20.6.8.5. JMAG RT

The JMAG RT block is for co-simulation between CoLink and JMAG RT . This block needs to use JMAG RT Model. The file extension is rtt.

• JMAG-RT (.rtt) files can be generated from JMAG software.

• The developer, JSOL, has made the JMAG-RT library for typical motors available at the following path:

  • https://www.jmag-international.com/modellibrary/

• JMAG-RT Online Help

  • https://www.jmag-international.com/wp-content/uploads/members/en/jmag-rt/help/index.htm#t=00_home.htm

20.6.8.5.1. JMAG RT Subsystem

• JMAG RT Subsystem

• JMAG RT Subsystem Input/Output

Table 20.69 Inputs of JMAG-RT Subsystem

Input Parameter(s)	Description
Va, Vb, Vc	Input Voltage.
Tm	Mechanical load torque.
Coil Temp	Coil Temperature.
Magnet Temp	Magnet Temperature
Coil Temp	Coil temperature.
DC Voltage	DC bus voltage which is used to refer the AC Copper loss look up table and harmonic iron loss look up table.
Carrier Freq	Carrier frequency which is used to refer the AC Copper loss look up table and harmonic iron loss look up table.

Table 20.70 Outputs of JMAG-RT Subsystem

Input Parameter(s)	Description
is_abc	Stator line currents.
thetam	Rotor Angle.
wm	Rotor speed.
Te	Electromagnetic torque.
Fabc	Coil Flux.
LdLq	Coil d, q inductance.
Iron loss	Sumation of Eddy loss and Hysteresis loss.
User Specified Parameters	Parameters in RTT file.
DC Copper Loss	DC component of coil copper loss.
AC Copper Loss	AC component of coil copper loss.

• Inside of JMAG-RT Subsystem

20.6.8.5.2. JMAG RT Block

• JMAG RT Block

• JMAG RT Block Input/Output

Table 20.71 Inputs of JMAG-RT Block

Input Parameter(s)	Description
Va	Voltage Input A.
Vb	Voltage Input B.
Vc	Voltage Input C.
Theta	Rotor Displacement
Coil Temp	Coil temperature.
Magnet Temp	Magnet Temperature.
DC Voltage	DC bus Voltage
Carrier Freq	Carrier Frequency

Table 20.72 Outputs of JMAG-RT Block

Output Parameter(s)	Description
Ia	Current Output A.
Ib	Current Output B.
Ic	Current Output C.
Torque	Rotor Torque.
EddyLoss	Eddy Loss.
HysLoss	Hysteresis Loss.
Fu	Coil Flux U Phase.
Fv	Coil Flux V Phase.
Fw	Coil Flux W Phase.
Ld	Inductance d.
Lq	Inductance q.
Magnet Temp	Magnet Temperature.
DC Copper Loss	DC component of coil copper loss .
AC Copper Loss	AC component of coil copper loss.
User Parameters	User Parameters which are defined in RTT file.

20.6.8.5.3. JMAG RT Block Dailog

• Highlight Items

  1. RTT File Input box.

  2. There are three types of accuracy: LdLq, Spatial Harmonic, and Flux Integral. To use each type of accuracy, the relevant items need to be defined within the RTT file.

  3. Decide whether to use Iron Loss table data or not. If select the #3 . Table from JMAG considering PWM Carrier Frequency, specify filter inductance is available.

  4. When the “Set values on manually check” box is checked, you can configure certain coefficients and turns of the coil. The values related to temperature located below can be configured when the “Use Temperature Correction Checkbox” is checked.

  5. To calculate Temperature Correction, this checkbox must be checked.

  6. There are two types for table data Interpolation. Linear and Cubic. Linear is default option.

• Remains

  • Use AC Copper Loss Equivalent Resistance Table : To active AC Copper loss, this checkbox should be checked.

  • Resistance of Coil : Relate with working value of R.

  • Offset Angle : Initial displacement of rotor.