Jul 30, 2008 #1 N neroburn Junior Member level 1 Joined Jan 24, 2008 Messages 16 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,381 Hello there, May I know what the relationship between frequency and voltage.? How to get the best rate of frequency to control the motor?
Hello there, May I know what the relationship between frequency and voltage.? How to get the best rate of frequency to control the motor?
Jul 30, 2008 #2 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,419 Helped 14,749 Reputation 29,780 Reaction score 14,100 Trophy points 1,393 Location Bochum, Germany Activity points 298,094 Frequency PWM PWM carrier or AC output frequency?
Jul 30, 2008 #3 B bunalmis Full Member level 5 Joined Jan 3, 2003 Messages 276 Helped 19 Reputation 38 Reaction score 13 Trophy points 1,298 Location Ireland Activity points 2,167 Re: Frequency PWM Following two eauation may help you. DeltaI = (Vdc / L) * T T = Pwm period Vdc = DC bus voltage L = inductanse Delta I = Maximum current ripple near the set point --------------------------------- Fmaxac= Fpwm / (Pwm resolution) with direction signal or Fmaxac= Fpwm / (2*Pwm resolution) without direction signal Fmaxac, frequency of produced AC power signal
Re: Frequency PWM Following two eauation may help you. DeltaI = (Vdc / L) * T T = Pwm period Vdc = DC bus voltage L = inductanse Delta I = Maximum current ripple near the set point --------------------------------- Fmaxac= Fpwm / (Pwm resolution) with direction signal or Fmaxac= Fpwm / (2*Pwm resolution) without direction signal Fmaxac, frequency of produced AC power signal