Presenting of the Magnetic Coupling-Based Transformer-Less High Step-Up DC-DC Converter for Renewable Energy Applications

Table 2

Comparison of the suggested converter and other nonisolated topologies.

Specification	Reference [16]	Reference [17]	Reference [18]	Reference [19]	Reference [20]	Reference [21]	Reference [22]	Reference [25]	Proposed
Number of switches	1	2	1	1	1	2	1	1	1
Number of diodes	2	5	3	3	3	2	4	4	3
Number of inductors	1	0	0	0	1	1	1	0	1
Number of capacitors	2	3	3	3	3	3	3	5	4
Number of coupled inductors	1	1	1	1	1	1	1	1	1
M
VS/Vo
VD/Vo	1		1			1
Input current ripple	Low	High	High	Low	Low	Low	High	High	Low
Efficiency at 200 W (%)	95.9	94.55	95.5	94	-	95.4	93.8	96.2	95.8
Frequency (kHz)	100	50	50	50	24	100	60	100	50
Vo/Vin	146/38	200/24	200/25	400/24	300/15	400/48	400/42	400/40	180/24
N	5	3	3	3	3	4	5	4	1.5
Nominal power (W)	250	200	250	200	100	300	200	350	250
Soft switching	Yes	No	No	Yes	No	Yes	No	No	Yes