In this paper, a novel on-line dc capacitance estimation method for the PWM converter is proposed At no load, Input current at a low frequency is injected, which causes dc voltage ripple with the ac voltage and current ripple components of the dc side...
In this paper, a novel on-line dc capacitance estimation method for the PWM converter is proposed At no load, Input current at a low frequency is injected, which causes dc voltage ripple with the ac voltage and current ripple components of the dc side, the capacitance can be calculated Experimental result shows that the estimation error is less than 2%.