lollandster
10 W
Hi. I have a Golden Motor HPM05KL (5kW BLDC) and a Kelly KLS7250D Controller that I have connected together. I seemed to work nicely except some slight clicking noise at high speed that I didn't think too much about. But when I applied load to the motor it started to make very hard knocks which sounds like hall effect sensor problems. So I took the motor and controller out of the boat and on to the bench to do some troubleshooting. I started by putting a scope on the hall effects to try to capture any irregularities, but what I found surprised me. There seems to be an abundance of high frequency noise present.
It looks like the noise is 50kHz. Since the controller is Sinusoidal Wave I'm guessing that the noise I see is the PWM frequency or similar.
What I'm wondering now is if this nose might be the source of my problem or if I'm just measuring at too high impedance or something silly like that.
It looks like the noise is 50kHz. Since the controller is Sinusoidal Wave I'm guessing that the noise I see is the PWM frequency or similar.
What I'm wondering now is if this nose might be the source of my problem or if I'm just measuring at too high impedance or something silly like that.