Voltage multiplier applied to boost DC–DC converter: Analysis, design, and performance evaluations

Abstract

Summary This paper presents a new voltage multiplier with a small number of components, composed of a coupled inductor and a switched capacitor cell, which allow four different configurations. To evaluate these configurations, these cells were integrated into the boost converter, thus generating four new high voltage gain topologies. These topologies have different characteristics: thus, the principle of operation, voltage gain, voltage and current stress, and design guidelines of each converter were evaluated. Finally, four prototypes of 30 V/400 V and 200 W were built and evaluated experimentally.

A non‐isolated switched inductor‐capacitor cell based multiple high voltage gain DC‐DC boost converter

“…Thus, the values of the capacitors can be obtained from the voltage ripple across the capacitors (ΔV C1 , ΔV C2 , and ΔV C3 ) and capacitor voltage (V C1 , V C2 , and V C0 ). Capacitance values can be determined as per Equations ( 14), (15), and ( 16).…”

“…11,12 These non-isolated converters are classified into coupled inductor converters and non-coupled inductor converters. 13 In previous studies, 14,15 a coupled inductor converter with a high voltage gain was developed. But during the OFF time, coupled inductor leakage caused voltage rise across the switches.…”

High step‐up buck–boost DC–DC converter with coupled inductor and low component count for distributed PV generation systems

“…A PV panel usually supplies a range of 18‐ to 50‐V DC, which commonly results in 100‐ to 600‐W power. Thus, a step‐up converter is needed to increase PV voltage to DC bus voltage (typically >380 V) to interface with the grid tie, load, or microgrid DC 5–8 …”

“…Thus, a step-up converter is needed to increase PV voltage to DC bus voltage (typically >380 V) to interface with the grid tie, load, or microgrid DC. [5][6][7][8] Theoretically, the ideal boost and buck-boost converter can achieve high voltage gain when the duty cycle (D) is close to 1. However, this is not feasible experimentally, because boost converter components have parasitic resistances.…”

Nonisolated high gain hybrid switched‐inductor DC‐DC converter with common switch grounding

“…10 Recent dual active bridge topologies are capable of achieving zero voltage switching by the integration of resonant converters at fixed or variable frequency modulation. Some of the aforementioned demerits in isolated topologies can be overcome by adopting rectifiers, voltage doublers-quadruplers at the secondary side and more over reverse power flow, circulating currents can also completely eliminated as mentioned in Mustafa et al 11 Numerous voltage amplification techniques based on conventional boost converters, 12 switched inductors, [13][14][15] switched capacitors, [16][17][18][19] coupled inductors, [20][21][22][23] cascaded connections, 24,25 quadratic boost, 26 voltage lift, 27,28 voltage multiplier with capacitor-diode combination, 29,30 hybrid switched inductor with intermediate capacitor, 31,32 and quasi Z source type 33 are used for nonisolated converters. The merits of nonisolated converters such as simple in structure and low cost are preferable in applications where galvanic isolation is not necessary.…”