Linear power flow formulations and optimal operation of three-phase autonomous droop-controlled Microgrids

Bassey, Ogbonnaya; Chen, Chen; Butler‐Purry, Karen L.

doi:10.1016/j.epsr.2021.107231

Cited by 19 publications

(9 citation statements)

References 19 publications

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“…The autonomous voltage inverter was implemented in the block "Inverter". The inverter scheme was selected with the block of PWM implementation [46][47][48]. As [38,43] propose a mathematical model of an asynchronous electric motor and [46][47][48] propose that of an autonomous voltage inverter, it was deemed unnecessary to provide these mathematical models in the present work.…”

Section: Adaptation Of the Existing Vector Control And Direct Torque ...mentioning

confidence: 99%

“…The inverter scheme was selected with the block of PWM implementation [46][47][48]. As [38,43] propose a mathematical model of an asynchronous electric motor and [46][47][48] propose that of an autonomous voltage inverter, it was deemed unnecessary to provide these mathematical models in the present work. The parameters of the traction motor and autonomous voltage inverter required to implement the simulation model are provided in Tables 1 and 2, respectively.…”

Section: Adaptation Of the Existing Vector Control And Direct Torque ...mentioning

confidence: 99%

“…The "Induction Motor" block incorporates the simulation model provided in [43]. The "Inverter" block implements the principal inverter circuit shown in [46][47][48]. As the electrical part of the asynchronous electric motor was made using the elements of the SIMSCAPE library of the MATLAB software environment, the "Inverter" block was implemented using the elements of the same library.…”

Section: Adaptation Of the Existing Vector Control And Direct Torque ...mentioning

confidence: 99%

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Analysis of the Efficiency of Traction Drive Control Systems of Electric Locomotives with Asynchronous Traction Motors

Goolak¹,

Liubarskyi

Riabov

et al. 2023

Energies

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An analysis of the operating conditions of the traction drives of an electric rolling stock with asynchronous traction motors was conducted. In the process of operation, the electric traction drive with both direct torque control and vector control was found to possibly experience unstable modes, both in terms of power supply and load. The models of electric locomotive traction drives with asynchronous electric motors with either vector or direct torque control were adapted to account for the possible presence of the aforementioned operational factors. As a result of the modeling, the starting characteristics of the electric traction drives with different control systems were obtained both in the absence and in the presence of power supply and load disturbances. The following cases were investigated for the drive with vector and direct torque control in the absence of power supply and torque disturbances: drive output at the rated speed of rotation of the electric motor shaft; 10% reduction in the rated speed; 10% increase in the rated speed. The comparison of the results obtained has demonstrated that, at lower than nominal frequencies, the electric traction drive with direct torque control has higher accuracy in its regulation of the rotational speed and torque, lower power consumption from the power supply, lower torque overshooting, but a higher level of torque pulsations than the electric traction drive with vector control. Meanwhile, at higher than nominal frequencies, the vector control has higher accuracy in its regulation of the speed, lower torque overshooting, shorter duration of transient processes, and lower torque pulsations than the direct torque control. Moreover, as a result of the investigations, the traction drive with direct torque control has been found to be more resistant to power supply and load disturbances. The results of this work are applicable to the investigation of the influence of electric traction drive control methods on the energy efficiency of the traction drive of an electric locomotive with an alternating current (AC).

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Section: Adaptation Of the Existing Vector Control And Direct Torque ...mentioning

confidence: 99%

Section: Adaptation Of the Existing Vector Control And Direct Torque ...mentioning

confidence: 99%

Section: Adaptation Of the Existing Vector Control And Direct Torque ...mentioning

confidence: 99%

See 1 more Smart Citation

Analysis of the Efficiency of Traction Drive Control Systems of Electric Locomotives with Asynchronous Traction Motors

Goolak¹,

Liubarskyi

Riabov

et al. 2023

Energies

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show abstract

“…Control scheme required running values of current and voltage coming out of filter unit for shaping of both AC current and voltage provided by inverter unit. The entire closed loop control technique provides additional phase angle regulation between AC voltage and current to minimize flow of reactive power [23]. THD of provided current from inverter unit maintain its value in-between 1-2 depending on THD of grid voltage in grid-tied low voltage AC-microgrid system.…”

Section: Control Scheme Of Pv Invertermentioning

confidence: 99%

Topological and Reliable based selection of Inverter module for PV application under standard parameters of Cost and life-Span

Sharma

Kaur

Sharma

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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With the advancement in manufacturing and fabrication process, utilization of PV energy systems is increased throughout the globe which leads to the increase of research over lifespan and reliability index on an entire PV system. This increment results in low average manufacturing as well running costs of the entire PV system. The most important portion of the PV system apart from the PV module is the inverter unit which provides conversion and synchronization between the PV system and OLGS. With vast research carried over design as well controlling the architecture of Inverter, it becomes a tedious task to choose the optimal design based on the application area and capital cost. In this paper, we discuss issues faced by the inverter units on the platform of reliability and life span along with the suitable survey. Further to conclude the work result of Inverter unit connected to selected PV module when connected to OLGS.

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“…Remolino et al 22 developed a simple LF method involving backward and forward for distribution systems possessing a number of PV nodes. Bassey et al 23 presented two linear LF methods involving approximations on current injections and distribution LF formulations, for islanded droopcontrolled microgrids. The method is non-iterative and can be extended to optimal LF.…”

mentioning

confidence: 99%

Soccer league optimization for load flow analysis of power systems

Srilakshmi¹,

Babu²,

Venkatesan

et al. 2021

Int J Numerical Modelling

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This paper proposes a generalized soccer league optimization (SLO) based load flow (LF) method suitable for both transmission and distribution systems. The LF problem is formulated as an optimization problem of lowering the sum of squares of active and reactive power mismatches at all busses, while taking the net corrections of bus voltage angles and magnitudes as unknown decision variables. The formulated problem is then solved using SLO, a population-based algorithm imitated from the behavior of team players of soccer league competition. The performances in respect of accuracy, robustness to different line r/x ratios, and computational efficiency are studied on six standard IEEE transmission and distribution systems and the results are presented.

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Linear power flow formulations and optimal operation of three-phase autonomous droop-controlled Microgrids

Cited by 19 publications

References 19 publications

Analysis of the Efficiency of Traction Drive Control Systems of Electric Locomotives with Asynchronous Traction Motors

Analysis of the Efficiency of Traction Drive Control Systems of Electric Locomotives with Asynchronous Traction Motors

Topological and Reliable based selection of Inverter module for PV application under standard parameters of Cost and life-Span

Soccer league optimization for load flow analysis of power systems

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