The integrated operation method of emergency generator system for commercial building applied DC distribution system

Hong, Seok-Jin; Cho, Seung-Hyun; Kang, Kyung-Min; Won, Chung-Yuen

doi:10.1109/icems.2017.8056398

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…As SC is a high power and low energy density device, and possess a large number of charge/discharge cycles in comparison to batteries, it compensates cranking delay, sluggish response and abrupt loading of DG. In addition to this, SC counterbalances the dynamic power fluctuations due to abrupt fall/rise in solar PV/load powers so that the stress on battery is diminished and its life can be prolonged further [19]. Furthermore, other applications of SCs are found in transportation system (i.e.…”

Section: Configurationmentioning

confidence: 99%

“…Hence, FSDG dominates VSDG and finds wide potential in low voltage and medium power applications. However, both types of DGs causes DC bus voltage deviation and instability due to cranking delay [18] and slow dynamic response [19], if the bus regulation role is switched to DG without prior standby operation mode. Therefore, the development of either new configurations or an effective management technique is needed to overcome the issues.…”

Section: Introductionmentioning

confidence: 99%

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Effective power management scheme for PV‐Battery‐DG integrated standalone DC microgrid

Pannala

Padhy

Agarwal

2020

IET Electric Power Applications

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Standalone DC microgrids (SDCMGs) are emerging as prominent solutions to remote customers. As these SDCMGs mainly depend on renewable energy sources to curb carbon emission, reliability of the system is lessened due to their intermittent nature. The battery could offer a solution to this problem as it is inherently enclosed by DC grid for power balancing, but the purpose may not be served completely due to high capital cost and maintenance. Thus, the diesel generator (DG) becomes a major alternative to overcome this issue because of low investment, high compatibility, and flexibility. However, DG inhibits with cranking delay, sluggish response and low fuel efficiency under frequent switching and variable loading scenarios. To suppress the issues, a new power management strategy (PMS) is developed to ensure proper coordination between different sources, storage devices and loads in SDCMG. In addition to this, an effective control scheme is also proposed to achieve seamless regulation of DC bus voltage even under extreme conditions. In this study, different SDCMG configuration is considered for testing and simulation of system is carried out in real‐time digital simulator to prove their viability. A scaled prototype is developed to validate simulation results and authenticate proposed PMS and control scheme.

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Section: Configurationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effective power management scheme for PV‐Battery‐DG integrated standalone DC microgrid

Pannala

Padhy

Agarwal

2020

IET Electric Power Applications

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“…In [8], [9] distributed UPS only for AC grids are introduced as well as the UPS standard IEC 62040−3 does only consider AC grids [10]. In [11] an UPS for DC microgrids in commercial buildings is outlined. However, there is only a consideration of the ESS control strategy in case of an emergency.…”

Section: A State Of the Artmentioning

confidence: 99%

Investigation on an AC Grid Failure Handling of Industrial DC Microgrids with an Energy Storage

Mannel

Tappe

Knochelmann

et al. 2019

2019 IEEE International Conference on Industrial Technology (ICIT)

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A new approach for more energy efficient industrial production processes are smart industrial direct current (DC) microgrids with one or more connections to the alternative current (AC) grid. The advantage of the DC-technology is an easier integration of renewable energies sources and energy storage systems (ESS). Different applications for ESS are possible, for instance an uninterruptible power supply (UPS) for a DC microgrid. Within this paper, a new handling concept for a mains supply failure (e.g. a blackout of the supplying AC grid) with a droop curve control is introduced. In this approach, the droop curve controlling the ESS is adapted, depending on the ESS' state of charge (SoC), which results in a droop curve with a hysteresis. This concept realizes the charging of the ESS only with recuperation energy, that occurs in the DC microgrid during the production process. Thus, all recuperation energy will be kept in the DC microgrid and a transformation of the energy in AC or an energy loss through braking resistors will be avoided. Furthermore, no additional energy is needed to charge the ESS. This increases the energy efficiency of the entire production process. The concept was verified in simulation and validated in experiment and it has shown a DC voltage deviation of less than two percent.

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The Bi-Directional Current-Fed Converter with Coupled-Inductor for ESS Application in LVDC

Park

Jung

et al. 2018

2018 21st International Conference on Electrical Machines and Systems (ICEMS)

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The integrated operation method of emergency generator system for commercial building applied DC distribution system

Cited by 3 publications

References 8 publications

Effective power management scheme for PV‐Battery‐DG integrated standalone DC microgrid

Effective power management scheme for PV‐Battery‐DG integrated standalone DC microgrid

Investigation on an AC Grid Failure Handling of Industrial DC Microgrids with an Energy Storage

The Bi-Directional Current-Fed Converter with Coupled-Inductor for ESS Application in LVDC

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