Results 21 to 30 of about 182 (112)
Jurnal Rekayasa ElektrikaThe increasing demand for electricity supply is evident across various modern industrial sectors. Electrification advancements in the transportation industry aim to address environmental and energy issues and continue to evolve.
Rio Pratama +3 more
doaj +3 more sources
Energies, 2022 A full-bridge diode-clamped multilevel LLC resonant converter suitable for power conversion systems that use high input voltage, such as railway vehicles, is proposed in this paper. In order to eliminate the voltage deviations of the capacitors connected
Min-Sup Song, Jae-Bum Lee
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± 180° Discontinuous PWM for Single-Phase PWM Converter of High-Speed Railway Propulsion System
Energies, 2020 As high-capacity alternating current/direct current (ac/dc) power conversion systems, single-phase pulse-width modulation (PWM) converters used in high-speed railway propulsion systems adopt high-voltage Insulated-Gate Bipolar Transistors (IGBTs) as ...
Min-Sup Song, In-Ho Cho, Jae-Bum Lee
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IEEE AccessDiscontinuous pulse width modulation (DPWM) is useful to improve the efficiency of a single-phase five-level T-type neutral-point-clamped (5LT-NPC) inverter and the reliability of the power devices.
Kyu-Jin Min, Ui-Min Choi
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IEEE Open Journal of Power ElectronicsParalleling three-phase, two-level voltage-sourced converters (2L-VSCs) allows the system to handle higher currents and power levels. In such systems, interleaved switching can be employed to improve output waveform quality, reduce filtering requirements,
Tharindu Senavirathna +2 more
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IET Power Electronics, Volume 16, Issue 12, Page 2103-2120, 16 September 2023., 2023 Compared to Si‐IGBTs, SiC MOSFETs bring higher efficiency, higher power density, and smaller size and mass to electrified vehicle application without increasing system cost. Stronger electromagnetic interference, reliability issues, potential motor insulation failure, and heat dissipation issues are the main technical challenges.
Bufan Shi +6 more
wiley +1 more source
Discontinuous PWM Techniques of Three-Leg Two-Phase Voltage Source Inverter for Sonar System
IEEE Access, 2020 Pulse width modulation (PWM) methods are important for the detection performance of a sound navigation and ranging (sonar) system because they determine the output noise of the system.
Jaehyuk Choi, Dong-Hun Lee, Hyungsoo Mok
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Discontinuous PWM Modulation for Active Power Filters Operating in Disturbed Environments [PDF]
, 2023 Active power filters (APFs) are power converters able to compensate for the distorted current components injected into the mains by non-linear loads. To reduce the APF switching losses and thus to allow using higher switching frequencies, discontinuous ...
Mallemaci, Vincenzo +3 more
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IET Electric Power Applications, Volume 16, Issue 2, Page 190-205, February 2022., 2022 Abstract Thermal stress is one of the most important factors leading to power module failure. Under the load condition of high current with low fundamental frequency or largely changed load current, it would cause high junction temperature swing amplitude (JTSA) of chips, which could accelerate the failure of power module.
Wei Wang +3 more
wiley +1 more source
Discontinuous Modulation for Improved Thermal Balance of Three-Level 1500-V Photovoltaic Inverters under Low-Voltage Ride-Through [PDF]
, 2021 This paper investigates the thermal behavior of a 90-kW/1500-V, three-level, neutral-point-clamped (3L-NPC), single-stage PV inverter during low-voltage ride-through (LVRT) operation.
Francesco Iannuzzo +11 more
core +1 more source