Browsing NTNU Open by Author "Zhou, Jiayu"
Now showing items 1-8 of 8
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A Carrier-Based Discontinuous PWM for Single and Parallel Three-Level T-Type Converters with Neutral-Point Potential Balancing
Zhou, Jiayu; Ojo, Joseph Olorunfemi; Tang, Fen; Haruna, Josiah; Loh, Poh Chiang (Peer reviewed; Journal article, 2021)The three-level converters have an inherent problem of the neutral-point (NP) voltage unbalance due to the split dc-link capacitors. This NP voltage unbalance degrades the output voltage/current waveform quality. A ... -
Conditional Pulse Density Modulation for Inductive Power Transfer Systems
Zhou, Jiayu; Guidi, Giuseppe; Chen, Shuxin; Tang, Yi; Suul, Jon Are Wold (Peer reviewed; Journal article, 2023)This letter proposes a conditional pulse density modulation (PDM) method for Inductive Power Transfer (IPT) systems, which can automatically adapt the generated output patterns to effectively suppress current/power ripples. ... -
Ensuring Soft Switching During Transient Operations of Wireless Power Transfer Systems with Frequency Control
Chen, Shuxin; Zhou, Jiayu; Li, Yaohua; Guidi, Giuseppe; Suul, Jon Are Wold; Tang, Yi (Chapter, 2022)The high switching frequency of wireless power transfer systems makes soft switching important due to switching losses. In the current literature, numerous solutions have been proposed for maintaining soft switching within ... -
Evaluation and Suppression of Oscillations in Inductive Power Transfer Systems with Constant Voltage Load and Pulse Skipping Modulation
Zhou, Jiayu; Guidi, Giuseppe; Ljøkelsøy, Kjell; Suul, Jon Are Wold (Peer reviewed; Journal article, 2023)This paper identifies how Constant Voltage Load (CVL) characteristics cause Inductive Power Transfer (IPT) systems to exhibit a poorly damped oscillation mode. When operated with pulse skipping strategies such as Pulse ... -
Finite-Control-Set Model Predictive Control for Inductive Power Transfer Charging EV systems with Constant Voltage Load
Karami Hassan Abadi, Zeinab; Zhou, Jiayu; Guidi, Giuseppe; Suul, Jon Are Wold (Chapter, 2023)This paper presents a finite-control-set model predictive control (FCS-MPC) strategy for achieving power control in inductive power transfer (IPT) -based electric vehicle (EV) charging systems. The proposed control method ... -
A Hysteresis ON-OFF Control Method of Inductive Power Transfer Systems with Low Output Ripples and Fast Transient Responses
Zhou, Jiayu; Guidi, Giuseppe; Chen, Shuxin; Tang, Yi; Suul, Jon Are Wold (Chapter, 2022)This paper proposes a hysteresis ON-OFF control method for inductive power transfer (IPT) systems with low output ripples and fast transient responses. System power is regulated by skipping pulses, thus achieving zero ... -
Impact on Efficiency of Inductive Battery Charging System by Sub-Resonant Frequency Control during Large Variations in Coupling Conditions
Zhou, Jiayu; Guidi, Giuseppe; Suul, Jon Are Wold (Chapter, 2020)This paper presents a detailed analysis of power transfer efficiency for inductive battery charging systems designed for sub-resonant frequency control during large variations in coupling conditions. It is first demonstrated ... -
Modeling and control of inductive power transfer systems with constant voltage load
Zhou, Jiayu (Doctoral theses at NTNU;2023:107, Doctoral thesis, 2023)In recent decades, wireless power transfer (WPT) systems have been used in more and more fields, such as portable electronic devices, implanted medical devices, power system monitoring devices, underwater vehicles, etc. ...