Evaluation of Gallium Nitride Transistors in Electronic Power Conditioners for TWTAs

Blanes, J. M.; Garrigós, A.; Gutierrez, R.; Carrasco, J.A.; Maset, E.; Ejea, J.B.; Sanchis-Kilders, E.; Ferreres, A.; Lizan, J. L.

doi:10.1109/aero.2015.7119140

Cited by 3 publications

(6 citation statements)

References 5 publications

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“…1(b)). The output voltage of the power supply for a space TWTA is regulated by the first stage while the second stage is unregulated with fixed frequency and fixed duty cycle, as a DC transformer [1], [4]. Therefore, the unregulated second stage is required to boost the input voltage, provide the galvanic isolation while keeping high efficiency [5], which poses great challenges on the high frequency LCLC resonant converter.…”

Section: Introductionmentioning

confidence: 99%

Sequential Offline-Online-Offline Measurement Approach for High-Frequency LCLC Resonant Converters in the TWTA Applications

Zhao

Zhang

2020

IEEE Trans. Ind. Electron.

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Section: Introductionmentioning

confidence: 99%

Sequential Offline-Online-Offline Measurement Approach for High-Frequency LCLC Resonant Converters in the TWTA Applications

Zhao

Zhang

2020

IEEE Trans. Ind. Electron.

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“…The major disadvantage of the conventional battery/SC [7], [28] and the SC/battery HESSs [11] [31], [34] is that an energy source must operate alongside the DC-DC converter, thus aggravating the energy loss in the power converter. The hybrid topology HESS that incorporates an additional power diode into the battery/SC HESS solves the aforementioned problem [6].…”

Section: Design Of the Compound-type Hessmentioning

confidence: 99%

“…As a result, battery cells are difficult to balance under extreme working conditions [10]. These drawbacks mainly drive the development of auxiliary energy sources and the design of energy management strategies for extending battery life [4], [7], [11], [12].…”

Section: Introductionmentioning

confidence: 99%

“…A key factor in designing a HESS that performs perfectly is to maximize the energy stored in SCs [6], [18]. In previous studies, SCs were used as low-pass filters in passive parallel configuration [11], [18]. This configuration did not employ DC-DC converters; thus, there was no energy loss in power converters.…”

Section: Introductionmentioning

confidence: 99%

“…SCs can be used as auxiliary equipment to absorb braking energy during regenerative braking and to prevent batteries from being subjected to peak power under low-energy and high-power densities [16], [17]. Thus, battery life can be extended in EV applications, especially under start-stop or acceleration [11], [17]. A key factor in designing a HESS that performs perfectly is to maximize the energy stored in SCs [6], [18].…”

Section: Introductionmentioning

confidence: 99%

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Compound-Type Hybrid Energy Storage System and Its Mode Control Strategy for Electric Vehicles

Wang¹,

Cao²,

Li³

et al. 2015

Journal of Power Electronics

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This paper proposes a novel compound-type hybrid energy storage system (HESS) that inherits the unique advantages of both battery/supercapacitor (SC) and the SC/battery HESSs for electric vehicles (EVs). Eight operation modes are designed to match this system. A mode control strategy is developed for this HESS on the basis of these modes, and five classes of operation modes are established to simplify this strategy. The mode control strategy focuses on high operating efficiency and high power output. Furthermore, the compound-type HESS is designed such that the SC is the main priority in braking energy absorption. Thus, this HESS can operate efficiently and extend battery life. Simulation results also show that the compound-type HESS can not only supply adequate power to the motor inverter but can also determine suitable operation modes in corresponding conditions. Experimental results demonstrate that this HESS can extend battery life as well. The overall efficiency of the compound-type HESS is higher than those of the battery/SC and the SC/battery HESSs.

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A Family of DC Transformer (DCX) Topologies Based on New ZVZCS Cells With DC Resonant Capacitance

Qin

Zhang

2017

IEEE Trans. Power Electron.

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The series resonant soft-switching topology is widely used in high density DCX products due to its zero switching loss. But, the conventional series resonant converter is a dual end topology, which results in complex circuit structure and high cost. In order to simplify the resonant DCX topology and reduce the cost, a novel resonant cell named input current fed (ICF) cell is proposed in this paper, which can be applied to single ended Forward topologies. The zero-voltage-switching (ZVS) on and quasi-zero-current-switching (ZCS) off for switch are both achieved. According to the duality theory of circuit, another output current sink (OCS) cell is derived. Based on the proposed ZVZCS ICF cell, two cells are interleaved to construct several dual end cells, which can be extended to push-pull, full bridge, half bridge and other dual end topologies. Based on these cells, a new family of ZVZCS resonant DCX is derived, which are suitable for high frequency and high efficiency applications with various power levels. The operating principle and characteristics of the cells and topologies are verified by simulations and experimental results.

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Evaluation of Gallium Nitride Transistors in Electronic Power Conditioners for TWTAs

Cited by 3 publications

References 5 publications

Sequential Offline-Online-Offline Measurement Approach for High-Frequency LCLC Resonant Converters in the TWTA Applications

Sequential Offline-Online-Offline Measurement Approach for High-Frequency LCLC Resonant Converters in the TWTA Applications

Compound-Type Hybrid Energy Storage System and Its Mode Control Strategy for Electric Vehicles

A Family of DC Transformer (DCX) Topologies Based on New ZVZCS Cells With DC Resonant Capacitance

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