Comprehensive Analysis and Experiments of RB-IGCT, IGCT With Fast Recovery Diode and Standard Recovery Diode in Hybrid Line-Commutated Converter for Commutation Failure Mitigation

Xu, Chaoqun; Yu, Zhanqing; Chen, Zhengyu; Zhao, Biao; Wang, Zongze; Ren, Chunpin; Zeng, Rong

doi:10.1109/tie.2022.3158019

Cited by 6 publications

(1 citation statement)

References 25 publications

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“…After the AC filter capacitor C a , C b , C c , the output currents are i ao , i bo , i co . For high-power CSI, H6 inverter bridge is mainly composed of six low-speed power switches (e.g., GTOs, IGCTs) (Xu et al, 2023). When IGBTs are selected, it requires series connected power diodes to increase the reverseblocking (RB) capability.…”

Section: Conventional Current Source Inverters Topology and Its Switc...mentioning

confidence: 99%

A strategy for improving the SHEPWM commutation speed of CSI through hybrid switches

Wang

Xia²,

Rui³

et al. 2023

Front. Energy Res.

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High-power current source inverters (CSI) usually operate at a low switching frequency to reduce switching loss. To suppress low-order harmonics and simplify filter design, the selective harmonic elimination pulse width modulation (SHEPWM) technique is a feasible common modulation strategy in industrial applications. This paper proposes an operational strategy that uses an H7 current source inverter (H7-CSI) with hybrid switches to perform the SHEPWM technique. On the basis of retaining the conventional H6 inverter bridge, the commutation speed of the CSI is improved by an additional shunt-connected high-performance power switch. The proposed scheme solves the problem that the CSIs built with low-speed switches (such as GTOs) may have difficulty for implementing the setting pulse widths of null states, while further reducing the switching losses at an acceptable cost. In addition, mitigating the influence of overlap-time by optimizing the driving signal of the H6 converter bridge. Finally, simulation and experiments have verified the effectiveness of the proposed CSI scheme.

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Section: Conventional Current Source Inverters Topology and Its Switc...mentioning

confidence: 99%

A strategy for improving the SHEPWM commutation speed of CSI through hybrid switches

Wang

Xia²,

Rui³

et al. 2023

Front. Energy Res.

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show abstract

Experimental Findings and Theoretical Explanations on Time-Varying Immunity of LCC-HVdc Inverters to Commutation Failure Caused by Sending End AC Faults

Xiao

Lan

et al. 2023

IEEE Trans. Ind. Electron.

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Step-Current-Approximation Modulation of Multilevel-CSC With Near-Power-Frequency Switching for High-Current Variable-Voltage Application

Bai

Zhao

Zhou

et al. 2023

IEEE Trans. Power Electron.

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Comprehensive Analysis and Experiments of RB-IGCT, IGCT With Fast Recovery Diode and Standard Recovery Diode in Hybrid Line-Commutated Converter for Commutation Failure Mitigation

Cited by 6 publications

References 25 publications

A strategy for improving the SHEPWM commutation speed of CSI through hybrid switches

A strategy for improving the SHEPWM commutation speed of CSI through hybrid switches

Experimental Findings and Theoretical Explanations on Time-Varying Immunity of LCC-HVdc Inverters to Commutation Failure Caused by Sending End AC Faults

Step-Current-Approximation Modulation of Multilevel-CSC With Near-Power-Frequency Switching for High-Current Variable-Voltage Application

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