Results 31 to 40 of about 18,913 (265)

Sufficient Stochastic Maximum Principle in a Regime-Switching Diffusion Model [PDF]

open access: yes, 2011
We prove a sufficient stochastic maximum principle for the optimal control of a regime-switching diffusion model. We show the connection to dynamic programming and we apply the result to a quadratic loss minimization problem, which can be used to solve a
Catherine Donnelly, Donnelly, Catherine
core   +1 more source

An Overall Minimized Switching Loss Discontinuous PWM Strategy for Neutral Point Clamped Three Level Inverters

open access: yesIEEE Access, 2019
Aim at reducing switching loss (SL) of neutral-point clamped three-level inverter (NPC TLI) as much as possible, a novel SL minimized discontinuous pulse width modulation (SLMDPWM) strategy is proposed in this paper.
Weidong Jiang   +4 more
doaj   +1 more source

IGBT Power Module Design for Suppressing Gate Voltage Spike at Digital Gate Control

open access: yesIEEE Access, 2023
This paper clarifies the effect of gate inductance $L_{g}$ inside IGBT modules on gate voltage spikes when a digital gate driver is employed. Three IGBT modules with different $L_{g}$ were fabricated to implement double pulse tests by conventional ...
Zaiqi Lou   +5 more
doaj   +1 more source

Modeling Inverter Losses for Circuit Simulation [PDF]

open access: yes, 2004
Transformer-like inverter models can represent a very good alternative to common switch-diode models for simulation, reducing convergence problems and/or calculation time.
Scapino, Federico   +3 more
core   +1 more source

Evaluation of Frequency and Temperature Dependence of Power Losses Difference in Parallel IGBTs

open access: yesIEEE Access, 2020
With the development of high power converters, safe operation of IGBT modules with parallel chips is of increasing importance. IGBT can work normally in safe range in the initial operation even if current imbalance is happening.
Jianxiong Yang   +3 more
doaj   +1 more source

A Discontinuous Modulation Method with Variable Clamping Interval Width of the Modular Multilevel Converter

open access: yesWorld Electric Vehicle Journal, 2022
The modular multilevel converter (MMC) has been widely used because of the advantages of easier expansion, lower harmonic distortion and higher output voltage level.
Xin Gu   +3 more
doaj   +1 more source

A Switching Approach to Packet Loss Compensation Strategy [PDF]

open access: yesIEEE Access, 2019
In networked control systems, a zero or hold compensation strategy is usually used for the missing signal when a packet is lost. In this paper, a switching approach is proposed for the consecutive loss compensation, where the packet loss between sensor and controller is modeled as an i.i.d. Bernoulli process.
Zibao Lu, Shangpeng Zhong, Liguo Qu
openaire   +2 more sources

A Performance Optimized CSTBT with Low Switching Loss

open access: yesMicromachines, 2023
A novel Performance Optimized Carrier Stored Trench Gate Bipolar Transistor (CSTBT) with Low Switching Loss has been proposed. By applying a positive DC voltage to the shield gate, the carrier storage effect is enhanced, the hole blocking capability is improved and the conduction loss is reduced.
Hang Xu   +4 more
openaire   +3 more sources

Good-deal bounds in a regime-switching diffusion market [PDF]

open access: yes, 2011
We consider option pricing in a regime-switching diffusion market. As the market is incomplete, there is no unique price for a derivative. We apply the good-deal pricing bounds idea to obtain ranges for the price of a derivative.
Catherine Donnelly, Donnelly, Catherine
core   +1 more source

A Converter Based Switching Loss Measurement Method for WBG Device

open access: yes, 2023
With the advent of WBG device like GaN and SiC, frequency has been pushed to very high in order to achieve the higher power density. Consequently, switching loss becomes a large part of device loss in high-frequency applications. Traditional double pulse
Nabih, Ahmed   +4 more
core   +1 more source

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