6.0kV, 100A, 175kHz super cascode power module for medium voltage, high power applications

Gao, Bo; Morgan, Adam J.; Yang, Xu; Zhao, Xin; Hopkins, Douglas C.

doi:10.1109/apec.2018.8341182

Cited by 19 publications

(11 citation statements)

References 8 publications

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“…One final topology was introduced in [20] by Gao et al This topology attempts to improve the SCS performance by reconfiguring the balancing network of the topology described in [2]. Experimental validation of this SCS was also carried out via DPT under a select range of operating conditions.…”

Section: Literature Reviewmentioning

confidence: 99%

“…For instance, the SCS designs in [2], [7], and [18] are rated for 5 A, 23 A, and 36 A, respectively. A singular exception is the SCS developed in [20], capable of handling current levels up to 100 A. In the present study, the prototype SCS is evaluated at current levels up to 200 A.…”

Section: Effective Turn-onmentioning

confidence: 99%

“…Total switching losses are also of significant importance for thermal design and application optimization. In the literature, the only paper that considers per-stage switching losses is [20]. In that particular manuscript, the per-stage switching losses are calculated using LTspice, but not corroborated experimentally.…”

Section: Per-stage and Total Switching Lossesmentioning

confidence: 99%

“…To illustrate the value of the metrics proposed in this paper, a subject SCS topology was selected from the literature for implementation. The selected topology is an adaptation of the design originally proposed by Gao et al in [20]. The baseline configuration, denoted as Configuration 1 in this study, incorporates a couple of fundamental changes compared to the design outlined in [20].…”

Section: Baseline Super-cascode Topology and Configuration Variants A...mentioning

confidence: 99%

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Novel Figures of Merit for Evaluating the Performance of the Super-Cascode Switch

Jimenez,

Lemmon,

Boutry

2024

IEEE Open J. Power Electron.

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The super-cascode switch (SCS) has gained significant attention in the last decade due to its ability to achieve medium-voltage ratings using low-voltage semiconductors. However, there exists a notable absence of quantitative metrics to effectively evaluate the performance of the SCS. This gap exists because the behavior of the SCS is different from that of a traditional semiconductor switch, and traditional semiconductor performance metrics are not adequate for its evaluation. The present manuscript addresses this gap by introducing new figures of merit that are designed to evaluate the unique characteristics of the SCS. The practical value of these metrics is also demonstrated through a set of experimental studies. By applying these new figures of merit to one of the best-performing SCS configurations described previously in the literature, several opportunities for improvement are revealed. The SCS prototype described in this paper is evaluated experimentally at bus voltage levels up to 3.5 kV and current levels up to 200 A, demonstrating substantial performance improvements relative to the baseline configuration from the literature. These improvements are the result of iterative refinements to the balancing network, which are selected through a process that is informed by the application of the proposed figures of merit.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Effective Turn-onmentioning

confidence: 99%

Section: Per-stage and Total Switching Lossesmentioning

confidence: 99%

Section: Baseline Super-cascode Topology and Configuration Variants A...mentioning

confidence: 99%

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Novel Figures of Merit for Evaluating the Performance of the Super-Cascode Switch

Jimenez,

Lemmon,

Boutry

2024

IEEE Open J. Power Electron.

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“…Unique combinations of different types of switches may also provide advantages. The series connection of MOSFETs and multiple JFETs to form super cascodes, for example, has resulted in switch arrays capable of holding off large voltages while also exhibiting extremely fast switching times and low power losses [112]. It should be noted, however, that the improved performance of the switch array comes at the cost of greatly increased complexity.…”

Section: Switchesmentioning

confidence: 99%

State-of-the-Art and Advancement Paths for Inductive Pulsed Plasma Thrusters

et al. 2020

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An inductive pulsed plasma thruster (IPPT) operates by pulsing high current through an inductor, typically a coil of some type, producing an electromagnetic field that drives current in a plasma, accelerating it to high speed. The IPPT is electrodeless, with no direct electrical connection between the externally applied pulsed high-current circuit and the current conducted in the plasma. Several different configurations were proposed and tested, including those that produce a plasma consisting of an accelerating current sheet and those that use closed magnetic flux lines to help confine the plasma during acceleration. Specific impulses up to 7000 s and thrust efficiencies over 50% have been measured. The present state-of-the-art for IPPTs is reviewed, focusing on the operation, modeling techniques, and major subsystems found in various configurations. Following that review is documentation of IPPT technology advancement paths that were proposed or considered.

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