CTRL_setMaxAccel_pu() Deceleration
We’re using the TMS320F28027F with InstaSPIN motor control firmware. I’m fairly new to motor control and wondering about deceleration with the CTRL_setMaxAccel_pu() InstaSPIN FOC API function. Are...
View Articlewidening speed range of BLDC_Sensored.c LEVEL BUILD 4 (DRV8312-C2-Kit)...
I am testing the NEMA17 Motor that came with the DRV8312-C2 Kit. The code BLDC_Sensored.c produces PWM signals that does soft chopping on the MOSFETS. I modified this code to allow hard chopping on the...
View ArticleHow to get Estimated Torque and Flux Values from FAST
We are using the following functions to get the values for estimated torque and estimated flux and the values returned do not appear to be correct.EST_getTorque_Nm ()EST_getFlux_Wb ()The values for...
View ArticleThe svpwm used in the instaSPIN foc is different from the classical method.Why?
1.` I used the F28027 launchpad with 8301 kit .The svpwm used in the motorware is different from the classical method .why?2. Is there any more effective svpwm method for svpwm?Thanks advance.
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 ArticleSelection of PWM Frequency
Hi,I am new to motor control and experimenting with the Instaspin-motion library. This maybe a very simple question, but how do you select the PWM frequency for an application. Is there an equation...
View Articlereset nFault in DRV8305
Advise please as it is correct to reset nFault in DRV8305? I use Lab5b.I do it to Main to ISR. it works not beautifully.#ifdef nFault if(gFaultcnt++ > (uint_least32_t)(USER_ISR_FREQ_Hz /...
View ArticleWhy is the Stationary Reference more suitable for Direct Field Oriented...
Good Day all, I am currently about to implement Indirect and Direct methods for FOC of an Induction Motor. From the literature I have read most suggest for Direct Field Oriented Control it's best to...
View ArticleAccuracy of FAST angle estimation
Hi,We are in the stage of evaluating our options for motor control and have some queries about the FAST algorithm. We have a very specific application where we have a motor running at upto 400rpm and...
View ArticleOvermodulation and other questions
I have been playing around with motoware on the LAUNCHXL-F28027F + BOOSTXL-DRV8301 platform for a while now. For the most part I am coming to terms with it. However I am left with several questions I...
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 ArticleInstaSpin SVM Questions
I am relatively new to motor control and am in the process of trying to wrap my head around everything. I am using the InstaSpin FOC motor control firmware on a TMS320F2807 chip and am wrestling with...
View ArticleDoes the estimator can work without voltage feedback circuit?
Hello,I am using InstaSPIN-Motion with F28069M from Lab12b. Due to some reasons, my board doesn't have voltage feedback circuit. Are the following features still supported or need be modified?1.I find...
View ArticleDoes InstaSPIN FOC provide DC bus voltage control during dynamic breaking?
When the PM motor is acting as a break (trying to slow down the RPM of the load it is carrying), the energy will feed back to the DC link capacitor. Does InstaSPIN FOC control the breaking when the DC...
View ArticleInstaSpin lab04 current control issue
Hi Sir,evm : DRV8301-69m-kitmotorware ver : v15application : e-bikemotor pole pair : 7user.h USER_MOTOR_MAX_CURRENT (5.0) --> for testI used lab04. Iq=2.0 the motor run max speed =...
View ArticleCTRL_setMaxAccel_pu() Deceleration
We’re using the TMS320F28027F with InstaSPIN motor control firmware. I’m fairly new to motor control and wondering about deceleration with the CTRL_setMaxAccel_pu() InstaSPIN FOC API function. Are...
View Articlemotor could not speed up to it's max speed
hello,my motor's max speed is 5000RPM, but motor became shaking durning 3700RPM. and it is sensorless lab (FOC)this is my user.h param:#define USER_IQ_FULL_SCALE_FREQ_Hz (400.0) #define...
View ArticleTMDSHVMTRINSPIN
HelloI've a problem with TI kit TMDSHVMTRINSPIN. I've a problem using InstaSpin. When i run the GUI using MotorWare, i can estimate the motor parameters as Rs, Lsq,Lsd, Flux. The problem is that i...
View ArticleHow to do regenerative braking on DRV 8312 using PM sensorless project?
I am working on a project in which I have to do regenerative braking using the DRV 8312 kit and a PMSM BLDC motor.I would like to know if anyone can assist/was successful in doing so. In terms of...
View ArticleFlying Start, Anti-Wind, Matched Speed: motor already spinning
One of the unique capabilities of the FAST observer is that it can lock on even if the motor is already spinning. This is very common in fan applications and is also quite useful in starter generators...
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