WiTricity Leverages Magnetic Resonance for Flexible Wireless Charging
公司规模
SME
地区
- America
国家
- United States
产品
- WiTricity Technology
- COMSOL Multiphysics
技术栈
- Magnetic Resonance
- COMSOL Multiphysics
- Electromagnetic Simulation
实施规模
- Enterprise-wide Deployment
影响指标
- Productivity Improvements
- Customer Satisfaction
- Innovation Output
技术
- 分析与建模 - 预测分析
- 应用基础设施与中间件 - 数据可视化
- 网络与连接 - 无线局域网
适用行业
- 消费品
- 汽车
- 医疗保健和医院
适用功能
- 产品研发
- 质量保证
用例
- 预测性维护
- 远程控制
服务
- 系统集成
- 软件设计与工程服务
关于客户
WiTricity is a Watertown, MA-based company that develops wireless charging technology based on magnetic resonance. The technology was invented at the Massachusetts Institute of Technology (MIT) by Professor Marin Soljacic and a team of researchers. WiTricity's technology has the ability to charge multiple devices at once, over distances, and through materials like wood, plastic, granite, and glass. The company has licensed its technology to major companies such as Toyota, Intel, and Thoratec for use in hybrid-electric vehicles, smartphones, wearable electronics, and heart pumps. WiTricity is also a board member of the Alliance for Wireless Power (A4WP), an organization dedicated to building a global wireless ecosystem and creating standards for wireless charging.
挑战
Other options for wireless energy transfer require precise device positioning on a pad or holder, very close proximity to the charging source, and the source can only charge a single device with a single coil. WiTricity engineers aimed to overcome these limitations by leveraging magnetic resonance to enable more flexible and efficient wireless power transfer. They needed to design a system that could charge multiple devices simultaneously, over distances, and through various materials, while maintaining high efficiency and low power losses. Additionally, they faced the challenge of making the technology scalable for a wide range of devices, from smartphones to electric vehicles, and ensuring that the system met safety regulations for electromagnetic fields.
解决方案
WiTricity's engineers developed a system called 'highly resonant wireless power transfer,' which relies on oscillating time-varying magnetic fields generated by alternating current passing through a coil that functions as a power source. A power amplifier connected to this source coil controls the power levels and operating frequency, driving the magnetic field levels. A capture device, which acts as a receiver, contains another coil tuned to the same frequency as the source. This setup allows the receiving coil to capture maximum power through the magnetic field with very low losses, enabling power transmission without the source and capture device needing to be perfectly aligned or in close proximity. To extend the wireless range, resonant repeaters containing another circuit and coil can be placed between the source and receiver, allowing power to 'hop' over greater distances. The system was designed and optimized using COMSOL Multiphysics software, which allowed the engineers to simulate and validate different coil configurations, analyze electromagnetic and thermal behavior, and ensure compliance with safety regulations.
运营影响
数量效益
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