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Motorware gMotoVar structure member variables

Tom Chadwin
Prodigy 50 points
Other Parts Discussed in Thread: MOTORWARE

Hi, I have some questions concerning the data structures and and variables used in Motorware and Universal GUI.

1). In the InstalSPIN_F28066xM_UNIVERSAL GUI on the "FOC" tab, is the field labelled "Flux (V/Hz)" correspond with the gMotoVar.FluxVpHz and is the unit for both Voltage per Hz?

2). What is the difference between gMotoVar.FluxVpHz and gMotoVar.FluxWb?

3). Is there a suggested document where I can read about what each of the member variables of the gMotoVar structure mean?

4). I noticed some of the member variables in gMotoVar structure are not in engineering units. For example, the member variables having to do with speed such as gMotoVar.Speed_krpm is not in KRPM. What unit is it in and how do I convert it to KRPM?

Thanks in advance.

  • 0
    TI__Guru** 118750 points
    1. yes gMotorVars.Flux_VpHz
    2. Webers (Wb) is VpHz / (2*pi). Webers is the more normal way of specifying flux
    3. as you work through the InstaSPIN Lab User's Guide you should become familiar with all the variable names
    4. gMotorVars.Speed_krpm is certainly in KRPM. These numbers are in IQ24 format though, so if you are just looking at the variable in the Expressions window you need to either right click and set the format to IQ24 or you need to use the .js script which loads the expressions view with the proper format cast.