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INSTASPIN-BLDC: Where to find identified parameters by each instaspin model

Sanmesh Udhayakumar
Expert 6065 points
Part Number: INSTASPIN-BLDC
Other Parts Discussed in Thread: MOTORWARE

Overall Goal: Using motor simulator and comparing to real motor. Want to be able to input motor parameters identified by instaspin into motor simulator to compare simulator and real motor. 

Questions to do this:

1) Where can I CLEARLY see what parameters are identified by each instaspin type (EX. BLDC, FOC, MOTION) to see if the same parameters are used in motor simulator, and in order to see which instaspin type I should buy? I've looked at the InstaSPIN-FOC™ and InstaSPIN-MOTION™ User's Guide but it isn't clear which parameters are identified by the instaspin software.

2) Which instaspin type would you recommend to get the following parameters required by motor simulator: inertia (kg*m^2), Static friction coefficient (N*m), Winding temperature coefficient (1/deg C), magnet temperature coefficient (1/deg C), initialRotorAngle? 

Appreciate the help.

Eddy currents damping coefficient (N*m/(rad/s))
  • 0
    TI__Genius 17175 points
    InstaSPIN-BLDC cannot identify any motor parameters, it is an open source algorithm that does not support that functionality. For PMSM, InstaSPIN-FOC will identify Rs, Lsd, Lsq and Flux. For ACIM, InstaSPIN-FOC will identify those plus Rr and magnetizing current. For ACIM, you'll need to be able to lock the rotor to correctly identify the parameters. InstaSPIN-MOTION is intended for use with sensored FOC, and can identify system inertia and friction. Initial rotor angle can be ascertained using HFI/IPD lab for InstaSPIN-FOC, but is not a programmable "parameter" as it should be different every time the system starts up. Sensored systems do not need to ID initial rotor position.

    InstaSPIN does not offer a way to identify winding or magnet coefficients. These should be available from the motor manufacturer.

    For your need in (2), I would suggest using InstaSPIN-MOTION

    Sean
  • 0 in reply to Sean Bigley
    TI__Expert 6065 points
    Questions:
    1) If I want to get the motor parameters from a sensorless BLDC motor, would INSTASPIN MOTION still work and be able to get the inertia?
    2) To my knowledge, there are actually 100+ parameters that Instaspin characterizes from a motor, which far exceeds the few basic parameters you listed. Where can I find this list of parameters with descriptions of them? Some of the parameters I'm interested in are winding temperature coefficient (1/deg C), magnet temperature coefficient (1/deg C), static and kinetic friction coefficients separately, and I'm interested in seeing what else can be characterized by INSTASPIN.
  • 0 in reply to Sanmesh Udhayakumar
    TI__Genius 17175 points
    You can find the list of parameters that are identified in the InstaSPIN labs in the InstaSPIN lab user's guide in MotorWare. Please download MotorWare and navigate to Resources->Training: User's Guides, Labs, Tutorials-> InstaSPIN Projects and Labs User's Guide. Lab2x is for Motor ID (FOC) and Lab5c is for Inertia ID (MOTION)

    InstaSPIN-MOTION is intended for sensored systems, you will use InstaSPIN-FOC for sensorless FOC motor control.

    Sean