microcontroller.I am trying to follow...
View ArticlePrecise units for the identified gMotorVars.Flux_VpHz
Hi ChrisI am having some contradictory expediences trying to interpret the parameter: gMotorVars.Flux_VpHz.Can you tell me what you understand the units of this parameter to be? In particular - I...
View Articlerelationship between rotor flux angle and Iq for IPM
Dear sir/madam, I read SPRUHP4.pdf, and see "Ideal Orientation: 90 degrees for non-salient synchronous; slightly more for salient machines, and slightly less in asynchronous machines since part of...
View ArticleClik here to view.
Motor runs fine up to 4400revs but halts at 4500
Hi,I've been struggling to get this motor to run but I thought I had it nailed down until I ran it loaded. Using the GUI (loaded with Lab10a) I can increase the speed by 500 RPMs up until I get to...
View Article