Victor Adrian’s research while affiliated with Nanyang Technological University and other places

... The boost converter consists of several essential components, including a DC voltage source (Vin), a controlled switch (S), an inductor (L), a diode (D), a filter capacitor (C) and a load, as shown in Figure 2. Our study will focus on the converter's performance in continuous conduction mode (CCM), examining different operational states as a function of the position of the S switch. The ripple current ∆I L is typically set to 10% of the current passing through the inductor L [17]. The duty cycle (α) of the power converter is determined using the formula (1) where V in and V out represent the input voltage and the output voltage of the converter, respectively: ...

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Computational and dynamic performance of NN-based control in wind energy systems

... The ever-growing demand for compact, versatile, and portable electronic devices has propelled the development and refinement of small-sized DC-DC converters [1][2][3][4]. These converters play a crucial role in efficiently adjusting voltage levels within electronic circuits, catering to the diverse power requirements of various components. ...

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Integrated Interleaved Transformer in an Isolated Full-Bridge Buck Converter

... It is always preferable for a system to have the smallest footprint possible. Since inductors typically constitute a substantial portion of the total volume of power supplies [40][41][42][43], their volume is crucial. The performance of inductors is directly tied to their volume, as a smaller inductor provides less space for windings and core, influencing their efficiency. ...

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Compact Switched-Inductor Power Supplies: Design Optimization with Second-Order Core Loss Model

... Moreover, the poor quality factor of the on-chip passives [5], [6], contributes further to lowering the PAE. Typically, traditional linear PAs (such as class AB), operate in the back-off region from the maximum output power [7] for being able to accommodate large Peak Average Power Ratio (PAPR) QAM/OFDM modulated signals. In back-off, the efficiency dramatically drops. ...

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A 28GHz, Switched-Cascode, Class E Amplifier in 22nm CMOS FDSOI Technology

... 8 Due to the resonant operation method, it is difficult to control the output power fluently; a timeaveraged burst method is often used. 9 A digital control power supply 10,11 has attracted recent attention because of the lower price, good operation with improved and assimilated power electronic peripherals, such as ADC (Analog to Digital Converters) converters 12 and PWM (Pulse more efficient instrument than autoclaving, which takes approximately one hour. 14. ...

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Design and Development of a Digital Controlled Dielectric Barrier Discharge (DBD) AC Power Supply for Ozone Generation

... The circuit is designed via optimization based on an objective function to achieve minimal losses in the power semiconductors and the inductor. The authors of [10] proposed a modified pulse-width modulation (PWM) method that achieves good harmonic composition and low noise. The Wrapped-Around Phase-Shift (WAPS) control is used for the RWAPPM-type multiphase converter, which achieves a significant reduction in the output ripple noise voltage compared to other control algorithms. ...

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Design Considerations of Multi-Phase Buck DC-DC Converter

... Random signal generators enable the flexible setting of the probability distribution of random signals, greatly promoting the widespread application of random signals across various industries [1][2][3][4][5][6][7][8][9][10][11][12][13]. Chaotic signals exhibit quasi-randomness, are relatively simple to implement, and have lower costs. ...

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Research on the Strategy for the Flexible Configuration of Chaotic Signal Probability Distribution and Its Application

... The integrator and filters provide high gain and stability to the loop while the modulator generates a signal to be amplified by the output stage. The most common modulation technique is the previously mentioned PWM but other methods are also possible: bangbang control [115], delta-sigma [116] and self-oscillating [123]. The output stage is responsible for taking the modulated signal and amplifying it to a level suitable for driving the MEMS speaker. ...

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Recent Trends in Structures and Interfaces of MEMS Transducers for Audio Applications: A Review

... When multiple pulse producers can be multiplied to form various pulse shapes, there are problems with excessive hardware shortages, complex pulse producers, or poor compatibility of the on-chip (SoC) CMOS system. [14] An alternative method is a digital-to-analog converter (DAC) generator that can reduce these weaknesses by combining a UWB compatible waveform with the corresponding digital inputs [7]. It should be noted that the DAC-based pulse producer has three profits. ...

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Design of a Single-Core Digital-to-Analog Converter with Ultra-Wideband and Low Power Consumption for CUWB-IR Applications

... On the other hand, many studies have been conducted on the application of the randomized PWM (RanM) techniques for EMI mitigation. Those randomized techniques spread the power of the signal into a broad band of frequencies and change the shape of the interference spectrum [16][17][18]. As a result, the level of the spectrum is significantly reduced. ...

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Deterministic vs. Random Modulated Interference on G3 Power Line Communication