A DC–DC Converter With Quadratic Gain and Bidirectional Capability for Batteries/Supercapacitors

Pires, V. Fernão; Foito, Daniel; Cordeiro, Armando

doi:10.1109/tia.2017.2748926

Cited by 87 publications

(43 citation statements)

References 50 publications

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“…The DAB converter shown in Figure 10 has been widely used in DC distribution systems, and it is selected for the UPS due to its various advantages, such as a bidirectional power flow capability, a zero voltage switching (ZVS) capability, and a galvanic isolation [18]. Compared with the conventional DC-DC converters used for UPS system [9,10], the DAB converter can provide the…”

Section: Dual-active-bridge Converter With Protection Algorithmmentioning

confidence: 99%

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Analysis and Design of Three-Phase Buck Rectifier Employing UPS to Supply High Reliable DC Power

et al. 2020

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In the DC distribution system, to step down the DC voltage level from the AC grid voltage, the conventional topologies require multiple power conversion stages and bulky line-frequency transformers, which degrade their power density and cost-effectiveness. In addition, the conventional topologies suffer from a shoot-through problem resulting in their low system reliability. In this paper, to overcome the above issues, systematic design approaches of a three-phase buck rectifier with an uninterruptible power supply (UPS) and a protection algorithm are proposed to obtain the high reliability of the DC distribution system, which can deal with fault conditions and can regulate the output voltage level. It only requires a single stage of the three-phase buck rectifier. Also, a thyristor switch is added without any commutation circuits to cut off the output from the fault circuit. The shoot-through faults do not occur in the buck rectifier, leading to high reliability. A dual-active-bridge (DAB) DC-DC converter is applied as the UPS to supply the electric power from the battery when the buck rectifier is shut down under the fault conditions. Finally, the protection algorithm is proposed to detect the fault conditions and to regulate the output voltage level.

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Section: Dual-active-bridge Converter With Protection Algorithmmentioning

confidence: 99%

“…By using DC-DC converters, an uninterruptible power supply (UPS) system has been developed to provide electric power for the output voltage regulation under power disruptions [9,10]. However, when the output terminal is shorted by shoot-through faults in the main AC-DC rectifier, the UPS cannot regulate the output voltage.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of Three-Phase Buck Rectifier Employing UPS to Supply High Reliable DC Power

et al. 2020

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“…Other quadratic converter topologies were presented in [20,21], for driving the Light Emitting Diode, but the step-down voltage version. Besides these applications, a quadratic converter was used as a battery charger in [22]. In this case the system was developed to contemplate a high power-factor.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, we have (21) and (23), where Ro represents load resistance. The current ripple of inductor L2 has been normalized by dividing (16) and (18) by the output current of converter, which results in equations (22) and (24).…”

mentioning

confidence: 99%

Non-isolated Modified Quadratic Boost Converter with Midpoint Output for Solar Photovoltaic Applications

Shanmugasundaram¹,

Natarajan²,

Gopal³

2019

E3S Web Conf.

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This paper presents a boost DC-DC converter topology with non - isolated high gain and output midpoint, to boost the voltage obtained from solar photovoltaic panels. The three-level boost converter is coupled to the output port of the single-switch quadratic boost converter to derive the proposed converter topology. The voltage gain of the proposed converter is greater than that of the classical boost converter. The voltage stress on the switches of the proposed converter is equal to half of the converter output voltage. Static analysis, operating modes, experimental waveforms in continuous current conduction and discontinuous current conduction modes are shown. A 520 W prototype converter was implemented in the laboratory and its results are presented.

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“…The photovoltaic power generation is clean power source and battery is used as both source and load. The solar power is generated and fed into the grid using bidirectional converter [3]- [5]. During day time the solar generates power and transferred to grid system.…”

Section: Introductionmentioning

confidence: 99%

Voltage Regulation in BDC Based on Fuzzy Logic Controller using Solar Power Generation

Balaji,

Vidhyalakshmi

2019

IJEAT

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The PhotoVoltaic (PV) based grid system coupled with Bidirectional DC-DC Converter (BDC) utilize Fuzzy Logic Controller (FLC) for increasing voltage gain and reduce the settling time of DC link voltage than conventional is presented. BDC satisfied the load requirements, and control the power flow from different sources such as PV, grid, and battery. However, problems in conventional system are high Total Harmonic Distortion (THD), DC link voltage gain and settling time of capacitor voltage. The generated power is used for improving the power quality at the output of the inverter using Sliding Mode Controller (SMC). The converter and inverter operate has bidirectional performance and utilize the hybrid power generation as mentioned. The battery can act as a load based on operating modes of BDC and power generation. It provides a comparative analysis of Proportional Integral (PI) and FLC method that is effectively performs harmonic reduction in BDC.

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A DC–DC Converter With Quadratic Gain and Bidirectional Capability for Batteries/Supercapacitors

Cited by 87 publications

References 50 publications

Analysis and Design of Three-Phase Buck Rectifier Employing UPS to Supply High Reliable DC Power

Analysis and Design of Three-Phase Buck Rectifier Employing UPS to Supply High Reliable DC Power

Non-isolated Modified Quadratic Boost Converter with Midpoint Output for Solar Photovoltaic Applications

Voltage Regulation in BDC Based on Fuzzy Logic Controller using Solar Power Generation

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