nikeplato
Junior Member level 1
bldc motor wire length
Hello experts,
I have a 3 phase BLDC motor controller board: current is limited to 3A.
I am PWM ing the FETs at 20 KHz.
Motor inductance 4.5 mH, resistance 2Ohms.
Ta the radiated emisiions tests, the whole assembly is over the limits at 20 KHz, 700 KHz, 190 MHz and possible higher (the test is not over).
I have limited experience with the 3 phase BLDC motor.
Could anyone put me on the right track to design a filter to suppress motor noise, please?
I forgot to mention - when the motor is not activated (not driven) but just in stand by, the module passes the test, which would mean that the electronic circuit does pass but only the motor fails.
Thank you a lot.
I would apppreciate a timely answer.
Hello experts,
I have a 3 phase BLDC motor controller board: current is limited to 3A.
I am PWM ing the FETs at 20 KHz.
Motor inductance 4.5 mH, resistance 2Ohms.
Ta the radiated emisiions tests, the whole assembly is over the limits at 20 KHz, 700 KHz, 190 MHz and possible higher (the test is not over).
I have limited experience with the 3 phase BLDC motor.
Could anyone put me on the right track to design a filter to suppress motor noise, please?
I forgot to mention - when the motor is not activated (not driven) but just in stand by, the module passes the test, which would mean that the electronic circuit does pass but only the motor fails.
Thank you a lot.
I would apppreciate a timely answer.