专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2010204804A Electromagnetic field intensity calculation method 审中-公开
标题翻译：电磁场强度计算方法
公开(公告)号：JP2010204804A
公开(公告)日：2010-09-16
申请号：JP2009047844
申请日：2009-03-02
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： AKASHI NORIHIKO , SUGAWARA KENGO , TAMURA SHIZUSATO
IPC分类号： G06F17/50 , G01R29/08
摘要： PROBLEM TO BE SOLVED: To solve the problem that the accuracy of calculating electromagnetic field intensity is deteriorated due to polygonal cylinder structure approximation of a shield layer as a curved surface when calculating the intensity of an electromagnetic field formed by a multi-core strand shield cable by moment simulation.
SOLUTION: A multi-core strand shield cable is approximated as a single core shield cable having: a single core cable formed of a plurality of line elements; a shield layer having a cylinder structure whose cross-sectional shape orthogonal to a cable longitudinal direction is polygonal, and having planes corresponding to each side of the polygonal, which is divided into a plurality of plane elements; and an insulator filled between the single core cable and the shield layer. The shapes and physical values of the elements configuring the single core shield cable model are set and modeled so that the transmission characteristics of the single core shield cable model can satisfy the common mode transmission characteristics of the multi-core strand shield cable.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题为了解决当计算由多核形成的电磁场的强度时，计算电磁场强度的精度由于作为弯曲表面的屏蔽层的多边形圆筒结构近似而劣化的问题绞线屏蔽电缆通过力矩模拟。解决方案：多芯绞线屏蔽电缆近似为单芯屏蔽电缆，其具有：由多个线路元件形成的单芯线缆; 屏蔽层，其具有与电缆纵向方向正交的横截面形状的圆筒结构，并且具有与多边形的每一侧对应的平面，所述平面分为多个平面元件; 以及填充在单芯电缆和屏蔽层之间的绝缘体。构成单芯屏蔽电缆模型的元件的形状和物理值被设置和建模，使得单芯屏蔽电缆模型的传输特性可以满足多芯绞线屏蔽电缆的共模传输特性。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2006296007A Drive circuit for power converter 有权
标题翻译：电源转换器驱动电路
公开(公告)号：JP2006296007A
公开(公告)日：2006-10-26
申请号：JP2005109583
申请日：2005-04-06
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TAMURA SHIZUSATO , NISHIHIRO AKINORI , IMANAKA AKIRA , OGAMI MASAKATSU
IPC分类号： H02M1/08
摘要： PROBLEM TO BE SOLVED: To obtain a drive circuit for a power converter capable of transmitting a plurality of signals for controlling a gate without increasing the number of components nor cost.
SOLUTION: The drive circuit for a power converter is constituted of a driver section 4 which inputs a command created by superimposing a plurality of control commands output from a control unit on one command and outputs a signal for driving a voltage drive type switching element, a separation circuit 5 separating the signals output from the driver section into a plurality of control signals, a first gate resistor 6a, a second gate resistor 6b having one end connected in series to the first gate resistor 6a and the other end connected to the gate terminal of the voltage drive type switching element, and a gate resistor changing switch 7 connected in parallel to the first gate resistor 6a, wherein the gate resistor changing switch 7 is operated based on the control signal output from the separation circuit 5.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：获得能够发送用于控制门的多个信号的功率转换器的驱动电路，而不增加部件的数量并且不增加成本。解决方案：功率转换器的驱动电路由驱动器部分4构成，驱动器部分4输入通过将从控制单元输出的多个控制命令叠加在一个命令上而产生的命令，并输出用于驱动电压驱动型开关元件，将从驱动器部分输出的信号分离成多个控制信号的分离电路5，第一栅极电阻器6a，第一栅极电阻器6b，其一端串联连接到第一栅极电阻器6a，另一端连接到电压驱动型开关元件的栅极端子和与第一栅极电阻6a并联连接的栅极电阻变化开关7，其中栅极电阻变化开关7基于从分离电路5输出的控制信号而被操作。 P>版权所有（C）2007，JPO＆INPIT

3. 发明专利

JPH0866024A CONTROL CIRCUIT FOR DC/DC CONVERTER 失效
公开(公告)号：JPH0866024A
公开(公告)日：1996-03-08
申请号：JP19423894
申请日：1994-08-18
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAMURA SHIZUSATO , ADACHI TOSHIHARU , KAITANI TOSHIYUKI
IPC分类号： H02M3/28
摘要： PURPOSE: To reduce the proportional gain sufficiently in PI control by controlling the input to a switching element drive circuit depending on the difference of output between a second secondary winding and an error amplifier circuit in the proportional integration control so that fluctuation in the DC output voltage has no effect on the input to the switching element. CONSTITUTION: In the proportional integration control, input to the drive circuit 3 for a switching element 2 is controlled depending on the difference between the output from an error amplifier circuit, being fed with an input depending on the output from the first secondary winding of an output transformer, and the output from the second secondary winding of the output transformer 1. Since a mechanism for producing a drive signal based on the differential voltage V between the DC output voltage P5 from a winding 20 dedicated for constant voltage and the output voltage from the error amplifier circuit is provided, the control circuit can decrease the proportional gain below 0 dB while performing PI control and means for imparting margin in the phase can be eliminated along with the adverse effect thereof.

4. 发明专利

JPH09238481A POWER CONVERTING EQUIPMENT 失效
公开(公告)号：JPH09238481A
公开(公告)日：1997-09-09
申请号：JP4596496
申请日：1996-03-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAMURA SHIZUSATO , NISHIHIRO AKINORI , OGAMI MASAKATSU
IPC分类号： H02M7/48 , H02M7/5387
摘要： PROBLEM TO BE SOLVED: To obtain a stable output voltage free from distortion when phase shift is generated between an input voltage and an output voltage, in a power converting equipment. SOLUTION: This equipment is provided with a main circuit, an AC power supply 9 and an AC output terminal. The main circuit is provided with the following, which are connected in parallel to each other; a converter circuit wherein two switching circuits are connected in series which are constituted by connecting switching elements 1s-6s and diodes 1d-6d in inverse parallel, a changeover circuit wherein the two switching circuits are connected in series, an inverter circuit wherein the two switching circuits are connected in series, and a capacitor 7. A reference command based on a reference signal from a reference signal generating circuit is subjected to pulse width modulation, and used as the timing signal to the changeover circuit.

5. 发明专利

JPH11346472A NOISE FILTER 失效
公开(公告)号：JPH11346472A
公开(公告)日：1999-12-14
申请号：JP15242498
申请日：1998-06-02
申请人： MITSUBISHI ELECTRIC CORP
发明人： TERADA HIROSHI , TAMURA SHIZUSATO
IPC分类号： H02M1/12 , H03H7/09
摘要： PROBLEM TO BE SOLVED: To improve the attenuation characteristic of a filter by conversely using the floating electrostatic capacity caused by a winding of a common mode choke coil as a line bypass capacitor. SOLUTION: In a noise filter which is inserted in the AC power line of an electrical equipment, such as an inverter device or in the DC line after the input current is smoothed and which is constituted of a plurality of choke coils L1, L2, a capacitor and the other elements, a conductor B which generates floating electrostatic capacitance between the choke coils is located between at least one pair of the choke coils, and the conductor B is connected to the ground potential.

6. 发明专利

JPH1084679A POWER CONVERTER, CONTROL METHOD, AND UNINTERRUPTIBLE POWER EQUIPMENT 失效
公开(公告)号：JPH1084679A
公开(公告)日：1998-03-31
申请号：JP23932996
申请日：1996-09-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAMURA SHIZUSATO , NISHIHIRO AKINORI , OGAMI MASAKATSU , MURAKAMI HARUJI
IPC分类号： H02M7/219 , H02J9/06 , H02M5/458 , H02M7/12 , H02M7/48 , H02M7/5387
摘要： PROBLEM TO BE SOLVED: To provide a power converter and its control method, in which the main circuit and a control circuit are sintplified, by using the main circuit partly in common to a converter unit and an inverter unit. SOLUTION: A power converter includes a converter unit 120 with two pairs of upper and lower arm switches, an inverter unit 130, and a common unit 110 with a pair of upper and lower arm switches. A common phase point, in which one phase (R) of AC input is commonly connected with one phase (U) of AC output, is connected to a middle point of the upper and lower arm switches. The other phases (S) and (T) of three-phase AC input are each connected to a middle point of two pairs of upper and lower arm switches in the converter unit. The phases (V) and (W) of three-phase AC output, are connected to two pairs of upper and lower arm switches of the inverter unit. Then, the AC input is converted to DC through the common uxnait and the converter unit, while the DC output is generated through the common unit and the inverter unit.

7. 发明专利

JPH08205548A DEVICE AND METHOD FOR POWER CONVERSION 失效
公开(公告)号：JPH08205548A
公开(公告)日：1996-08-09
申请号：JP1274495
申请日：1995-01-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAMURA SHIZUSATO , OGAMI MASAKATSU , NISHIHIRO AKINORI , YAMAMOTO MANABU
IPC分类号： H02M7/48 , H02M7/537
摘要： PURPOSE: To prevent an error of a sampled current value properly by correcting the reduction of the pulse width of a pulse width modulated signal which corresponds to the short-circuit preventing time of a switching device, symmetrically with respect to a current sampling point concerning the pulse width modulated signal. CONSTITUTION: The inverted signal 30 of a second pulse width modulated signal 29 for driving a switching device 3a has a short-circuit prevention time in a Td generating part 23 by a command of a switching device 3b, and becomes a third pulse width modulated signal 32 for driving the switching device 3b. At this time, the switching device 3b can be driven by the inverted signal of a first pulse width modulated signal 27 of a rise time Td and a fall time Td. As a result of this, the peaks of the ripple of current 25 coincide with the rising part and the falling part of the first pulse width modulated signal 27. Namely, the peaks of a carrier signal 6 being current sampling points coincide with the centers of the inclinations of the current ripple, so it becomes possible to sample the current without errors.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式