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1. 发明申请

US20170264248A1 SWITCHING AMPLIFIER WITH ZERO VOLTAGE SWITCHING AND BALANCED THERMAL CONTROL ALGORITHM 审中-公开
公开(公告)号：US20170264248A1
公开(公告)日：2017-09-14
申请号：US15510392
申请日：2015-09-10
申请人： General Electric Company
发明人： Ying MEI , Pengcheng ZHU , Juan Antonio SABATE , Song CHI , Ruxi WANG , Jianguo XIAO
IPC分类号： H03F1/26 , H03F1/30 , G01R33/385 , H03F3/217
CPC分类号： H03F1/26 , G01R33/3852 , H03F1/303 , H03F1/523 , H03F3/2171 , H03F3/2173 , H03F2200/351 , H03K17/133
摘要： A switching amplifier includes a plurality of cascade elements, each bridge circuit includes an inductive load coupled between a first leg terminal of one of the at least two leg circuits and a second leg terminal of another one of the at least two leg circuits. A first leg voltage of the first leg terminal have a phase shift relative to a second leg voltage of the second leg terminal, the phase shift is used for causing the inductive load to store electric energy and generating a minimum circulating current—I min or I min sufficient to effect conducting of a corresponding diode; each of the switches is configured to be turned on if the corresponding diode conducts current to effect zero voltage switching of the corresponding switch. The minimum circulating current—I min or I min is equal to a constant value.

2. 发明申请

US20130099590A1 SYSTEM AND METHOD FOR POWER SUPPLY CONTROL 有权
标题翻译：用于供电控制的系统和方法
公开(公告)号：US20130099590A1
公开(公告)日：2013-04-25
申请号：US13659284
申请日：2012-10-24
申请人： General Electric Company
发明人： Tao Ma , Xi LU , Yimeng SHI , Pengcheng ZHU , Garron Koch MORRIS , Juan Antonio SABATE , Jeffrey Neal SLOTNICK , Wesley Michael SKEFFINGTON , Margaret Ann WIZA
IPC分类号： H02M3/335 , H02J17/00
CPC分类号： H02M3/3388 , H02M2001/0003 , Y02B70/1433
摘要： A resonant power supply is provided. The resonant power supply comprises a series resonant converter configured to convert an input DC voltage to an output DC voltage to generate an output DC voltage. The series resonant converter includes a switching stage, a resonant inductor, a resonant capacitor, and an isolation transformer. The resonant power supply further comprises a converter controller configured to obtain an actual trajectory radius signal based on a resonant inductor current, a resonant capacitor voltage, and a voltage in association with the isolation transformer. The converter controller is further configured to generate a trajectory radius command signal based on a DC voltage command signal and a DC voltage feedback signal, and to generate control signals to be applied to the switching stage based on the actual trajectory radius signal and the trajectory radius command signal.
摘要翻译：提供谐振电源。谐振电源包括串联谐振转换器，其被配置为将输入DC电压转换为输出DC电压以产生输出DC电压。串联谐振变换器包括开关级，谐振电感，谐振电容和隔离变压器。谐振电源还包括转换器控制器，其被配置为基于谐振电感器电流，谐振电容器电压和与隔离变压器相关联的电压获得实际的轨迹半径信号。转换器控制器还被配置为基于直流电压指令信号和直流电压反馈信号产生轨迹半径指令信号，并且基于实际轨迹半径信号和轨迹半径产生要施加到切换级的控制信号命令信号。

3. 发明申请

US20130099788A1 SYSTEM AND METHOD FOR GRADIENT AMPLIFIER CONTROL 有权
标题翻译：梯度放大器控制的系统和方法
公开(公告)号：US20130099788A1
公开(公告)日：2013-04-25
申请号：US13659337
申请日：2012-10-24
申请人： GENERAL ELECTRIC COMPANY
发明人： Fei XU , Tao MA , Xi LU , Xinhui WU , Yimeng SHI , Pengcheng ZHU , Garron Koch MORRIS , Juan Antonio SABATE , Jeffrey Neal SLOTNICK
IPC分类号： G01R1/30 , H02M7/44 , G01R33/341
CPC分类号： G01R33/3852 , H02M3/3376 , Y02B70/1433
摘要： A gradient amplifier for driving a gradient coil is disclosed. The gradient amplifier includes a direct current (DC) bus for receiving DC voltage generated from a series resonant converter, an inverter coupled to the DC bus configured to receive the DC voltage at the DC bus and convert the DC voltage to generate an output voltage to be applied to the gradient coil, and an inverter controller coupled to the inverter. The inverter controller is configured to generate control signals to control operation of the inverter based at least on a DC voltage feedback signal measured at the DC bus, an output voltage feedback signal measured at the output of the inverter, and a reference output voltage signal indicative of a desired voltage to be achieved at the output of the inverter.
摘要翻译：公开了一种用于驱动梯度线圈的梯度放大器。梯度放大器包括用于接收从串联谐振转换器产生的直流电压的直流（DC）总线，耦合到DC总线的反相器，其被配置为在DC总线处接收DC电压并转换DC电压以产生输出电压施加到梯度线圈，以及连接到逆变器的逆变器控制器。逆变器控制器被配置为产生控制信号，以至少基于在DC总线处测量的DC电压反馈信号，在逆变器的输出处测量的输出电压反馈信号和指示的参考输出电压信号来控制逆变器的操作具有在逆变器的输出端要实现的期望电压。

4. 发明申请

US20130099787A1 SYSTEM AND METHOD FOR SERIES RESONANT CONVERTER PROTECTION 有权
标题翻译：用于系列谐波转换器保护的系统和方法
公开(公告)号：US20130099787A1
公开(公告)日：2013-04-25
申请号：US13659311
申请日：2012-10-24
申请人： GENERAL ELECTRIC COMPANY
发明人： Xi LU , Tao MA , Yimeng SHI , Pengcheng ZHU , Garron Koch MORRIS , Juan Antonio SABATE , Jeffrey Neal SLOTNICK , Wesley Michael SKEFFINGTON , Margaret Ann WIZA
IPC分类号： H02M3/335 , G01R33/341
CPC分类号： H02M3/3376 , H02M1/32 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A resonant power supply is disclosed. The resonant power supply includes a series resonant configured to convert an input DC voltage to an output DC voltage. The resonant power supply further comprises a converter controller coupled to the series resonant converter and configured to receive a DC voltage feedback signal measured at the output of the series resonant converter, or a resonant current feedback signal representing a resonant current flowing through the series resonant converter. The converter controller is further configured to generate control signals to be applied to the series resonant converter to limit the output DC voltage of the series resonant converter according to the DC voltage feedback signal and a predetermined voltage threshold signal, or to limit the resonant current of the series resonant converter according to the resonant current feedback signal and a predetermined current threshold signal.
摘要翻译：公开了一种谐振电源。谐振电源包括被配置为将输入DC电压转换为输出DC电压的串联谐振。谐振电源还包括耦合到串联谐振转换器并被配置为接收在串联谐振转换器的输出处测量的DC电压反馈信号的转换器控制器，或表示流过串联谐振转换器的谐振电流的谐振电流反馈信号。转换器控制器还被配置为产生要施加到串联谐振转换器的控制信号，以根据直流电压反馈信号和预定电压阈值信号来限制串联谐振变换器的输出直流电压，或限制串联谐振变换器的谐振电流所述串联谐振变换器根据所述谐振电流反馈信号和预定电流阈值信号。

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