Gain criterion for a stable circuitThe second criterionA stable circuit is that to prevent rapid changes of phase shiftwith frequency characteristic of a circuit with a -2 gain slope. (10dB/decade is recommended)48??????????Gain criterion for a stable circuit2nd criterion1stcriterion49??????????from Pressman-Switching power supply designLC output filter with an ESRFco/Fesr0.250.50.751.01.21.41.61.82.0??????????Phase lag166??153143135130126122119116Fco/Fesr2.5345678910Phase lag112??10810410199.598.197.196.395.750from Pressman-Switching power supply designPWM GainGm=0.5(Vsp?1)3Vea=3, Vav=Dmax(Vsp-1)51??????????from Pressman-Switching power supply designGain of Sampling NetworkVsR1Gs==20logVoR1+R2(Gs=-6 dB if R1=R2)52??????????from Pressman-Switching power supply design
电力电子控制策略与稳定工程
