Dr YING LI's Outputs (27)

Output Current Limitation for ON–OFF Controlled Very-High-Frequency Class E DC–DC Converter (2021)
Journal Article
Li, Y., & Ruan, X. (2022). Output Current Limitation for ON–OFF Controlled Very-High-Frequency Class E DC–DC Converter. IEEE Transactions on Industrial Electronics, 69(11), 11826-11831. https://doi.org/10.1109/tie.2021.3116594

he on – off controlled very-high-frequency Class E dc–dc converter has been extensively investigated for achieving high power density and fast dynamic response. However, the basic on – off control cannot limit the output current at overload or short-... Read More about Output Current Limitation for ON–OFF Controlled Very-High-Frequency Class E DC–DC Converter.

Multipower-Level Hysteresis Control for the Class E DC–DC Converters (2019)
Journal Article
Li, Y., Ruan, X., Zhang, L., & Lo, Y.-K. (2020). Multipower-Level Hysteresis Control for the Class E DC–DC Converters. IEEE Transactions on Power Electronics, 35(5), 5279-5289. https://doi.org/10.1109/tpel.2019.2940043

Featured with simple topology and easy realization of zero-voltage-switching, the Class E dc-dc converter is preferable for very high-frequency application. In this article, a multipower-level (MPL) hysteresis control is proposed for the Class E dc-d... Read More about Multipower-Level Hysteresis Control for the Class E DC–DC Converters.

Variable Switching Frequency ON–OFF Control for Class E DC–DC Converter (2018)
Journal Article
Li, Y., Ruan, X., Zhang, L., Dai, J., & Jin, Q. (2019). Variable Switching Frequency ON–OFF Control for Class E DC–DC Converter. IEEE Transactions on Power Electronics, 34(9), 8859-8870. https://doi.org/10.1109/tpel.2018.2888926

The efficiency improvement of the on-off controlled Class E dc-dc converter operated at 20 MHz switching frequency is investigated in this paper. It is found that with the on-off control, the input power of the converter during the on mode increases... Read More about Variable Switching Frequency ON–OFF Control for Class E DC–DC Converter.

Optimized Parameters Design and Adaptive Duty-Cycle Adjustment for Class e DC-DC Converter with on-off Control (2018)
Journal Article
Li, Y., Ruan, X., Zhang, L., Dai, J., & Jin, Q. (2019). Optimized Parameters Design and Adaptive Duty-Cycle Adjustment for Class e DC-DC Converter with on-off Control. IEEE Transactions on Power Electronics, 34(8), 7728-7744. https://doi.org/10.1109/TPEL.2018.2881170

The Class E dc-dc converter, with a simple topology and zero-voltage-switching (ZVS) for the power switch, can operate at a switching frequency of up to megahertz. In this paper, an optimized ZVS operation condition for minimizing the switch voltage... Read More about Optimized Parameters Design and Adaptive Duty-Cycle Adjustment for Class e DC-DC Converter with on-off Control.

Maximum power point tracking algorithm for photovoltaic array under partial shading based on current property (2016)
Journal Article
Wang, Y., Li, Y., & Ruan, X. (2016). Maximum power point tracking algorithm for photovoltaic array under partial shading based on current property. Diangong Jishu Xuebao/Transactions of China Electrotechnical Society, 31(14), 201-210

As one of main forms of solar energy utilization, photovoltaic array is vulnerable to the shadow effect, thus its P-V output characteristic curve contains more than one peak. As a result, it is difficult for the conventional algorithms of maximum pow... Read More about Maximum power point tracking algorithm for photovoltaic array under partial shading based on current property.

A rapid tracking method of maximum power point for solar units in series under uneven solar irradiance (2015)
Journal Article
Wang, Y., Ruan, X., & Li, Y. (2015). A rapid tracking method of maximum power point for solar units in series under uneven solar irradiance. Zh¿nggÚo DiÀnji G¿ngchÉng XuÉbÀo, 35(19), 4870-4878. https://doi.org/10.13334/j.0258-8013.pcsee.2015.19.004

When several solar units are combined into one branch in series, the multi-peak phenomenon of the output power of the branch would appear because of the bypass diodes. Based on analyzing the operation principle of the circuit, it was found that the n... Read More about A rapid tracking method of maximum power point for solar units in series under uneven solar irradiance.

High-Accuracy and Fast-Speed MPPT Methods for PV String Under Partially Shaded Conditions (2015)
Journal Article
Wang, Y., Li, Y., & Ruan, X. (2016). High-Accuracy and Fast-Speed MPPT Methods for PV String Under Partially Shaded Conditions. IEEE Transactions on Industrial Electronics, 63(1), 235-245. https://doi.org/10.1109/TIE.2015.2465897

The photovoltaic (PV) string under partially shaded conditions exhibits complex output characteristics, i.e., the current-voltage (I-V ) curve presentsmultiple current stairs, whereas the power-voltage (P-V ) curve shows multiple power peaks. Thus, t... Read More about High-Accuracy and Fast-Speed MPPT Methods for PV String Under Partially Shaded Conditions.