Loss comparison of different nine-switch and twelve-switch energy conversion systems

Bahman, Amir Sajjad; Loh, Poh Chiang; Qin, Zian; Blaabjerg, Frede

doi:10.1109/apec.2014.6803326

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…With the increased number of switches, the switching losses and complexity of the circuit will be more which requires complex control technique. Hence 9-s UPQC has been proposed with nine switches for switching loss reduction and to create simplicity of the circuit [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Power Quality Investigation by Reduced Switching UPQC

Kumar¹

2020

EJEE

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In this paper, nine switches UPQC topology with different control techniques have been depicted and compared their performances to accomplish clear inspection of the best control techniques. As conventional UPQC having twelve switches of six legs enhances the switching losses, circuit complication, costly etc. Hence nine switches UPQC topology is intended to reduce the switching losses, complexity, size and cost. This proposed topology has only three legs with three switches in each leg making total number of nine switches. The three control techniques such as Unit vector template, PQ theory and Synchronous reference frame theory have been employed in the nine switch UPQC topology. The simulation has been carried out separately for each control technique in MATLAB/SIMPOWER environment and results have been verified for higher efficiency of nine switch UPQC topology. The comparative THD of source currents and load voltages under these control techniques have been analysed. The obtained THD values are below 5% as per IEEE-519 standard.

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Section: Introductionmentioning

confidence: 99%

Power Quality Investigation by Reduced Switching UPQC

Kumar¹

2020

EJEE

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“…Since industries demand for both higher power densities and higher power levels, more power losses will be dissipated and a large amount of heat will be generated in the power electronic devices [3], [4]. As one of the key components in power electronic systems, IGBT modules are exposed to wear-out failures like bond-wire lift-off or solder cracking due to adverse thermal cycling caused by heat dissipation [5], [6].…”

Section: Introductionmentioning

confidence: 99%

A novel 3D thermal impedance model for high power modules considering multi-layer thermal coupling and different heating/cooling conditions

Bahman

Blaabjerg

2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Thermal management of power electronic devices is essential for reliable performance especially at high power levels. One of the most important activities in the thermal management and reliability improvement is acquiring the temperature information in critical points of the power module. However accurate temperature estimation either vertically or horizontally inside the power devices is still hard to identify. This paper investigates the thermal behavior of high power module in various operating conditions by means of Finite Element Method (FEM). A novel 3D thermal impedance network considering the multi-layer thermal coupling among chips is proposed. The impacts to the thermal impedance by various cooling and heating conditions are also studied. It is concluded that the heating and cooling conditions will have influence on the junction to case thermal impedances and need to be carefully considered in the thermal modelling. The proposed 3D thermal impedance network and the extraction procedure are verified in a circuit simulator and shows to be much faster with the same accuracy compared to FEM simulation. This network can be used for life-time estimation of IGBT module considering the whole converter system and more realistic loading conditions of the device.

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Characteristic comparison of reduced switch converter based energy conversion systems

Rauf¹,

Khadkikar²

2015

2015 IEEE 8th GCC Conference &Amp; Exhibition

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This paper presents a characteristic comparison among reduced semiconductor equivalents of dual back-to-back converter. Being widely reported, the nine-switch and ten-switch based converters are considered for the comparative analysis. Conduction losses of both these converters are compared to identify the merits and drawbacks as they are used in dc-ac, acdc, dc-dc or ac-ac energy conversion systems. Although nine and ten switch converters have been reported to experience higher dc-link voltage leading to additional losses, this is not the case in general and therefore requires a comprehensive study to evaluate the real standing of each. An analytical model is employed to evaluate the losses in each switch for different operational modes Simulation results are included to verify the analytical evaluation.

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Loss comparison of different nine-switch and twelve-switch energy conversion systems

Cited by 3 publications

References 12 publications

Power Quality Investigation by Reduced Switching UPQC

Power Quality Investigation by Reduced Switching UPQC

A novel 3D thermal impedance model for high power modules considering multi-layer thermal coupling and different heating/cooling conditions

Characteristic comparison of reduced switch converter based energy conversion systems

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