Meaning of Rotor flux
Hi Chris,It is stated that the FAST estimates the rotor flux and the rotor angle.what do you mean by rotor flux ?For example, in PMSM/synchronous motors, if you write the stator equations in the rotor...
View ArticleControlling Low Side FETs (DRV8301-69m-kit)
Hi folks,I posted this question to the motor driver forums but was recommended by Nicholas to come here with my problem. Here is the link to my exchange with him:...
View ArticleUnipolar 2-Quadrant PWMs
This simulation models the effect of unipolar 2-quadrant PWM switching. As long as the amplitude of the back-emf voltage in the motor does not exceed the bus voltage, it is shown that unipolar 2q...
View ArticleMotor Load Model
This simulation shows how to model the static and kinetic aspects of a motor load. The load block accepts motor electromagnetic torque as an input, and it generates acceleration, velocity, position...
View ArticleDC Motor Model
This simulation shows the performance of a simple DC motor when connected to a power supply and a variable load.TRANSIENTS: At t=0, the motor is connected to 24V. At 250 mS, the load torque is...
View ArticleSingle-Phase Back-EMF Observer
This simulation shows how to implement a back-EMF observer by comparing the measured phase current with the estimated phase current and using the error signal to recreate the missing back-EMF...
View ArticleAlpha-Beta PMSM Digital Angle Observer
This simulation shows the sensorless single-phase back-EMF estimation technique extended to a two-phase (alpha-beta) representation of a 3-phase motor. In addition, an angle demodulator is introduced...
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electrical angle in Instaspin F28027
hi,i am using a F28027 MCU with CCS6 and Motorware Proj_lab5b.i am running a motor with F28027 and i need a electrical angle in my functions.i searched the forum and see the this link :but it didn't...
View ArticleQ_D axis resistance and inductance
HiI am using the DMC library to control a bldc motor with FOC, i saw Dave Wilsons lecture on how to set the PI current controller coefficient (Kp,Ki) with respect to the RL constants of the motor.if i...
View ArticleINSTASPIN-FOC: How to make the motor "beep"?
Hello -First of all I just want to say that I love INSTASPIN-FOC and the TI support community!I am currently designing my own hardware, but am using a LAUNCHXL-F28027F/BOOSTXL-DRV8301 for now.Most...
View ArticleCalculating current consumption
Hello Chris,we got a problem with an answer you provided me some time ago.In this thread you confirmed the overall current consumption to be the Is_A value...
View ArticleSimulation Power!
As many of you know, I am a BIG fan of using simulation tools to unlock the mysteries of the motor control universe. With embedded model-to-code options from VisSim, PSIM, PLECS and Simulink becoming...
View ArticleInstaSpin BLDC startup current spike
I am using the Instaspin BLDC code to run a small 12 volt motor. We are using the cascaded level 8 configured code. I notice a current spike when I enable the motor to start. This initial spike...
View ArticleInstaspin BLDC hardware implementation
I have seen demos explaining instaspin FOC performance , but everything was done with control suite by means of software we are building a solar car .My question is simple is hardware control possible...
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instaspin foc, abnorml current waveform,application in water pumper.
I’m testing a BLDC,AC 230V in, 2HP, 8 poles,2850RPM rated,application in water pumper. hardware referenct HVKIT. use mcu 28027F.motorware version: motorware_1_01_00_14ccs Version: 6.0.1.00040.the...
View ArticleMeaning of Rotor flux
Hi Chris,It is stated that the FAST estimates the rotor flux and the rotor angle.what do you mean by rotor flux ?For example, in PMSM/synchronous motors, if you write the stator equations in the rotor...
View ArticleMaximum torque per amp strategy for IPM motors
Hello,I'm trying to find a way to get maximum torque per amp out of an IPM (interior permanent motor). I do have a resolver mounted on the motor, but as the optimal angle changes with current (and...
View ArticleSpace Vector Modulation
This simulation shows an example of the Space Vector Modulation technique used with InstaSPIN-FOC. There are two advantages of this technique:1. No waverform LUT is required. All calculations are...
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How to handle voltage transitions at lower RPMs (850-1000RPM) using...
Hello,I am running into an issue where when external DC power (19V) is removed from the unit and the system transitions to internal battery power (14V) and the motor is at a low RPM setting (850RPM –...
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Is it a wrong formula about input power
I found a post about power calculation: https://e2e.ti.com/support/microcontrollers/c2000/f/902/t/406263// Equations for input power float_t input_power_sf = _IQtoF(gAdcData.dcBus) * (float_t)(0.5 *...
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