Implementing the correct motor parameters is critical for the firmware to control the motor successfully. The parameters include Stator resistance, Stator inductance, flux, and so forth, and those parameters have a default value for a default motor inside the firmware.

For a different PMSM motor, those parameters are usually found from the specification; however, if those parameters cannot be found, the GUI software can identify those parameters.

First, choose the motor identification command in the Control Window tab as shown in Figure 3-7.

Figure 3-7 Motor Identification Command

Next, select the Motor Parameters tab. The motor identification applies current to the motor to estimate motor parameters, those identification parameters, such as current for stator resistor estimation, current for stator inductor estimation and R/L Excitation Frequency (Hz) can be changed or left on the default settings.

Click the START button to start motor identification. An audible noise is heard, and the motor spins at low speed during identification. Monitor the identification status and motor parameters, the overall identification time is about 2 minutes. Figure 3-8 shows the steps to start motor identification.

Figure 3-8 Start Motor Identification

After identification is complete, the Motor Pairs, Stator resistance, Stator inductance, flux, and so forth, must be written to MCU flash to make sure those parameters are saved inside the MCU. Select the Control Parameters tab, choose to store motor and control parameters to MCU Flash, or save them to a file. To verify writing is successful, click the Read Settings from MCU Flash button, then select the Motor Parameters tab to make sure motor parameters are the same as what were written before. Figure 3-9 shows the locations of the buttons mentioned in this paragraph.

Figure 3-9 Store Motor Identification Result