This paper reviews and discusses the state of the art of integrated switched-capacitor and integrated inductive power converters and provides a perspective on progress towards the realization of efficient and fully integrated DC–DC power conversion. A comparative assessment has been presented to review the salient features in the utilization of transistor technology between the switched-capacitor and switched inductor converter-based approaches. First, applications that drive the need for integrated switching power converters are introduced, and further implementation issues to be addressed also are discussed. Second, different control and modulation strategies applied to integrated switched-capacitor (voltage conversion ratio control, duty cycle control, switching frequency modulation, Ron modulation, and series low drop out) and inductive converters (pulse width modulation and pulse frequency modulation) are then discussed. Finally, a complete set of integrated power converters are related in terms of their conditions and operation metrics, thereby allowing a categorization to provide the suitability of converter technologies.
This article presents a novel impedance-source-based direct current (DC)-to-alternating current (AC)/DC converter (Z-Source DAD Converter). The Z-Source DAD converter converts the input DC voltage into AC or DC with buck or boost in the load voltage. This Z-Source DAD conversion circuit is a single-stage power conversion system. This converter circuit converts the input DC voltage into variable-magnitude output DC voltage or converts the DC voltage into a variable-magnitude output AC voltage. The higher voltage magnitude in boost mode can be controlled by controlling the shoot-through (ST) state timing of the converter. MATLAB-Simulink simulation and microcontroller-based hardware circuit results are presented to demonstrate power conversion with the buck and boost features of the Z-Source DAD converter for both types of output voltages. The simulation and experimental results show that the Z-Source DAD converter converts the given DC supply into AC or DC with buck or boost in the output load voltage.
As a developing country, India is about to commence the most enthusiastic electric-car transformation in the transportation sector. India is planning to be the first all-electric vehicle country by 2030. Compared to previous years, a booming in electric vehicle sale is clearly visible in the vehicle markets. However, the question is whether India is equipped to welcome this transformation. The purpose of electrification of a vehicle is to ensure a pollution-free transportation. As per the latest reports, out of the 300 GW of electricity produced in India, 80% is from thermal power plants. The pollution contribution by thermal power plants is unquestionable. So the cause of vehicle electrification is violated at this point. Apart from that, the grid effects of plugged in hybrid vehicles is another major issue. As India lies in a geographical condition of high solar energy exposure, integration of renewable energy to the charging stations, grid and facilitating the V2G implementation will support this endeavor as well as help to establish a sustainable transport system. This paper presents a case study of impacts and challenges of vehicle electrification venture in India. In the proposed renewable energy powered wireless charger system according to the Indian model, efficiency of 94% achieved, which can replace the present grid based wired charger used in India. The findings and statements are validated with PSIM simulations and data published from Govt. of India.
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