A5101530420- Microgrid Control and Optimization
- Advanced DC-DC Converters
- Multilevel Inverters and Converters
- Semiconductor materials and devices
- Advanced Memory and Neural Computing
- Ferroelectric and Negative Capacitance Devices
- Analytical Chemistry and Sensors
- Gas Sensing Nanomaterials and Sensors
- Ga2O3 and related materials
- Electrochemical sensors and biosensors
- Wind and Air Flow Studies
- Conducting polymers and applications
- Islanding Detection in Power Systems
- GaN-based semiconductor devices and materials
- Electrochemical Analysis and Applications
- Osteoarthritis Treatment and Mechanisms
- Electrostatic Discharge in Electronics
- Advanced Measurement and Detection Methods
- Recycling and Waste Management Techniques
- Crystal structures of chemical compounds
- Advanced oxidation water treatment
- Organometallic Compounds Synthesis and Characterization
- Electronic and Structural Properties of Oxides
- Phase-change materials and chalcogenides
- Advanced Sensor and Energy Harvesting Materials
Taiwan Semiconductor Manufacturing Company (Taiwan)
2011-2024
Chang Gung University
2018-2023
National Tsing Hua University
1999-2022
Chang Gung Memorial Hospital
2020
National Taiwan University
2018
National Taiwan University of Science and Technology
2010-2015
Hungkuang University
2009-2010
National Sun Yat-sen University
1999
Battery-powered tiny-AI edge devices require large-capacity nonvolatile compute-in-memory (nvCIM), with multibit input (IN), weight (W), and output (OUT) precision to support complex applications, high-energy efficiency (EF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">MAC</sub> ), short computing latency (t xmlns:xlink="http://www.w3.org/1999/xlink">AC</sub> ) for multiply-and-accumulate (M operations. Due the low read-disturb-free voltage of...
Battery-powered edge-AI devices require nonvolatile computing-in-memory (nvCIM) macros for data storage and multiply-and-accumulate (MAC) operations. High inference accuracy requires MAC operations with high input (IN), weight (W), output (OUT) precisions. A energy efficiency <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$(\text{EF}_{\text{MAC}})$</tex> a short computing latency...
Compute-in-memory (nvCIM) macros based on non-volatile memory make it possible for artificial intelligence (AI) edge devices to perform energy-efficient multiply-and-accumulate (MAC) operations by minimizing the movement of data between processors and memory. However, nvCIM imposes tradeoffs energy efficiency, computing latency, readout accuracy against process variation. To overcome these challenges, this work proposed a macro featuring: 1) direct-current-free time-space-based in-memory...
In recent years, flexible magnetoelectronics has attracted a great attention for its intriguing functionalities and potential applications, such as healthcare, memory, soft robots, navigation, touchless human-machine interaction systems. Here, we provide the first attempt to demonstrate new type of magneto-piezoresistance device, which possesses an ultrahigh sensitivity with several orders resistance change under external magnetic field (100 mT). our Fe-Ni alloy powders are embedded in...
Soft magnetic powder cores with their high saturation flux density and low core loss are excellent alternatives for filter inductors in inverter-based applications. However, nonlinear current-dependent inductance characteristics pose a challenge control of grid-connected inverter LCL filter. In this paper, the variable conundrum is discussed modified direct digital method based on variable-structure estimation model that takes into consideration wide variation both inverter- grid-side...
STT-MRAM has been demonstrated as a viable embedded non-volatile memory (NVM) with 20-year data retention at 150°C, high write endurance (>1M cycles), and the ability to tolerate solder reflow [1]. However, for working applications, even higher endurance, fast speed, small size are necessary. By optimizing magnetic-tunnel-junction (MTJ) stack lower current, while relaxing requirements (e.g., 1 min @ 125°C), can achieve (>10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
High-performance InGaN-based p-i-n photodetectors (PDs) were fabricated using a typical light-emitting diode (LED) epitaxial structure and surface texturing. A multiple-quantum-well active-layer effectively mitigates the indium clustering problem achieves high rejection ratio scalability. Two types of texturing for enhancing spectral responsivity compared. High responsivities 0.21, 0.23, 0.24 A/W attained at wavelength 388 nm biases 0, -1.5, -3.0 V, respectively, corresponding to external...
Based on the comparisons of several inverter configurations in aspects efficiency, response, volume, current distortion, and price, this article, we present a feasible three-phase four-wire (3Φ4W) grid-connected hybrid-frequency parallel system (HbFPIS) with ripple compensation to achieve low distortion fast response. An HbFPIS consists low-frequency-high-power (LFHPI) high-frequency-low-power (HFLPI) connected parallel. LFHPI design results higher power output lower frequency (LF) switching...
This article presents a three-phase four-wire ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$3\Phi 4\text{W}$ </tex-math></inline-formula> ) hybrid frequency parallel uninterruptable power supply (HbFPUPS) with ripple compensation to reduce output voltage distortion and improve dynamic response for high UPS applications. An HbFPUPS is composed of low-frequency-high-power uninterruptible (LFUPS)...
For the first time, ultrafast laser annealed BEOL gate-all-around (GAA) transistor and FeFET memory were demonstrated with monolithic 3D near-memory-computing (NMC) circuit. The GAA MOSFETs employing picosecond visible dopant activation exhibit record-high Ion (nFETs=407 uA/um, pFETs=345 uA/um). FeFETs exhibits large window ΔV <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</inf> = 1.2V, more than 10 <sup...
This paper presents a sinusoidal pulsewidth modulation (SPWM) based direct digital control with average-voltage model (AVM) and division-summation process for paralleled three-phase three-wire (3φ3W) grid-connected converters to reduce circulating currents. With the control, plant of each single-phase converter can be derived directly, controller is then designed cover variation effects filter inductance grid voltage. Based on SPWM AVM over switching cycle, 3φ3W decomposed into three...
In this paper, a decoupled direct digital control with division-summation (D-Σ) process and average common-mode voltage model for LCL three-phase three-wire (3Φ3W) converters is proposed. Based on the within one switching cycle of converter operation, laws are by selecting proper form their duty ratios. Thus, can be derived conducted phase without coupling terms in natural frame, which results complete single-phase even under unbalanced or distorted grid-voltage conditions. Additionally,...
This paper presents the design and implementation of an improved ripple-compensation direct digital controlled three-phase four-wire (3Φ4W) grid-connected hybrid-frequency inverter system (HbFIS). The HbFIS consists a low-frequency-high-power (LFHPI) high-frequency-low-power (HFLPI) in parallel. With control, lower frequency current ripples are attenuated to smaller level without suffering from repetitive ripple estimation tracking. raises output ripples, resulting filter size weight. LFHPI...
This study presents design of D-Σ digital controlled hybrid-frequency inverters with LCL filter for grid-connected applications. Hybrid-frequency consist different frequencies and power ratings connected in parallel. The lower frequency inverter has higher rating, while the one. are to cancel out low-frequency switching-current ripples, their equivalent switching dynamic response dominated by high frequency, reducing size. With ratings, have extra scheduling control freedom. Moreover,...
High penetration of green energy has driven conventional utility grids into smart to accommodate dc appliances and various types equipment, increasing effectiveness, efficiency, resilience. In a grid, ac is harmonized with dc, therefore, multi-function converter required transfer power between grids. This paper presents system configuration, operational principle control high-power converters for smart-grid applications. Simulated experimental results from 350 kVA are used verify the...
In this paper, analytic duty cycle control laws for a three‐phase step up/down converter containing seven active switches are first derived to achieve clean sinusoidal input current, adjustable power factor, bidirectional flow capability and output DC voltage. Then model small signal by means of coordinate transformation, perturbation linearization. Finally, some simulation results also presented verify the validity theoretical results.
This paper presents a current ripple compensation algorithm for paralleled three-phase three-wire (3P3W) hybrid frequency inverter systems (HbFIS) which are feasible high power applications when using low- and high-speed switching devices. An HbFIS consists of two inverters connected in parallel, one is low-frequency-high-power (LFHPI), the other high-frequency-low-power (HFLPI). Using direct digital control HFLPI together with compensating caused by LFHPI, can reduce amplitude its overall...
In this letter, we compared the structural and sensing properties of CeTiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Ce xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> TiO xmlns:xlink="http://www.w3.org/1999/xlink">5</sub> films for electrolyte-insulator-semiconductor (EIS) pH sensors. The behavior these was characterized by Auger electron spectroscopy, atomic force microscopy, X-ray photoelectron spectroscopy. comparison with...
The title compound, C(11)H(18)N(2)S(4), was unexpectedly obtained during studies on the reactivity of complex tris-(acac-κ(2)O,O')gallium(III) (acac is acetyl-acetonate) with C(4)H(8)NCS(2)H in dichloro-methane. compound shows disordered two pyrrolidine rings major and minor occupancies 0.546 (4) 0.454 (4). Two (pyrrolidin-1-yl)carbothio-ylsulfanyl units are linked together through a methyl-ene C atom weak C-H⋯S inter-actions found.