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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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Current Control Loop Tuning
Below I have attached two images. The first one our motor operating at 20A Iq. The second is the motor at 40A Iq. I'm sampling at 2 Mega Samples per second and then running the post op amp current...
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How to control power generation in ACIM
Other Parts Discussed in Thread: MOTORWAREWe are testing a high current ACIM for use as a generator.This uses custom hardware controlled by a 28069 microcontroller.It uses an encoder for position...
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Phase current problem at motor high speed
Other Parts Discussed in Thread: DRV8301e2e.ti.com/.../23271.user.hHello guysI am using InstaSpin for E-mobility application; this soluction is running on C++ code, keeping the InstaSpin libraries in C...
View ArticleSpeed Limitation while using Torque Mode
Other Parts Discussed in Thread: MOTORWAREHello Guys,I am using MotorWare for a university project. We have an experimental electrical car, and want to use InstaSPIN for control. We have adapted the...
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how to set a ADC current offset for the other PIN
Other Parts Discussed in Thread: MOTORWAREIn my application,I need detect the bus current,so I add hall sensor on bus line.the1.65V±1.65V output signal PIN of hall sensor connects ADC-B5 PIN of...
View Articlerelationship between rotor flux, Ke, Kt
Dear Sir,From user manual(spruhj1f, Page 396), the rotor flux (which is also equal to the back-EMF constant (Ke) in SI units). Also,Mtr(s)=3/4*P*rotor flux; ??? since it is the transfer function...
View ArticleUnderstanding the #define USER_ADC_FULL_SCALE_CURRENT_A (value) used in the...
Other Parts Discussed in Thread: DRV8301, MOTORWARE, TLV2781, BOOSTXL-DRV8301I am using just MotorWare v1.01.00.14 code. I am using both the DRV8301_69M_KIT and alternatively the LAUNCHXL_28069M kit...
View ArticleIs Instaspin proprietary?
Other Parts Discussed in Thread: INSTASPIN-BLDChello, I'm interested in sensorless BLDC control with an FPGA. (my project is restricted to use FPGAs instead of TI processors). In my searches, I found...
View ArticleCompute Back EMF
Dear Sirs, In manual spruhj1f, Page 411 Figure 11-19, Decoupled PI Controllers for a PMSM Vq = PID_q_out + id * ω * Ls + ω * KE ; I want to use “USER_MOTOR_RATED_FLUX * ω(rad/s) * 2 * 3.1415 “to...
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Why speed and current PID controller use different algorithm?
Dear sir/madam, In InstaSpin lab, the speed PID controller is in parallel form, while the current PID controller is in series form. I don't know what cause them different. Best...
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...
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 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...
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