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公开(公告)号：US09831790B2
公开(公告)日：2017-11-28
申请号：US14857323
申请日：2015-09-17
发明人： Takao Mizushima , Masahiro Iizuka , Yutaka Naito , Kinshiro Takadate , Kazuki Iwaya , Eiichi Takahashi
CPC分类号： H02M3/3376 , H02M2001/0032 , H02M2001/0058 , Y02B70/1491 , Y02B70/16
摘要： A DC-to-DC converter includes a voltage converter having: a capacitance; at least one inductor configured to store energy and exchange stored energy with the capacitance; and a switching element configured to switch on and off a current flowing through the inductor and change direction of the current at each switching. The inductor includes a variable inductor whose inductance decreases with increase in the current.
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公开(公告)号：US10116221B2
公开(公告)日：2018-10-30
申请号：US15074023
申请日：2016-03-18
申请人： TDK Corporation
发明人： Kazuki Iwaya , Toshimasa Miyazaki , Kazu Shoji
摘要： A series compensating electric power transmission system has an insulated type DC-DC converter that operates in the first through fourth quadrants, first and second DC voltage sources, and first and second power converters. In the converter, a first I/O positive terminal is connected to a first voltage source positive terminal. A first I/O negative terminal is connected to a first voltage source negative terminal. One of second I/O positive and negative terminals is connected to the first voltage source positive terminal. The other of the second I/O positive and negative terminals is connected to a second voltage source positive terminal. The first power converter converts power between the first I/O positive and negative terminals and first AC I/O terminals. The second power converter converts power between the second I/O positive and negative terminals and second AC I/O terminals. The second power converter is configured with a plurality of bidirectional switches.
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公开(公告)号：US11532988B2
公开(公告)日：2022-12-20
申请号：US17326157
申请日：2021-05-20
申请人： TDK CORPORATION
发明人： Tetsuya Sakai , Taichi Iura , Hiroshige Yanagi , Kazuki Iwaya
IPC分类号： H02M3/335
摘要： A DAB converter that is capable of inhibiting a decrease in the transmission efficiency of electric power due to an individual difference of the inductance. A DAB converter including: a transformer having a primary-side winding and a secondary-side winding; a first and second full bridge circuit; a first and second capacitor; and a control unit, in which, the primary and secondary side winding is connected between a midpoint and a midpoint of the first full bridge circuit, the first capacitor is connected between two input/output terminals included in the first full bridge circuit, the second capacitor is connected between two input/output terminals included in the second full bridge circuit, and the control unit configured to adjust a phase difference between the switching of the first and second full bridge circuit based on an estimated value of an inductance of the DAB converter.
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公开(公告)号：US10396675B2
公开(公告)日：2019-08-27
申请号：US15666951
申请日：2017-08-02
申请人： TDK Corporation
摘要： A switching power supply apparatus is provided which reduces the time of application of an input voltage to a choke to suppress a peak current flowing through switch elements when a primary or secondary voltage is 0 V (or a voltage near 0 V). A DAB converter or switching power supply apparatus performs phase control to change at least either a first conduction width or a second conduction width of pairs of diagonally-arranged switch elements, constituting a primary full bridge circuit. The first conduction width is a time width in which a pulse for driving the first switch element and a pulse for driving the fourth switch element overlap temporally. The second conduction width is a time width in which a pulse for driving the second switch element and a pulse for driving the third switch element overlap temporally.
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公开(公告)号：US10536086B2
公开(公告)日：2020-01-14
申请号：US15846324
申请日：2017-12-19
申请人： TDK CORPORATION
摘要： A converter apparatus includes: a first transformer with two windings; a first full-bridge circuit with four switches, DC input/output units connected to a first DC power supply, and AC input/output units connected via an inductor to one winding of the first transformer; a second full-bridge circuit with four switches, DC input/output units connected to a second DC power supply, and AC input/output units connected via an inductor to another winding of the first transformer; a second transformer with two windings, one being connected via an inductor to the AC input/output units of the first circuit; a third full-bridge circuit with four switches, DC input/output units connected to a third DC power supply, and AC input/output units connected via an inductor to another winding of the second transformer; and a control unit for controlling the switches to supply power between the first to third DC power supplies.
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公开(公告)号：US09973188B2
公开(公告)日：2018-05-15
申请号：US15265914
申请日：2016-09-15
申请人： TDK Corporation
发明人： Kazuki Iwaya
IPC分类号： H03K17/04 , H03K17/16 , H03K17/567 , H03K19/0175 , H03K17/06
CPC分类号： H03K17/567 , H03K17/063 , H03K17/162 , H03K19/017509 , H03K2017/066
摘要： There are provided a switch driving device and a switch driving method capable of preventing a self-turn-on phenomenon. The switch driving device includes: a first signal output unit configured to output a pulsed first driving signal from a first output terminal thereof; a second signal output unit configured to output a pulsed second driving signal to a control terminal of a switching element from a second output terminal thereof; and a negative power supply generating unit configured to generate a negative voltage relative to a ground voltage and bias a low level of the second driving signal toward a negative side by the negative voltage. The negative power supply generating unit includes: a first capacitor configured to store charge by the first driving signal; and a second capacitor configured to generate the negative voltage across terminals thereof by the transfer of the charge from the first capacitor.
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公开(公告)号：US20160079866A1
公开(公告)日：2016-03-17
申请号：US14857323
申请日：2015-09-17
发明人： Takao Mizushima , Masahiro lizuka , Yutaka Naito , Kinshiro Takadate , Kazuki Iwaya , Eiichi Takahashi
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , H02M2001/0032 , H02M2001/0058 , Y02B70/1491 , Y02B70/16
摘要： A DC-to-DC converter includes a voltage converter having: a capacitance; at least one inductor configured to store energy and exchange stored energy with the capacitance; and a switching element configured to switch on and off a current flowing through the inductor and change direction of the current at each switching. The inductor includes a variable inductor whose inductance decreases with increase in the current.
摘要翻译： DC-DC转换器包括具有：电容的电压转换器; 至少一个电感器被配置为存储能量并且将存储的能量与所述电容交换; 以及开关元件，其被配置为接通和关断流过所述电感器的电流，并且在每次切换时改变所述电流的方向。 电感器包括一个可变电感器，其电感随着电流的增加而减小。
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