Results 51 to 60 of about 1,694,500 (183)

Time to Breakdown for Type I Motor Winding Insulation Under High‐Frequency High‐Slew‐Rate Square Wave Voltages

open access: yesHigh Voltage, EarlyView.
ABSTRACT The emergence of (ultra)wide bandgap ((U)WBG)‐based devices has significantly enhanced performance in high‐frequency switching applications, enabling breakthroughs in electric transportation, aerospace, and renewable energy systems. However, it also presents considerable challenges to insulation systems, such as electric motor winding ...
Easir Arafat   +3 more
wiley   +1 more source

Signal Extraction and Clustering of Partial Discharge in Motor Insulation Using Temporal Correlation‐Based Clustering

open access: yesHigh Voltage, EarlyView.
ABSTRACT As one of the important links in energy transition and global energy interconnection, electric vehicles (EVs) are becoming increasingly major research topics in the field of energy. Partial discharge (PD) identification under repetitive impulsive voltages plays a pivotal role in evaluating the health of electric vehicle (EV) motor insulation ...
Li Wang   +7 more
wiley   +1 more source

Nonlinear Conductive Materials for Adaptive Electric Overstress Control: Theory, Tailoring and Applications

open access: yesHigh Voltage, EarlyView.
ABSTRACT Artificial intelligence computing, renewable energy integration and transportation electrification are driving electrical and electronic equipment towards higher power densities, higher voltage ratings and greater miniaturisation. Under these trends, insulation systems have become a key bottleneck for reliability and compactness.
Zhiwen Huang   +6 more
wiley   +1 more source

Digitally generated pulse width modulation transmitted over optical fibre

open access: yes, 1993
Analogue generated pulse width modulation (APWM) suffers from a non-linearity problem associated with the reference signal when operated at high modulation indices.
Ghassemlooy, Zabih   +2 more
core   +1 more source

Research Progress on Electrical Insulation Under Superimposed Voltage With High‐Frequency Harmonics in New‐Type Power Systems

open access: yesHigh Voltage, EarlyView.
ABSTRACT A new‐type power system serves as a critical technical support for the integration of new energy, and its secure and stable operation is of great importance. However, the extensive utilisation of power electronic devices leads to power equipment insulation being subjected to electrical stresses of high‐frequency harmonics, which can easily ...
Shengtao Li   +4 more
wiley   +1 more source

SISTEM PENGENDALI KECEPATAN PUTARAN MOTOR DC BERDASARKAN (PULSE-WIDTH MODULATION) PWM BERBASIS ARDUINO MEGA [PDF]

open access: yes, 2016
The electric motor is one of the electrical equipment of the most widely used in industries, one of which is a DC motor that is used to supply DC loads. The advantages of DC motors is relatively easy to obtain and set the speed of rotatio. To control the
ANDRIANTO, SUGENG
core  

Advances in Polymeric Insulating Materials: Global Progress in These 10 Years

open access: yesHigh Voltage, EarlyView.
ABSTRACT This journal, High Voltage, celebrates its 10th anniversary in 2026. To commemorate this significant milestone, this comprehensive special review article showcases the latest global research progress and cutting‐edge advancements in polymeric insulating materials, a critical component that underpins high‐voltage systems and is vital to modern ...
Yoshimichi Ohki   +10 more
wiley   +1 more source

A.C. ELECTRIC DRIVE WITH PULSE-WIDTH MODULATION CONTROL [PDF]

open access: yes, 2014
The paper proposes an original method for pulse-width modulation (PWM) of A.C. voltage. The method makes it possible to improve harmonic composition of the voltage.
V. P Belyaev
core  

Comparison of pulse position modulation and pulse width modulation for application in optical communications

open access: yes, 2007
Different modulation methods for optical wireless have different power and bandwidth efficiencies. Each approach has a direct bearing on the quality and effectiveness of wireless optical communications.
Green, Roger, Fan, Yangyu
core   +1 more source

Robust Analytical LUT‐Based DPC for a Weak‐Grid‐Connected DFIG with Low‐Cost Implementation

open access: yesVector: The Journal of Engineering, Volume 2027, Issue 1, January/December 2027.
Analytical lookup‐table‐based direct power control of a grid‐connected doubly‐fed induction generator driven by two‐level voltage source inverter with stability proof and robustness. ABSTRACT This paper focuses on analytical lookup‐table (LUT)‐based direct power control (DPC) of a grid‐connected doubly‐fed induction generator (DFIG) driven by two‐level
Abdelhak Djoudi   +3 more
wiley   +1 more source

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