A switched‐capacitor multilevel inverter topology employing a novel variable structure nearest‐level modulation

Abstract

This article introduces a nine-level switched-capacitor multilevel inverter with twice voltage boosting feature. It also aims at proposing a novel variable structure nearest-level modulation scheme that has been implemented in the pro-

Switched-Capacitor Multilevel Inverters: A Comprehensive Review

“…In this case, by replacing the T/NPP cell with an HB leg and using the same single dc source with a π-type SC cell, a 5L SC-based inverter can be obtained, while through a series connection of this π-type SC cell with the similar SC network, the number of output voltage levels can be even extended, as presented in [59]. The presented 9L SC-based inverter in [72] and [73] has also used this T/NPP cell with an SC-integrated FB cell and SPSC unit, while 12 and 10 power switches are used, respectively, with a double voltage gain. Taking the structure presented in [57] into account, and using two SPSC basic units in the left-and right-hand sides of its π-type network, another 13L SC-based inverter with 15 power switches and two HB legs is also derived, as shown in Fig.…”

“…Taking the advantage of this novel/developed H-bridge and using series-connected SPSC Unit-I in left-and right-hand sides, a generalized multiport SC-MLI with asymmetric adjustment of the integrated dc sources is developed in [73]. This circuit architecture is depicted in Fig.…”

“…Regarding these contributions, many new challenges, design considerations, and practical limitations have been reported. Accordingly, MLIs with the SC concept are developed through different circuit configurations, such as single [19]- [75] and multiple [5], [6], [73], [76]- [91] dc-source structures, mid-point-clamped techniques [92]- [120], and common-grounded (CG)-based topologies [121]- [145]. Their performance is much improved using a hybrid topological design, where other well-known integrated techniques, such as flying-capacitor (FC) [146]- [157] and switchedboost (SB) [158], [159] technologies, are merged with the SC concept.…”

Design and investigation of a triple boost multilevel inverter with self‐balanced switched capacitors and reduced voltage stress

“…The topologies proposed in Siddique et al 16 and Sun et al 17 have similar stress on switches but Siddique et al 16 uses 12 semiconductor switches which is lesser than 16 switches in Sun et al 17 The seven‐level SCMLI with a single dc source discussed in Siddique et al 18 has 11 IGBT along with two capacitors. Some more SCMLI structures with higher voltage gain are proposed in previous works 13,19–29 . In Chen et al, 29 an SCMLI with a common ground has been discussed for PV applications.…”

“…Some more SCMLI structures with higher voltage gain are proposed in previous works. 13,[19][20][21][22][23][24][25][26][27][28][29] In Chen et al, 29 an SCMLI with a common ground has been discussed for PV applications. This paper proposes an SCMLI topology to achieve triple voltage gain.…”