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公开(公告)号：US10003279B2
公开(公告)日：2018-06-19
申请号：US14687979
申请日：2015-04-16
发明人： Bo Qu , Yingqi Zhang , Jie Shen , Kunlun Chen , Ying Zhang
CPC分类号： H02M7/487 , H02M2001/327
摘要： A method used to control the operation of a converting device such that it can provide multi-level output voltage for loads. This method comprises at least the steps of: determine whether the load which the converter is providing electricity for is operating under the first condition or the second condition; generate the first pulse signal after determining that this load is operating under the first condition, select at least one of at least three different current paths, such that when the converter is selecting any of the current paths, it can provide output voltage at the same level; as well as generate the second pulse signal after determining that this load is operating under the second condition, such that the converter can perform the regular energy conversion operations.
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公开(公告)号：US20190207598A1
公开(公告)日：2019-07-04
申请号：US16223514
申请日：2018-12-18
发明人： Hao Yu , Fan Zhang , Zhihui Yuan , Jiao Liu , Stefan Schroeder , Yingqi Zhang
IPC分类号： H03K17/0812
CPC分类号： H03K17/0822 , H03K17/0828
摘要： A protection circuit for a controllable switch comprising a control terminal, a first terminal, and a second terminal having a lower electric potential than the first terminal, the protection device comprising: an active clamping module, coupled between the first terminal and the control terminal of the controllable switch, configured to clamp a first voltage across the first terminal and the second terminal; and a damping module, coupled to an output of the active clamping module and configured to damp oscillations of a second voltage across the control terminal and the second terminal. Embodiments of the present disclosure also relate to a protection method for a controllable switch.
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公开(公告)号：US09692293B2
公开(公告)日：2017-06-27
申请号：US14323396
申请日：2014-07-03
发明人： Tao Wu , Ying Zhang , Laigui Qin , Yingqi Zhang , Fan Zhang , Xin Hao
CPC分类号： H02M1/32 , H02H7/1203 , H02M2001/325 , H03K17/107
摘要： A circuit includes a switching module, a control module, and a driving module. The driving module is electrically coupled between the control module and the switching module for generating a driving signal. The driving module includes a normal driving unit and a fault protection unit. The normal driving unit is for turning on and off the switching module according to a first command signal from the control module. The fault protection unit is for lowering the driving signal from a driving value to a protection value according to a second command signal from the control module during a fault protection period after the control module receives a fault signal.
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公开(公告)号：US20140177120A1
公开(公告)日：2014-06-26
申请号：US14135613
申请日：2013-12-20
发明人： Yingqi Zhang , Tao WU , Fan Zhang , Kunlun Chen
IPC分类号： H02H9/02
摘要： A protection system includes a control module, a switch, and an inductive device. The control module is used to provide control signals and switching signals based at least in part on a detected signal measured by a detecting device. The control signals include a first control signal corresponding to a normal mode and a second control signal corresponding to a fault mode. The switch is switched on and off according to the switching signals. The inductive device is coupled with the switch. The inductive device is controlled to be operated with a first inductance in response to the first control signal provided from the control module and a second inductance in response to the second control signal provided from the control module.
摘要翻译： 保护系统包括控制模块，开关和感应装置。 控制模块至少部分地基于由检测装置测量的检测信号来提供控制信号和切换信号。 控制信号包括对应于正常模式的第一控制信号和对应于故障模式的第二控制信号。 开关根据开关信号接通和断开。 电感器件与开关耦合。 响应于从控制模块提供的第一控制信号，感应装置被控制为以第一电感操作，响应于从控制模块提供的第二控制信号，控制第二电感。
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5.发明授权公开(公告)号：US10476373B2
公开(公告)日：2019-11-12
申请号：US15772953
申请日：2016-10-25
发明人： Zhihui Yuan , Richard S. Zhang , Stefan Schroeder , Yingqi Zhang , Jie Shen , Fan Zhang
摘要： A method for controlling a plurality of series connected switch modules each including at least two parallel connected electronic switches, the method includes the step of, in response to failure of any electronic switch of one or more switch modules, turning on any non-faulty electronic switch of one or more faulty switch modules when the electronic switches of other non-faculty switch modules are controlled to be turned on.
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公开(公告)号：US10389230B2
公开(公告)日：2019-08-20
申请号：US15903710
申请日：2018-02-23
发明人： Saijun Mao , Stefan Schroeder , Jingkui Shi , He Xu , Marius Michael Mechlinski , Bo Qu , Zhihui Yuan , Yingqi Zhang , Jie Shen
IPC分类号： H02M1/34 , H03K17/0814 , H03K17/10 , H02M3/158
摘要： The present disclosure relates to a snubber circuit which comprises a static snubber unit, connected in parallel with the switch, for balancing a static voltage sharing across a switch when the switch is in a state of turn-on or turn-off; and a dynamic snubber unit for balance a dynamic voltage sharing across the switch when the switch is in a process of turn-on or turn-off, comprising a dynamic voltage sharing capacitor connected in parallel with the switch and having a relationship between a capacitance and a voltage of the dynamic voltage sharing capacitor; and a controller for controlling the capacitance of the dynamic voltage sharing capacitor to be in a predetermined working area of capacitance rising while the voltage across the switch is increasing. The present disclosure also relates to a power semiconductor device.
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公开(公告)号：US20180287487A1
公开(公告)日：2018-10-04
申请号：US15903710
申请日：2018-02-23
发明人： Saijun Mao , Stefan Schroeder , Jingkui Shi , He Xu , Marius Michael Mechlinski , Bo Qu , Zhihui Yuan , Yingqi Zhang , Jie Shen
CPC分类号： H02M1/34 , H02M3/158 , H02M2001/344 , H02M2001/348 , H03K17/08142 , H03K17/102
摘要： The present disclosure relates to a snubber circuit which comprises a static snubber unit, connected in parallel with the switch, for balancing a static voltage sharing across a switch when the switch is in a state of turn-on or turn-off; and a dynamic snubber unit for balance a dynamic voltage sharing across the switch when the switch is in a process of turn-on or turn-off, comprising a dynamic voltage sharing capacitor connected in parallel with the switch and having a relationship between a capacitance and a voltage of the dynamic voltage sharing capacitor; and a controller for controlling the capacitance of the dynamic voltage sharing capacitor to be in a predetermined working area of capacitance rising while the voltage across the switch is increasing. The present disclosure also relates to a power semiconductor device.
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公开(公告)号：US09225162B2
公开(公告)日：2015-12-29
申请号：US14135613
申请日：2013-12-20
发明人： Yingqi Zhang , Tao Wu , Fan Zhang , Kunlun Chen
摘要： A protection system includes a control module, a switch, and an inductive device. The control module is used to provide control signals and switching signals based at least in part on a detected signal measured by a detecting device. The control signals include a first control signal corresponding to a normal mode and a second control signal corresponding to a fault mode. The switch is switched on and off according to the switching signals. The inductive device is coupled with the switch. The inductive device is controlled to be operated with a first inductance in response to the first control signal provided from the control module and a second inductance in response to the second control signal provided from the control module.
摘要翻译： 保护系统包括控制模块，开关和电感装置。 控制模块至少部分地基于由检测装置测量的检测信号来提供控制信号和切换信号。 控制信号包括对应于正常模式的第一控制信号和对应于故障模式的第二控制信号。 开关根据开关信号接通和断开。 电感器件与开关耦合。 响应于从控制模块提供的第一控制信号，感应装置被控制为以第一电感操作，响应于从控制模块提供的第二控制信号，控制第二电感。
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