Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
Hello,
The development setup I have includes a High Voltage Motor Control and PFC Developer's Kit (TMDSHVPFCMTRKIT), BLDC motor (HVBLDCMTR) and a 72 Vdc external power supply to generate DC-Bus for the inverter.
Below are the motor parameters as they are defined in the HVBLDC_Sensorless-Settings.h header file provided by TI in the HVBLDC_Sensorless project.
// This machine parameters are based on BLDC motor
// Define the BLDC motor parameters
#define RS 2.35 // Stator resistance (ohm)
#define RR // Rotor resistance (ohm)
#define LS 0.007 // Stator inductance (H)
#define LR // Rotor inductance (H)
#define LM // Magnetizing inductance (H)
#define POLES 4 // Number of poles
// Define the base quantities
#define BASE_VOLTAGE 184.752 // Base peak phase voltage (volt)
#define BASE_CURRENT 20 // Base peak phase current (amp)
#define BASE_TORQUE // Base torque (N.m)
#define BASE_FLUX // Base flux linkage (volt.sec/rad)
#define BASE_FREQ 100 // Base electrical frequency (Hz)
I am not a motor expert, but looking at the motor’s (BLWS235D-160V-3000) data sheet (http://www.brushless-dc-motor.com/products/brushless/brushless-dc-motor-item.php), except the POLES, I could not figure out how the other parameter values were calculated.
My questions are:
1. Are those parameter values correct for the BLWS235D-160V-3000 motor?
2. In the case of 72 Vdc external power supply, should the BASE_VOLTAGE change?
Thank you for the help!
Zouhrab
