A High Step-Down Dual Output Nonisolated DC/DC Converter With Decoupled Control

Mallik, Ayan; Khaligh, Alireza

doi:10.1109/tia.2017.2757447

Cited by 34 publications

(14 citation statements)

References 19 publications

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“…Similarly, the following can be obtained from (3) and 4and (8) and (9) using the Charge balance on capacitors C 1 and C 2…”

Section: St Intervalmentioning

confidence: 99%

“…Owing to the demands and benefits of multi-output converters, lots of research studies are being done on them and various multioutput converters are reported in the literature. In [8][9][10], the discussed multiple output converters are predominantly dc/dc converters which give only multiple dc outputs for various applications and do not have ac at the output. The authors of [11][12][13] discuss hybrid multi-output converters which give two simultaneous output, one ac and one dc, but they are not able to give multiple ac outputs simultaneously.…”

Section: Introductionmentioning

confidence: 99%

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Three‐phase quasi‐Z source inverters with regulated multiple AC outputs for microgrid applications and three‐phase residential load

Sonkar

Lal

Singh

2020

IET Power Electronics

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In this study, two 3-φ quasi-Z source inverters (qZSIs) with multiple ac outputs are proposed. The proposed topologies are developed from qZSI to obtain parallel mode and series mode 3-φ multi-output inverters. In parallel mode, the topology yields n-number of parallel ac outputs with different voltages and currents for different load conditions. For series mode, topology yields n-number of series ac outputs with same voltages and same load currents. Unlike voltage source derived multi-output inverters, the proposed inverters have all inherent properties of qZSI, like shoot-through protection and both buckboost operations. For generating switching signals in these inverters, sinusoidal pulse width modulation with constant frequency shoot-through scheme is used. The proposed topologies fulfil more than one load demand at a time without any extra adaptor or regulator. The proposed inverters can be used for simultaneous multiple dc/ac power conversion for three-phase microgrid applications and three-phase residential loads. In this work, the proposed topologies with closed-loop control have been implemented for two inverter units, which is capable of supplying two ac outputs simultaneously. The mathematical modelling of the proposed topologies is carried out for performance analysis. The experimental results of 240 W lab prototypes have been presented to validate the proposed three-phase multi-output qZSIs.

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“…Similarly, the following can be obtained from (3) and 4and (8) and (9) using the Charge balance on capacitors C 1 and C 2…”

Section: St Intervalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Three‐phase quasi‐Z source inverters with regulated multiple AC outputs for microgrid applications and three‐phase residential load

Sonkar

Lal

Singh

2020

IET Power Electronics

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show abstract

“…The TL converters in [20][21][22][23] provide one output voltage that are not applicable in BDCMG. Other TL [24][25][26][27][28][29][30][31][32][33][34][35][36][37] and dualoutput converters [28][29][30]33], which are suitable for bipolar DC grid application, cannot transfer power between output terminals. Another dual-output converter is proposed in [34] which provides step-down and step-up voltage in output terminals, but it does not consider power transferring between output terminals.…”

Section: Introductionmentioning

confidence: 99%

Dual‐output DC/DC boost converter for bipolar DC microgrids

Rezayi

Iman‐Eini

Hamzeh

et al. 2019

IET Renewable Power Generation

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This study presents a new step-up DC/DC converter for bipolar DC microgrids. This relies on utilising a new converter topology which offers bipolar DC outputs with the key features of boosting the input voltage and balancing the output voltages. In addition, the proposed converter can transfer power from output terminals to the input side which leads to energy saving. Due to the microgrid's loading conditions, different modes can be considered, and the operational principles are analysed in details. Applying the circuit average method, the small signal model of the proposed converter is derived. Then the appropriate controllers are designed considering the small signal model of the converter in each mode. Finally, a prototype of the proposed converter has been implemented in the laboratory, and the experimental results have verified the converter's ability to balance the bipolar DC grid's voltages and its capability of transferring power in various microgrid's conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

“…The other configurations of SIDO converters have also been discussed in the literature for some other applications [21][22][23][24][25][26]. However, majority of them are only able to boost the voltage and have limited MPPT operating area [21,22]. Although, some researchers have also proposed the SIDO buck-boost converters [23][24][25][26], but the involvement of large number of components and need of transformer diminish their efficiency and make the system costly.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of a solar‐powered water pumping using improved SIDO buck–boost converter

Singh

Mishra

2019

IET Power Electronics

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This study proposes a low-cost solar-powered water pumping system (SPWPS) utilising a proposed single-input dualoutput (SIDO) buck-boost converter with an efficient control technique for the switched reluctance motor (SRM) drive. The newly designed buck-boost converter provides a continuous input and output current to the motor with a low ripple content. This converter is also capable to minimise the size of DC-link capacitor and to provide a balanced dual output voltage supply. Owing to the fundamental frequency switching of a split DC mid-point converter, there is a considerable reduction in the semiconductor losses and provides an opportunity to eliminate the sensors from the motor side. In addition, an improved perturb and observe (P&O) maximum power point tracking (MPPT) technique is also implemented in proposed system. The implemented MPPT algorithm has drift-free operation and an ability to control the pumping rate also at maximum PV power generation, which is usually difficult in standalone water pumping system. Test results are presented on an 875-Wp PV array fed a 1 hp pump to demonstrate sound agreement between the simulated and test results of proposed system.

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A High Step-Down Dual Output Nonisolated DC/DC Converter With Decoupled Control

Cited by 34 publications

References 19 publications

Three‐phase quasi‐Z source inverters with regulated multiple AC outputs for microgrid applications and three‐phase residential load

Three‐phase quasi‐Z source inverters with regulated multiple AC outputs for microgrid applications and three‐phase residential load

Dual‐output DC/DC boost converter for bipolar DC microgrids

Performance analysis of a solar‐powered water pumping using improved SIDO buck–boost converter

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