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Front-End Power Converter Topologies for Plug-In Electric Vehicles
Published in Md. Rabiul Islam, Md. Rakibuzzaman Shah, Mohd Hasan Ali, Emerging Power Converters for Renewable Energy and Electric Vehicles, 2021
Chandra Sekar S., Asheesh K. Singh, Sri Niwas Singh, Vassilios G. Agelidis
A resonant LLC converter for PHEV charger is shown in Figure 5.9. A constant maximum power method is implemented for charging the nonlinear loads like lithium-ion battery [21]. As shown in reference [21], for PHEVs, full-bridge topology is much suited then half-bridge topology for the high-power applications. Duty cycle operates on 0.5 and 180° phase shift to create symmetric waveform. Here, the LLC alone not responsible for the voltage conversion; it also depends on load and inductance. Another main advantage of the resonant converter is that the soft-switching performance decreases the switching losses. The switching speed is adjusted to attain the maximum value to buck the input voltage. Here, the conversion gain (Fnw) can be expressed as: Fnw=Π2l1+l1cos-1(1Mmin(1+l))
High-Frequency Quαsi-Resonαnt and Resonant Converters
Published in Yim-Shu Lee, Computer-Aided Analysis and Design of Switch-Mode Power Supplies, 2017
Quasi-resonant converters are a class of converters that make use of reactive components to create a zero-voltage condition for the switch to turn on or a zero-current condition for the switch to turn off. Quasi-resonant converters are, however, different from resonant converters in the following aspects: Whereas the resonant circuit in a quasi-resonant converter is only a means to create a zero-voltage or zero-current condition for the power switch to turn on or off, the resonant circuit in a resonant converter is an integral part of the power conversion circuit.The resonant circuit in a quasi-resonant converter can be associated with a power switch to form a resonant switch. Without such a resonant circuit, a quasi-resonant converter will revert back to a normal square-wave converter. However, the same is not true for a resonant converter.
Force-System Resultants and Equilibrium
Published in Richard C. Dorf, The Engineering Handbook, 2018
These converters use full-wave rectifiers at the output, and they are generally referred to as resonant converters. A number of resonant converter configurations are realizable by using various resonant tank circuits; the three most popular configurations are the series resonant converter (SRC), the parallel resonant converter (PRC), and the series-parallel resonant converter (SPRC), as shown in Figure 120.23.
ITBC Controlled IPWM for Solar Based Wide Range Voltage Conversion System
Published in IETE Journal of Research, 2023
This paper proposes a bidirectional micro-inverter based on a voltage-controlled IPWM converter for solar PV systems. The proposed micro-inverter consists of two stages: the resonant converter stage and the IPWM stage. The resonant converter stage is responsible for resonating the input and output capacitances and inductances, while the IPWM stage is responsible for controlling the output voltage and frequency. The proposed micro-inverter offers several advantages over conventional micro-inverters. First, the bidirectional capability allows for energy to flow in both directions, which enables the use of energy storage systems such as batteries or capacitors. Second, the resonant converter topology improves efficiency and reduces size. The paper is organised into five sections. In-phase, high-voltage pulse width modulation (IPWM) resonant controlled converter operation is discussed in Section II. Elaborated working principles, control strategies, characteristics, and design considerations are also presented in Section III. Section IV deals with experimental verification of the proposed problem. Finally, the concept conclusion and future extension are in Section V.
GMAW power supply based on parallel full-bridge LLC resonant converter
Published in International Journal of Electronics, 2022
Kaiyuan Wu, Yifei Wang, Xuanwei Cao, Jiatong Zhan, Xiaobin Hong, Tong Yin
For the above reasons, the full-bridge LLC resonant converter has been widely used in power supplies for communication systems, electric vehicle charging, photovoltaic power generation systems, and other fields. Saket et al. (2019) studied LLC resonant converters in communication system power supplies and proposed a new planar transformer winding method to significantly reduce the common mode noise of the converter. Shen et al. (2018) applied a full-bridge LLC resonant converter with series-parallel connected transformers to the on-board charger of an electric vehicle to reduce transformer loss and improve heat dissipation compared with traditional LLC resonant converters with only a single transformer. Beiranvand et al. (2011) designed a silicon carbide (SiC) MOSFET-based LLC resonant converter for wide-range voltage sources with a switching frequency of 300 kHz, power density of 3.42 kW/L, and peak discharging efficiency of 96%. Li and Shi (2019) applied the method for the design and optimisation of bidirectional LLC to residential photovoltaic power generation systems and achieved a charging mode efficiency of 98.39% and a discharging mode efficiency of 97.8%.
Overview of High-Step-Up DC–DC Converters for Renewable Energy Sources
Published in IETE Technical Review, 2018
Subhransu Padhee, Umesh Chandra Pati, Kamalakanta Mahapatra
Some of the most popular resonant converter topologies are series resonant converter (SRC), parallel resonant converter (PRC), series-parallel resonant converter (SPRC), and LLC resonant converter. A comparison of different half-bridge resonant converter topologies has been studied in [70]. Apart from resonant technique, there are other soft-switching techniques such as quasi-resonant and multi-resonant techniques which are used to design a soft-switching-based resonant converter [71].