The dynamic response of high step-up converter adopting auxiliary capacitor and coupled inductor is shown in Fig. 17.
Thus, the efficiency of the basic boost converter is lower than that of high step-up converter adopting auxiliary capacitor at heavy load as shown in Fig. 19.
Open image in new window Fig. 13 Experiment waveforms of high step-up converter adopting auxiliary capacitor Open image in new window Fig. 14 Experiment waveforms of high step-up converter adopting auxiliary capacitor (V g = 45 V, P o = 300 W).
The experimental waveforms of high step-up converter based on quasi-Z-source network under different input voltages at full load are shown in Figs. 13 and 14, where v ds is the drain-source voltage of the switch.
The efficiency curves of high step-up converter adopting auxiliary capacitor, high step-up converter adopting auxiliary capacitor and coupled inductor, the basic boost converter, and the cascaded boost converter are shown in Fig. 19.
Open image in new window Fig. 15 Experiment waveforms of high step-up converter adopting auxiliary capacitor and coupled inductor Open image in new window Fig. 16 Voltage stresses of the switch D1 and Do1.
The experimental waveforms of high step-up converter adopting auxiliary capacitor and coupled inductor under different input voltages at full load are shown in Figs. 15 and 16 where i cp_p is the current of the primary winding, i Do3 is the current of Do3, v D1 and v Do1 are the voltages of D1 and Do1.
Open image in new window Fig. 17 Dynamic response of high step-up converter adopting auxiliary capacitor and coupled inductor when the load step varies between the full load and the half load Open image in new window Fig. 18 Startup waveform.
(a) Synthetic block function with two discontinuities, "A" represents the strength in terms of an amplitude of the high step and (b) function with the white Gaussian noise (0,1).
Table 1 gives the comparison of the proposed converter with state-of-art high step-up converters adopting coupled inductor [31, 32, 33, 34, 35].
Given the importance of achieving a high Step 1 score on residency choice, it is important to further identify which characteristics may lead to a higher score.
