International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 04 | Apr 2023
p-ISSN: 2395-0072
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PERFORMANCE EXPLORATION OF SINGLE PHASE DAB DC-DC CONVERTER UNDER LOAD VARIATION G. Jhansi Rani1, P. Srinivas2 1Research Scholar, EEE Department, OUCE, Osmania University, Hyderabad, India 2Professor, EEE Department, OUCE, Osmania University, Hyderabad, India
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Abstract - This article presents the performance analysis
while it was under the direction of TPS. On the basis of this, a discussion of the DAB converter's six different operational modes will follow. In order to improve the power quality of the grid, Allan Taylor et al., [6] presented a multiple-phaseshift control that makes it possible to implement a fixedswitching-frequency triple-phase shift (TPS) control at the light load. This control would be used at the light load. The dynamic behaviour of a dual active-bridge (DAB) is discussed in Kazuto Takagi's et al.'s [7] research paper. Jacob A. Mueller et. al., [8] offered a suggestion for generalized average models of dual active bridge (DAB) converters. The use of generalized average modeling necessitates making a compromise between the model's accuracy and its tractability. The authors Nie HOU et. al. [9] proposed a new hybrid control method that they called EPS-DPC. This technique is a combination of EPS-DPC. EPS-DPC control possesses notable characteristics, not only in terms of its efficiency but also of its dynamic performance. A complete optimization control approach was presented by Hou et al. [10] in order to increase the efficiency and dynamic response. Despite the widespread usage of this control method, however, the dynamic performance of the converters still has to be improved. A unique topology for a dc power electronic transformer (DCPET) is proposed by Jiepin Zhang et al. in their paper [11], which is intended for locomotives, ac/dc hybrid grids and dc distribution grids. The work of Shuai Shao and colleagues [12] presents a transformation in which distinct DAB working scenarios (forward/backward, buck/boost) might be comparable to one another. As a result, optimisation of only one scenario (forward/buck) is required to be performed. A unique neutral point clamped as DAB converter with a blocking capacitor was presented by Yang Xuan et al. [13] for use with ESS in dc micro-grids. A blocking capacitor in the primary loop of a conventional NPC DAB converter can match the transformer's primary and secondary winding voltage amplitudes when the voltage ratio is 0.25, 0.5, 0.75, or 1. A piecewise model of the modulation method was created by Amit Kumar Bhattacharjee and colleagues [14], which paves the way for analytical optimization. In addition, the optimization framework incorporates soft-switching conditions, which makes it possible to arrive at a comprehensive solution that lowers switching losses in addition to conduction losses. In conclusion, a hybrid controller that is based on generalized optimization has been suggested as a solution. Alber Filba-Martinez, et al. [15]
of single phase Dual Active Bridge (DAB) DC-DC converter under load variation. Two of the most important control goals for DAB DC-DC converters are to achieve a high efficiency and a quick dynamic response. This paper concentrated on the quick dynamic response of the DAB. The phase shift pulse width modulation (PWM) is adopted for the control of switches. The proposed configuration is verified in the Matlab Simulink environment. The performance parameter of load voltage and power is presented and analyzed. The projected configuration is presented with and without voltage controller. The proportional and integral (PI) controller is adopted as voltage controller in this paper. Key Words: DAB, DC-DC converter, Phase shift PWM, Proportional and Integral Controller, IGBT, Dynamic response.
1. INTRODUCTION Dual active bridge (DAB) DC-DC converters have many benefits, such as being able to send power in both directions, having a high power density, making zero-voltage switching easy to set up, and being easy to access for cascading and parallelism. As a consequence of this, these converters are utilised in a variety of applications, including distributed generating systems, DC-micro-grid systems, electric car charging systems, energy storage systems, and applications involving power electronic transformers in railway locomotives. Jan Riedel, et al. [1] investigated using these angles to selectively suppress various dc bus current harmonics over the converter's working range to reduce the size of the DAB dc bus bridge capacitors. Haochen Shi, et al. [2] presented a method for decreasing reactive power while utilising three levels of modulated phase-shift control. Their goal was to improve efficiency in an extensive operation setting. Jianqiang Liu, et al. [3] proposed a power electronic traction transformer (PETT) voltage balancing control approach using dual active bridge (DAB). Wensheng Song et al. [4] suggested a virtual direct power control (VDPC) strategy for DAB dc–dc converters that uses single-phase-shift control in order to deal with the extreme situations. An accurate and general model was presented by Anping Tong et al. [5] to characterise the analytic expressions of the DAB converter
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