A New Low-Cost Battery Charger with High Efficiency

AC/DC转换器用于许多应用，如可再生能源系统，储能系统和电动汽车。AC/DC转换器的主要应用之一是电池充电器。从本质上讲，电池充电器将交流电转换为直流电，以便从公用电网为电池充电。非常高的需求，特别是来自汽车行业的需求，推动了全球电池市场的指数级增长，超过600亿美元。因此，最近对高性能电池充电器的需求非常高。目前的电池充电器通常利用一个两级功率转换系统来给电池充电。两级功率转换效率低，性能差。此外，功率转换器的热管理是具有挑战性的，因为它的效率低（通常风扇和/或大型散热器用于安全的热操作）。Delta-Q科技公司正在寻求一种具有成本效益的解决方案，以提供非常高效的电池充电。因此，提出的研究计划的主要目标是设计和实现电池充电器的单级功率转换系统。单级功率转换系统基于一种新的功率转换器系列，能够在不增加系统额外成本的情况下提高性能。该转换器将利用最少数量的无源元件，从而为该应用提供具有成本效益的解决方案。这笔拨款将支持基于所提议的电源电路拓扑的电池充电器原型的设计和实施。该原型机将在Delta-Q的测试平台上进行评估，以确认其优越的性能。该项目将帮助Delta-Q开发高性能电池充电应用的尖端技术。此外，开发高性能电池充电器将使加拿大处于电池充电技术的前沿。

AC/DC converters are used in many applications such as renewable energy systems, energy storage systems,and electric vehicles. One of the main applications of AC/DC converters is in battery chargers. Essentially,battery chargers convert AC power to DC power in order to charge a battery from the utility grid. Very highdemand, especially from the automotive industry, has driven the exponential growth of the global batterymarket to over $60 billion. Thus, there has recently been a very high demand for high performance batterychargers.Current battery chargers usually utilize a two-stage power conversion system in order to charge the battery.Two-stage power conversion results in low efficiency and poor performance. Also, the thermal management ofthe power converter is challenging due to its low efficiency (usually fans and/or large heatsinks are used tohave safe thermal operation).Delta-Q Technologies is seeking for a cost-effective solution that provides very efficient battery charging.Thus, the main objective of the proposed research program is to design and implement a single-stage powerconversion system for a battery charger. The single-stage power conversion system is based on a new family ofpower converters, which is able to enhance the performance without adding extra cost to the system. Thisconverter will utilize minimum number of passive components, leading to a cost-effective solution for thisapplication.This grant will support the design and implementation of a battery charger prototype based on the proposedpower circuit topology. This prototype will be evaluated using the test platform at Delta-Q in order to confirmits superior performance. This project will help Delta-Q develop cutting-edge technology for high performancebattery charging applications. Furthermore, developing high performance battery chargers will place Canada atthe forefront of battery charging technology.