A Transformerless Intelligent Power Substation: A three-phase SST enabled by a 15-kV SiC IGBT
Citations
117 citations
Cites background from "A Transformerless Intelligent Power..."
...In traditional designs, the isolation is implemented with transformers [3], [9], [20]–[24]....
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117 citations
Cites background from "A Transformerless Intelligent Power..."
...Similar to SSTs, SSFCLs and SSCBs can be realized by both Si and SiC devices....
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...Also, as discussed above, SiC based converter, such as SST, are being developed for shipboard and train as well....
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...Also note that some equipment, such as SST, SSFCL, and SSCB, are not limited to utility application but can be leveraged to any applications with electric power system, such as shipboard, electrified train....
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...SiC devices can improve and impact power electronics in several ways [2]: 1) At converter level, through substituting Si devices directly or simplifying circuit topologies, SiC devices can improve converter efficiency, reduce cooling needs, and reduce active and passive component numbers and size, with their high voltage, low loss and fast switching capabilities; 2) At system level, SiC based converters can have better dynamic performance and more system functionalities as a result of their high frequency capability and high control bandwidth enabled by fast switching speed, and 3) SiC can enable new applications, such as high-efficiency high-density solid-state transformers (SST) and high speed motor drives....
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...7 shows a prototype SST based on 10-kV, 120-...
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106 citations
Cites background from "A Transformerless Intelligent Power..."
...Erenow, there are many similar researches, not only in traction onboard application, but also in the utility gird application, and the concepts such as solid-state transformer [8], universal and flexible power management [9], power electronic transformer [10], smart energy router [11], [12], single-phase solid-state power substation [13], medium-frequency transformer link [14], and transformerless intelligent power substation [15] were proposed in succession....
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95 citations
95 citations
Cites background from "A Transformerless Intelligent Power..."
...Conversely, a nonmodular system is based on a single power converter and usually takes advantage of high-voltage, wide-bandgap semiconductors [17], [18]....
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...For the semiconductors, Silicon Carbide (SiC) MOSFETs with very low on resistance (RDS(on)) have been used....
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...Special devices with high-voltage capability, such as 10 kV SiC metal-oxide– semiconductor field-effect transistor (MOSFET) [18] or 15 kV SiC MOSFET [17], are needed to handle the MV level in the power converter....
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References
2,056 citations
"A Transformerless Intelligent Power..." refers methods in this paper
...Modular 3L-NPC Converter for TIPS Based on the switching loss measurements, the hardswitching frequency limits of the 15-kV SiC IGBT were evaluated and demonstrated on a 10-kV dc–dc boost converter [10]....
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...The AFEC dc bus (22 kV) is converted to a LV-side dc bus (800 V) using an HF dc-link, enabled by a three-phase dual active bridge converter (DABC) [10]....
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1,870 citations
"A Transformerless Intelligent Power..." refers background in this paper
...Also, it cannot be too close to the dominant lower-order harmonics, like the fifth and seventh, to prevent harmonics being amplified in the supply [18]....
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942 citations
307 citations
"A Transformerless Intelligent Power..." refers background in this paper
...L2 ^ h This results in 90 mH for L1 and 180 mH for L2 [17]....
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252 citations
"A Transformerless Intelligent Power..." refers background in this paper
...Background Si-based power semiconductor devices have been widely used for several decades over a wide range of voltage and power levels [1]....
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