Modular HF Link Inverter Topology

Nishanth, FNU; Poongothai, C.; Vasudevan, Krishna

doi:10.1109/pedes.2018.8707460

Cited by 1 publication

(2 citation statements)

References 12 publications

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“…With the design parameters of the converter shown in Section 5.3 under simulation study, this transfer function reduces to (5). In the block diagram (cf.…”

Section: Dc-dc Convertermentioning

confidence: 99%

“…The interfacing has been achieved either by connecting an inverter to the DC source followed by a line frequency transformer or by connecting a high frequency link converter to the DC source followed by a grid interfacing inverter. A line transformer capable of stepping up to a required voltage in single conversion stage 3,4 is significantly higher in cost and bulky 5 because it has to handle low frequency currents and voltages. In the interest of avoiding a large step-up transformer at line frequency for voltage matching at the grid interface, high frequency transformers have been used in many research works.…”

Section: Introductionmentioning

confidence: 99%

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A novel approach forgrid‐connectedinverter operation based on selective harmonic elimination

Poongothai

Vasudevan

2020

Int Trans Electr Energ Syst

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In this article, the feasibility of selective harmonic elimination for grid-connected operation of low voltage DC sources is presented. An appropriate fixed switching pattern is able to achieve good quality current while minimizing switching operations, thereby improving the inverter efficiency. In an attempt to establish the potential advantages over conventional PWM techniques, this article demonstrates the application of SHE in grid connect applications, especially in high power levels while maintaining the ability to provide an independent control of active and reactive powers. The problem formulation is based on using a fixed switching pattern that provides a certain fundamental voltage and eliminates 5 th , 7 th , 11 th , 13 th , 17 th , 19 th , 23 rd , 25 th , 29 th , and 31 st harmonic order. A power structure consisting of two-stage power conversion is proposed to make this possible, enabling amplitude and phase control of the generated AC voltage from the inverter. An LCL filter has been used for grid interface. The switching pattern and the development of control structure are presented. Simulation studies are discussed and experimental results shown validate the proposed scheme.

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“…With the design parameters of the converter shown in Section 5.3 under simulation study, this transfer function reduces to (5). In the block diagram (cf.…”

Section: Dc-dc Convertermentioning

confidence: 99%