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1. 发明授权

US09754717B2 Method of and apparatus for generating an adjustable reactance 有权
公开(公告)号：US09754717B2
公开(公告)日：2017-09-05
申请号：US13891917
申请日：2013-05-10
申请人： MOMENTUM DYNAMICS CORPORATION
发明人： Bruce Richard Long , Andrew William Daga , Daniel S. Hackman
IPC分类号： H01F27/42 , H01F37/00 , H01F38/00 , H01F38/14 , H02J50/12
CPC分类号： H01F38/14 , H02J50/12
摘要： A method for adjusting reactance includes an adjustable reactance generator including a comparator receiving an input sinusoidal waveform and outputting a square wave that retains the frequency and phase of the applied sinusoidal waveform. The reactance adjustment is generated using a power switching circuit that receives the square wave from the comparator as a control signal and outputs a square wave that retains the frequency and phase of the applied sinusoidal voltage waveform, an adjustable power supply that adjusts the amplitude of the square wave output by the power switching circuit, and an amplitude detector that controls the output level of the adjustable power supply. The power switching circuit output, when converted to a sinusoid, provides the effect of an adjustable reactance.

2. 发明申请

US20130300209A1 MTHOD OF AND APPARATUS FOR GENERATING AN ADJUSTABLE REACTANCE 有权
标题翻译：用于产生可调整反应的装置和装置
公开(公告)号：US20130300209A1
公开(公告)日：2013-11-14
申请号：US13891917
申请日：2013-05-10
申请人： MOMENTUM DYNAMICS CORPORATION
发明人： Bruce Richard Long , Andrew William Daga , Daniel S. Hackman
IPC分类号： H01F38/14
CPC分类号： H01F38/14 , H02J50/12
摘要： A method for adjusting reactance includes an adjustable reactance generator including a comparator receiving an input sinusoidal waveform and outputting a square wave that retains the frequency and phase of the applied sinusoidal waveform. The reactance adjustment is generated using a power switching circuit that receives the square wave from the comparator as a control signal and outputs a square wave that retains the frequency and phase of the applied sinusoidal voltage waveform, an adjustable power supply that adjusts the amplitude of the square wave output by the power switching circuit, and an amplitude detector that controls the output level of the adjustable power supply. The power switching circuit output, when converted to a sinusoid, provides the effect of an adjustable reactance.
摘要翻译：一种用于调整电抗的方法包括可调电抗发生器，其包括接收输入正弦波形的比较器，并输出保持施加的正弦波形的频率和相位的方波。使用从比较器接收方波作为控制信号的电力切换电路产生电抗调整，并输出保持所施加的正弦波电压波形的频率和相位的方波，调节电源的幅度功率开关电路的方波输出，以及控制可调电源的输出电平的振幅检测器。电源开关电路输出，当转换成正弦波时，提供可调电抗的作用。

3. 发明授权

US11585836B2 Current sensing in a wireless power transfer system 有权
公开(公告)号：US11585836B2
公开(公告)日：2023-02-21
申请号：US16825624
申请日：2020-03-20
申请人： Momentum Dynamics Corporation
发明人： John M. Wolgemuth , Benjamin H. Cohen , Daniel S. Hackman
IPC分类号： G01R15/18 , H02J50/12 , G01R1/00
摘要： A current sensing method measures a fractional current through a coil having a plurality of coil windings by using a current sensing resistor to measure a current through a subset of the plurality of coil windings and using a voltage sensor to measure a voltage drop across the current sensing resistor. The measured current and voltage values are provided to a processor to determine the fractional current and phase of the coil. For example, the fractional current and phase of the coil may be determined by calculating a total current of the coil as I=n(V/Rx), where n is the number of coil windings of the coil, V is the measured voltage, and Rx is the impedance of the current sensing resistor. The coil may be a secondary winding used in a wireless power transfer system.

4. 发明授权

US10319517B2 Method of and apparatus for generating an adjustable reactance 有权
公开(公告)号：US10319517B2
公开(公告)日：2019-06-11
申请号：US15665688
申请日：2017-08-01
申请人： MOMENTUM DYNAMICS CORPORATION
发明人： Bruce Richard Long , Andrew William Daga , Daniel S. Hackman
IPC分类号： H01F27/42 , H01F37/00 , H01F38/00 , H01F38/14 , H02J50/10 , H02J7/02 , H02J5/00 , H02J50/12
摘要： A method for adjusting reactance includes an adjustable reactance generator including a comparator receiving an input sinusoidal waveform and outputting a square wave that retains the frequency and phase of the applied sinusoidal waveform. The reactance adjustment is generated using a power switching circuit that receives the square wave from the comparator as a control signal and outputs a square wave that retains the frequency and phase of the applied sinusoidal voltage waveform, an adjustable power supply that adjusts the amplitude of the square wave output by the power switching circuit, and an amplitude detector that controls the output level of the adjustable power supply. The power switching circuit output, when converted to a sinusoid, provides the effect of an adjustable reactance.

5. 发明申请

US20210293855A1 CURRENT SENSING IN A WIRELESS POWER TRANSFER SYSTEM 有权
公开(公告)号：US20210293855A1
公开(公告)日：2021-09-23
申请号：US16825624
申请日：2020-03-20
申请人： Momentum Dynamics Corporation
发明人： John M. Wolgemuth , Benjamin H. Cohen , Daniel S. Hackman
IPC分类号： G01R15/18 , H02J50/12
摘要： A current sensing method measures a fractional current through a coil having a plurality of coil windings by using a current sensing resistor to measure a current through a subset of the plurality of coil windings and using a voltage sensor to measure a voltage drop across the current sensing resistor. The measured current and voltage values are provided to a processor to determine the fractional current and phase of the coil. For example, the fractional current and phase of the coil may be determined by calculating a total current of the coil as I=n(V/Rx), where n is the number of coil windings of the coil, V is the measured voltage, and Rx is the impedance of the current sensing resistor. The coil may be a secondary winding used in a wireless power transfer system.

6. 发明申请

US20180053598A1 Method Of And Apparatus For Generating An Adjustable Reactance 审中-公开
公开(公告)号：US20180053598A1
公开(公告)日：2018-02-22
申请号：US15665688
申请日：2017-08-01
申请人： MOMENTUM DYNAMICS CORPORATION
发明人： Bruce Richard Long , Andrew William Daga , Daniel S. Hackman
IPC分类号： H01F38/14 , H02J50/12
CPC分类号： H01F38/14 , H02J50/12
摘要： A method for adjusting reactance includes an adjustable reactance generator including a comparator receiving an input sinusoidal waveform and outputting a square wave that retains the frequency and phase of the applied sinusoidal waveform. The reactance adjustment is generated using a power switching circuit that receives the square wave from the comparator as a control signal and outputs a square wave that retains the frequency and phase of the applied sinusoidal voltage waveform, an adjustable power supply that adjusts the amplitude of the square wave output by the power switching circuit, and an amplitude detector that controls the output level of the adjustable power supply. The power switching circuit output, when converted to a sinusoid, provides the effect of an adjustable reactance.

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