Results 1 to 10 of about 1,019,029 (303)

A class of analog CMOS circuits based on the square-law characteristic of an MOS transistor in saturation [PDF]

, 1979
The examined class of circuits includes voltage multipliers, current multipliers, linear V-I convertors, linear I-V convertors, current squaring circuits, and current divider circuits.
Bult, Klaas, Wallinga, Hans
core   +4 more sources

Synchronization and Symmetrization of the Main Voltages of Transformer-Based Power Electronic Convert-ers in the Overmodulation Zone of Voltage Source Inverters

Elektronnaya Obrabotka Materialov
This article discusses the features of the synchronous regulation of inverter blocks of two topologies of the transformer-based photovoltaic installations based on two and three three-phase voltage source inverters operating in a specific over-modulation
V. Oleschuk
openalex   +2 more sources

Combined PV-Wind Hosting Capacity Enhancement of a Hybrid AC/DC Distribution Network Using Reactive Control of Convertors and Demand Flexibility

Sustainability, 2022
The integration of Renewable Energy Sources (RESs) into distribution networks has increased in recent years due to numerous advantages. However, the RESs are intermittent and uncertain therefore may cause various limitations such as high lines loading ...
Moein Taghavi, Hamed Delkhosh, Mohsen Parsa Moghaddam, A.R. Sheikhi Fini   +3 more
semanticscholar   +1 more source

DC‐link low‐frequency current and voltage ripple analysis in multiphase voltage source inverters with unbalanced load

IET Electric Power Applications, 2022
Inverter's performance and operating mode may be negatively affected by inverter input (dc‐link) current and voltage ripple. It is a common experience that even theoretically balanced loads with perfectly balanced supply voltages, such as multiphase ac ...
Marija Vujacic, Obrad Dordevic, Riccardo Mandrioli, Gabriele Grandi   +3 more
doaj   +1 more source

Hybrid low switching frequency modulation strategy with high dynamic response for high‐power voltage source converter

IET Electric Power Applications, 2023
For high‐power converters, the low switching frequency (SF) modulation represented by selective harmonic elimination pulse width modulation (SHE‐PWM) is crucial to reduce the switching loss and enhance the efficiency with a good steady‐state performance.
Bo Guan, Xuyang Yan
doaj   +1 more source

Fast and fault‐tolerant model predictive control of MMCs under selective harmonic elimination

IET Generation, Transmission & Distribution, 2023
Selective harmonic elimination (SHE) is a suitable pulse‐width modulation (PWM) technique for some applications of modular multilevel converters (MMC) with lower number of semiconductor submodules (SM).
Ardavan Mohammadhassani, Ali Mehrizi‐Sani   +1 more
doaj   +1 more source

Modular multilevel converter‐based voltage source converter high‐voltage direct current valve operating test circuit

IET Power Electronics, 2023
It is very important to obtain high reliability in the high‐voltage direct current (HVDC) system operation because of extremely high and huge power capacity.
Chi‐Hwan Bae, Hak‐Soo Kim, Eui‐Cheol Nho   +2 more
doaj   +1 more source

Operation and coordination control scheme of an enhanced AC–DC hybrid microgrid under abnormal distribution network

IET Power Electronics, 2023
Considering that the AC–DC hybrid microgrid (HMG) is connected to the low‐voltage distribution network (DN) where voltage faults occur most commonly, the fault ride‐through (FRT) capability and power quality performance of the HMG under abnormal DN ...
Yi Du, Huadong Sun, Chao Zheng
doaj   +1 more source

Assessment and enhancement control for small‐signal voltage stability of VSC‐HVDC systems supplying passive industrial loads

IET Generation, Transmission & Distribution, 2023
This paper presents a comprehensive assessment for the small‐signal voltage stability of voltage source converter (VSC)‐HVDC systems supplying industrial loads represented by the induction motors (IMs) and provides a stability enhancement control for the
Yicheng Xue, Zheren Zhang, Wen Hua, Guoteng Wang, Zheng Xu, Wei Dong   +5 more
doaj   +1 more source

The transient instability mechanism and stability‐enhanced LVRT control for VSC riding‐through severe grid voltage sag

IET Renewable Power Generation, 2023
As the grid‐connected interface device of wind and photovoltaic power generation, the voltage source converter (VSC) must pass the low voltage ride‐through (LVRT) test. However, existing literature demonstrates that under weak grid conditions, there is a
Huiqiang Sun, Xinchun Lin, Guangzhou Huang, Jiayan Zhang, Dan Liu, Kezheng Jiang, Yong Kang   +6 more
doaj   +1 more source