PARAMETER ESTIMATION OF LOOSELY COUPLED TRANSFORMER

• Main Authors: MOHAMED ELSHAER, SARA DADRAS, CHRISTOPHER W. BELL, HADI MALEK
• Format: Patent
• Language: Chinese; English
• Published: 20.06.2017
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; INDUCTANCES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MAGNETS; PERFORMING OPERATIONS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSFORMERS; TRANSPORTING; VEHICLES IN GENERAL

The invention relates to parameter estimation of a loosely coupled transformer. A parameter estimation system includes a first coil configured to be loosely inductively coupled to a second coil. A controller is programmed to output parameters of the first coil and second coil. The controller is programmed to estimate the parameters based on voltage and current measurement from only the first or the second coil. The voltage and current measurements may be used in a Kalman filter. In some configurations, the controller is further programmed to command a short circuit between terminals of the second coil and apply a test voltage to the first coil. The first coil may be part of a vehicle charging station and the second coil may be part of a vehicle. The parameters may be utilized to control charging of the vehicle. 本公开涉及松耦合变压器的参数估计。种参数估计系统包括被配置为被松散地感应耦合到第二线圈的第线圈。控制器被配置为输出第线圈和第二线圈的参数。所述控制器被配置为：基于仅来自第线圈或第二线圈的电压测量值和电流测量值来估计所述参数。所述电压测量值和电流测量值可被用在卡尔曼滤波器中。在些配置中，所述控制器还被配置为命令第二线圈的端子之间的短路并且将测试电压施加到第线圈。第线圈可以是车辆充电站的部分，第二线圈可