公开(公告)号：US20140320086A1

公开(公告)日：2014-10-30

申请号：US13871748

申请日：2013-04-26

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： DAVID W. WALLIS

IPC: H02M3/335 ,  H02J7/04 ,  H02J7/00

CPC classification number: H02M3/33507 ,  H02J7/0044 ,  H02J7/04 ,  H02M1/14 ,  H02M1/44 ,  H02M2001/0029

Abstract: A power converter having reduced switching transients includes a conversion inductance, a pulse width modulation (PWM) controller, a conversion inductance, and a switch transistor. A low pass filter is connected between the PWM controller and the switch transistor to filter a PWM signal produced by the PWM controller and produce a filtered PWM signal. The switching transistor switches current through the conversion inductance responsive to the filtered PWM signal. The low pass filter filters out harmonic content of the PWM signal that is above the fundamental frequency in a way that maintains most of the harmonic content of the PWM signal to substantially eliminate higher harmonic elements which are conventionally responsible for transients across the conversion inductance.

Abstract translation: 具有减小的开关瞬变的功率转换器包括转换电感，脉宽调制（PWM）控制器，转换电感和开关晶体管。 PWM控制器和开关晶体管之间连接有一个低通滤波器，以对由PWM控制器产生的PWM信号进行滤波，并产生滤波后的PWM信号。 开关晶体管响应于滤波的PWM信号而切换电流通过转换电感。 低通滤波器以维持PWM信号的大部分谐波含量的方式滤除高于基频的PWM信号的谐波含量，从而基本上消除了传统上负责转换电感瞬态的高次谐波元件。

公开(公告)号：US20170063129A1

公开(公告)日：2017-03-02

申请号：US14839102

申请日：2015-08-28

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： DAVID W. WALLIS ,  JOHN E. HERRMANN ,  MARK C. TARABOULOS

IPC: H02J7/02 ,  H02J7/00

CPC classification number: H02J7/025 ,  H02J7/0042 ,  H02J7/0052 ,  H02J50/15 ,  H02J2007/0059

Abstract: A charging apparatus (102), system (100) and method (500) are provided for charging and/or powering a wearable electronic device, such as electronic eyeglasses. The charging apparatus comprises an acoustic horn, a piezoelectric transducer, and charger circuitry for converting ultrasonic waves received at the horn into a charging signal. The charging signal is used for charging and/or powering the wearable electronic device while the device is being worn.

Abstract translation: 提供充电装置（102），系统（100）和方法（500），用于对诸如电子眼镜的可穿戴电子装置进行充电和/或供电。 充电装置包括声喇叭，压电换能器和用于将在喇叭处接收的超声波转换为充电信号的充电器电路。 充电信号用于在穿戴设备时对可穿戴电子设备进行充电和/或供电。

公开(公告)号：US20160064942A1

公开(公告)日：2016-03-03

申请号：US14471947

申请日：2014-08-28

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： EDWARD W. BRUMLEY, JR. ,  JOHN E. HERRMANN ,  DAVID W. WALLIS

IPC: H02J5/00

CPC classification number: H02J5/005 ,  H02J50/20 ,  H02J50/80 ,  H04B5/0037 ,  H04B5/0093

Abstract: Disclosed herein are methods and systems for providing a ballast load for a magnetic resonance power source. One embodiment takes the form of a magnetic resonance power source that includes a source coil, a load-detection module, a tunable ballast coil circuit, and a controller programmed to carry out a set of functions. The set of functions includes obtaining, via the load-detection module, an estimated load on the source coil. The set of functions also includes decreasing the power received by the tunable ballast coil circuit from the source coil when the estimated load on the source coil is greater than a desired load on the source coil. The set of functions also includes increasing the power received by the tunable ballast coil circuit from the source coil when the estimated load on the source coil is less than the desired load on the source coil.

Abstract translation: 本文公开了用于为磁共振电源提供镇流器负载的方法和系统。 一个实施例采用磁共振电源的形式，其包括源线圈，负载检测模块，可调谐镇流器线圈电路和被编程为执行一组功能的控制器。 该功能集包括通过负载检测模块获得源极线圈上的估计负载。 该功能集还包括当源极线圈上的估计负载大于源线圈上的期望负载时，降低可调谐镇流器线圈电路从源线圈接收的功率。 该功能集还包括当源极线圈上的估计负载小于源线圈上的期望负载时，增加可调谐镇流器线圈电路从源线圈接收的功率。