Modeling of multi-phase DC-DC converter with a compensator for better voltage regulation in DC micro-grid application

Krishna, D.S.G.; Patra, Monika

doi:10.1109/scopes.2016.7955589

Cited by 5 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Three parallel converters are used in this topology, as shown in Figure 5(b). The operation of IBC is based on applying identical pulses with shifting the pulses of the switches by [19,24]. The switching signals and inductor currents are demonstrated in Figure 5(d).…”

Section: Structure and Control Of The Proposed System Modelmentioning

confidence: 99%

See 1 more Smart Citation

Investigation and analysis of interleaved dc-dc boost converter for grid-connected photovoltaic energy system

Büyük

2022

MANAS Journal of Engineering

View full text Add to dashboard Cite

The installation of photovoltaic energy system has been increasing in recent years with the increment of the demand to the electrical power. PV system can be installed as either standalone or grid-connected. Grid-connected PV systems are more attractive because of not requiring a storage system. In this study, a three-leg interleaved boost converter for grid-connected PV system is proposed. In the proposed system, a 10.6 kW grid-connected PV system is designed and modelled in a simulation environment. The proposed model is analysed in comparison with the conventional dc-dc boost converter topology under variations of irradiance and temperature. The comparison of two systems is performed according to input current ripple ratio and THD value of the grid current. The simulation results show that the proposed topology has lower current ripple and THD value comparing with the conventional topology.

show abstract

Section: Structure and Control Of The Proposed System Modelmentioning

confidence: 99%

“…In earlier studies, conventional boost converter topology is used with PV system. However, the PV current has a high ripple ratio when the conventional boost converter is used [10,11,19,20]. The high current ripple ratio in PV side effects total harmonic distortion (THD) value of current injected to the grid.…”

Section: Introductionmentioning

confidence: 99%

Investigation and analysis of interleaved dc-dc boost converter for grid-connected photovoltaic energy system

Büyük

2022

MANAS Journal of Engineering

View full text Add to dashboard Cite

show abstract

“…Most of the applications found in the literature of interleaved converters in microgrids are related to the connection of DC loads, energy storage systems or generation sources to a microgrid [32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Control Design, Stability Analysis and Experimental Validation of New Application of an Interleaved Converter Operating as a Power Interface in Hybrid Microgrids

et al. 2019

View full text Add to dashboard Cite

This paper presents a new and specific use of a bidirectional interleaved converter to perform a power interface in hybrid microgrids. The converter is responsible for regulating the power flow between the direct-current (DC) microgrid and the rest of the hybrid microgrid by controlling the DC microgrid voltage. The authors present a detailed modeling of the mentioned system in order to develop the system control design and a stability analysis. In addition, the authors propose a new control design strategy aiming at improving the voltage control disturbance rejection characteristic, while maintaining a good dynamic behavior regarding the reference tracking functionality. In this hybrid microgrid topology, a back-to-back converter connects the main grid to the AC microgrid. The main objective of this converter is to provide a high-power-quality voltage to critical and sensitive loads connected to the microgrid. The interleaved converter adjusts the DC microgrid voltage according to the operational voltage of the back-to-back converter DC link. In the DC microgrid case, the variation of load and generation connection could lead to serious voltage sag and oscillations that could be harmful to the sensitive loads. The voltage controller must be capable of rejecting these disturbances in order to maintain a high-power-quality voltage. Furthermore, experimental results are provided in order to validate this specific application of the interleaved converter and the presented control design strategy.

show abstract

“…In addition to their unlimited input fuels, they are perceived as economical replacement for non-renewable energy sources such as diesel and natural gas power plants, due to their reduced carbon emission and enriched power quality. As the output of these RES is either dc or ac [2] that must be converted to dc for operation of Modern Technological Systems (MTS) such as dc machines, data centres and Adjustable Frequency Drives (AFDs), these MTS could form a cluster if operated concurrently from these sources. Operation of these MTS in cluster form represents dc microgrid [3] where the MTS denote the dc loads that are either directly powered by RES or via dc-dc converter depending on the required operating dc voltage level.…”

Section: Introductionmentioning

confidence: 99%

Tank Circuiting of 3-Pole PV Based DC Microgrid for Pole-to-Pole Voltage Balancing

Giwa

Habtay

2019

2019 54th International Universities Power Engineering Conference (UPEC)

View full text Add to dashboard Cite

This paper presents a limit-based approach in improving transient performance of tank-circuited 3-Pole PV Based DC Microgrid (3-PPDM) during zero to non-zero insolation transition of the solar irradiance profile. This approach is necessitated due to the transient behavior of the microgrid during the above-mentioned transition that results into huge voltage sag which appears to violate the conditions set for desirable operation of the dc loads. The tank-circuited 3-PPDM is conceived to mimic, under set conditions, operational feature of grid-connected three-phase ac microgrid where transformer is not required at distribution level for the provision of different voltage levels (phase and line) operation within the ac microgrid. 3-PPDM is developed with PV Based DC Microgrid connected to ac grid via single stage dc link and 3-Level Voltage Source Converter (3L-VSC). The dc loads are directly connected to the dc link and operated at high and low voltage levels without the employment of dc-dc converters. These voltage levels are established via the support of the three poles created by two serially connected centre-tapped capacitors meant primarily for improving the harmonic performance of the 3L-VSC. The observed huge voltage sag is technically linked to abrupt change in the high dc link reference voltage of the dc link PI controller during zero irradiance to low voltage of the PV power optimizer at the transition point. Subsequently, a limit-based perturb and observe maximum power point tracking (P&O MPPT) technique was employed as corrective measure. The concept of the technique is to determine the transition point and assign suitable predetermined value that is within the technical constraint of the microgrid as the reference voltage of the dc link. The simulation results of this approach prove the efficacy of the techniques as the set conditions are successfully met within considerable time, leading to an improvement in the transient performance of the microgrid.

show abstract

Modeling of multi-phase DC-DC converter with a compensator for better voltage regulation in DC micro-grid application

Cited by 5 publications

References 11 publications

Investigation and analysis of interleaved dc-dc boost converter for grid-connected photovoltaic energy system

Investigation and analysis of interleaved dc-dc boost converter for grid-connected photovoltaic energy system

Control Design, Stability Analysis and Experimental Validation of New Application of an Interleaved Converter Operating as a Power Interface in Hybrid Microgrids

Tank Circuiting of 3-Pole PV Based DC Microgrid for Pole-to-Pole Voltage Balancing

Contact Info

Product

Resources

About