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1. 发明专利

JP2014023261A Power conversion device and power conversion system 审中-公开
标题翻译：电力转换装置和电力转换系统
公开(公告)号：JP2014023261A
公开(公告)日：2014-02-03
申请号：JP2012158919
申请日：2012-07-17
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KUBOYAMA YU , IZUMI KIKUO , OKUDA TATSUYA
IPC分类号： H02M7/48 , H02M7/493
摘要： PROBLEM TO BE SOLVED: To obtain a power conversion device and a power conversion system which, in a configuration where a plurality of power conversion devices are operated in parallel to supply power to a common load, can reduce the possibility that when the load changes suddenly, power flows into the other power conversion devices and those power conversion devices are stopped by their overvoltage protective function, thus making it possible to improve the quality of power supplied to the load.SOLUTION: A power conversion device comprises: a DC voltage control circuit 211 which controls other power conversion devices 10 operated in parallel so that a voltage across their DC voltage smoothing capacitor 103 drops to or below a prescribed voltage value; an output limiting circuit 212 which limits an output current directive by output of the DC voltage control circuit 211; and a drive control unit 200 which controls the operation of an inverter 202 so as to limit its output power according to output of the output limiting circuit 212.
摘要翻译：要解决的问题：为了获得电力转换装置和电力转换系统，其在多个电力转换装置并联运行以向公共负载供电的结构中可以减少当负载突然变化时的可能性，电力流入其他电力转换装置，并且这些电力转换装置通过其过电压保护功能停止，从而可以提高提供给负载的电力的质量。解决方案：一种电力转换装置包括：直流电压控制电路 211，其控制并联运行的其他电力转换装置10，使得其直流电压平滑电容器103两端的电压下降到或低于规定的电压值; 输出限制电路212，其通过直流电压控制电路211的输出限制输出电流指令; 以及驱动控制单元200，其控制反相器202的操作，以便根据输出限制电路212的输出来限制其输出功率。

2. 发明专利

JP2013055794A Power conversion device 审中-公开
标题翻译：电源转换器件
公开(公告)号：JP2013055794A
公开(公告)日：2013-03-21
申请号：JP2011192239
申请日：2011-09-05
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： AMIMOTO TAKESHI , OKUDA TATSUYA , JIMICHI TAKUSHI
IPC分类号： H02M7/48 , H02M3/155
CPC分类号： Y02E10/56
摘要： PROBLEM TO BE SOLVED: To provide a power conversion device for a power conditioner or the like having a step-up circuit and a single phase inverter to convert DC to AC which reduces a switching loss of power devices.SOLUTION: When a step-up circuit 2 steps up a voltage of a DC power supply 1 to charge a capacitor and then a single phase inverter 4 converts it to output AC power, power devices of the step-up circuit 2 and single phase inverter 4 are PWM-controlled. Specifically, generation means 17, 18 generate two types of triangular carrier frequencies determinative of the switching frequency of each power device, and when the absolute value of an AC output current exceeds a threshold, control means 8 uses the lower triangular carrier frequency in the PWM control to reduce the frequency of switching within a range of the AC output current apart from zero crossings and reduce a loss while preventing an increase in maximum amplitude of current ripples near zero crossings of the AC output current.
摘要翻译：要解决的问题：提供一种具有升压电路的功率调节器等的电力转换装置和将DC转换为AC的单相逆变器，从而降低功率器件的开关损耗。
解决方案：当升压电路2升压直流电源1的电压以对电容器充电，然后单相逆变器4将其转换为输出AC电力时，升压电路2的功率器件和单相逆变器4是PWM控制的。具体地，生成单元17,18生成确定各功率器件的开关频率的两种三角载波频率，并且当AC输出电流的绝对值超过阈值时，控制单元8使用PWM中的下三角载波频率控制以减少在交叉输出电流的范围内的切换频率，而不是过零点，并减少损耗，同时防止交流输出电流过零点附近的电流波纹的最大振幅增加。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2011055612A Dc/dc converter 有权
标题翻译： DC / DC转换器
公开(公告)号：JP2011055612A
公开(公告)日：2011-03-17
申请号：JP2009201223
申请日：2009-09-01
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TANAKA YUYA , URAKABE TAKAHIRO , OKUDA TATSUYA , KOBAYASHI MASARU , IKEDA MATAHIKO , MAEKAWA HIROTOSHI
IPC分类号： H02M3/07
摘要： PROBLEM TO BE SOLVED: To obtain a DC/DC converter that is operated even if an intermediate capacitor is opened to fail, sends energy equivalent to that when the DC/DC converter is normal even in the case of short-circuit failure, and can step up and down voltage. SOLUTION: In the step-down operation, a change to a pattern for mutually and simultaneously turning on/off first and second switching elements S1, S2 is made when the open-circuit failure of the intermediate capacitor C1 is detected, and a change to a pattern for continuously keeping the second switching element S2 on and turning on/off the first switching element S1 is made when the short-circuit failure of the intermediate capacitor C1 is detected. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了获得即使中间电容器断开而运行的DC / DC转换器，即使在短路故障的情况下，发送与DC / DC转换器正常时相同的能量，并可升压和降压。解决方案：在降压操作中，当检测到中间电容器C1的开路故障时，进行相互同时打开/关闭第一和第二开关元件S1，S2的模式的改变，以及当检测到中间电容器C1的短路故障时，进行用于连续保持第二开关元件S2导通和接通/断开第一开关元件S1的模式的改变。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2010178447A Semiconductor circuit device 有权
标题翻译：半导体电路设备
公开(公告)号：JP2010178447A
公开(公告)日：2010-08-12
申请号：JP2009016137
申请日：2009-01-28
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TSUNODA GIICHI , KOBAYASHI MASARU , IKEDA MATAHIKO , OKUDA TATSUYA , URAKABE TAKAHIRO , MORITAKE NAOKI
IPC分类号： H02M3/07
摘要： PROBLEM TO BE SOLVED: To provide a semiconductor circuit device which adopts not a protective measure that becomes disadvantageous in the cost aspect or efficiency aspect such as raising the breakdown voltage of a semiconductor switch element itself but a protective measure against overvoltage using a clamp circuit for clamping the circuit between main circuit terminals on the occurrence of an overvoltage, and also can suppress the malfunction of the clamp circuit effectively.
SOLUTION: It includes a clamp operation control circuit 9 which disables beforehand the operation of a clamp circuit 8 at normal times, and enables the operation of the clamp circuit 8 at earlier timing than that of a drive signal that is sent out to the gate terminal G of a switch Sw3 from a gate driving circuit 7 when an abnormal condition detection signal is output from an abnormal condition detecting circuit 6.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种半导体电路装置，其不采取在成本方面或效率方面变得不利的保护措施，例如提高半导体开关元件本身的击穿电压，而是采用使用钳位电路，用于在发生过电压时钳位主电路端子之间的电路，并且还可以有效地抑制钳位电路的故障。解决方案：它包括一个钳位操作控制电路9，其在正常时间预先禁止钳位电路8的操作，并且使得钳位电路8的操作能够比发送到从异常状态检测电路6输出异常状态检测信号时，来自栅极驱动电路7的开关Sw3的栅极端子G.（C）2010，JPO＆INPIT

5. 发明专利

JP2009219249A Dc-dc power converter 有权
标题翻译： DC-DC电源转换器
公开(公告)号：JP2009219249A
公开(公告)日：2009-09-24
申请号：JP2008060401
申请日：2008-03-11
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： URAKABE TAKAHIRO , OKUDA TATSUYA , IWATA AKIHIKO , MAEKAWA HIROTOSHI , KOBAYASHI MASARU , IKEDA MATAHIKO
IPC分类号： H02M3/07 , H02M7/10
摘要： PROBLEM TO BE SOLVED: To provide a DC-DC converter can unfailingly perform conversion operation, at stepping up/down of voltage at a high conversion efficiency, and of being miniaturized. SOLUTION: A plurality of circuits A1-A4 each formed, by connecting a smoothing capacitor in parallel to a serial body of semiconductor switching elements on the high-voltage side and the low-voltage side are serially connected. Capacitors Cr and inductors Lr are arranged between a circuit A1 of the circuits and the other circuits A2-A4. A predetermined circuit is used as an inverter circuit and the other circuits are each used as a rectification circuit, and DC-DC power conversion is executed by charging/discharging of each of the capacitors Cr. In this case, a determining means 14 determines a direction in which energy flows between voltage terminal pairs on the low-voltage side and high-voltage side, and a gate signal generating means 15 individually generates an inverter gate signal for driving the switching element and a rectification gate signal, in response to the result of the determination. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供DC-DC转换器，可以在高转换效率的升压/降压和小型化的同时进行转换操作。解决方案：通过将平滑电容器并联连接到高压侧和低压侧上的半导体开关元件的串行体而形成的多个电路A1-A4串联连接。电容器Cr和电感器Lr布置在电路的电路A1和其它电路A2-A4之间。使用预定电路作为逆变器电路，其他电路各自用作整流电路，并且通过每个电容器Cr的充电/放电来执行DC-DC电力转换。在这种情况下，确定装置14确定在低压侧和高压侧之间的电压端子对之间的能量流动的方向，并且门信号发生装置15分别产生用于驱动开关元件的反相器门信号，整流门信号，响应于确定的结果。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2009219248A Dc-dc power converter 有权
标题翻译： DC-DC电源转换器
公开(公告)号：JP2009219248A
公开(公告)日：2009-09-24
申请号：JP2008060400
申请日：2008-03-11
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： URAKABE TAKAHIRO , OKUDA TATSUYA , IWATA AKIHIKO , MAEKAWA HIROTOSHI , KOBAYASHI MASARU , IKEDA MATAHIKO
IPC分类号： H02M3/07 , H02M7/10
摘要： PROBLEM TO BE SOLVED: To provide a DC-DC converter, can unfailingly perform conversion operation at stepping up/down of voltage, at a high conversion efficiency.
SOLUTION: A plurality of circuits A1-A4, each being formed by connecting a smoothing capacitor in parallel with a serial body of semiconductor switching elements on a high voltage side and a low voltage side are mutually connected, while a serial body of capacitors Cr and inductors Lr are arranged serially. Of the circuits, a predetermined circuit is used as an inverter circuit, and the other circuits are each used as a rectification circuit, DC-DC power conversion is executed by charging/discharging of the capacitor Cr. In this case, a determining means 14 decides the direction in which energy flows between voltage terminal pairs on the low-voltage side and high-voltage side, and a gate signal generating means 15 individually generates an inverter gate signal for driving the switching element and a rectifying gate signal, in response to the result of determination.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供DC-DC转换器，可以以高的转换效率，可以在升压/降压的情况下，可靠地进行转换操作。解决方案：通过将平滑电容器与高电压侧和低压侧的半导体开关元件的串联体并联连接而形成的多个电路A1-A4相互连接，而串联体电容器Cr和电感器Lr串联布置。在这些电路中，使用预定电路作为逆变器电路，其他电路均用作整流电路，通过电容器Cr的充电/放电来执行DC-DC电力转换。在这种情况下，确定装置14决定低压侧和高压侧的电压端子对之间的能量流动的方向，栅极信号生成单元15分别产生用于驱动开关元件的反相门控信号，整流门信号，响应于确定的结果。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2006288110A Power converter 有权
标题翻译：电源转换器
公开(公告)号：JP2006288110A
公开(公告)日：2006-10-19
申请号：JP2005106108
申请日：2005-04-01
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： URAKABE TAKAHIRO , OKUDA TATSUYA , KIKUNAGA TOSHIYUKI
IPC分类号： H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a power converter for reducing the number of regenerating series elements including inductors, SW elements and Di for composing the power converter, and having a compact constitution. SOLUTION: Two or more series elements include H-side SW element HS and L-side SW element LS, and are connected in parallel between high-voltage and low-voltage terminals H, L. Series elements include a snubber capacitor SC and a snubber Di SD, and are connected to the H-side SW element HS and the L-side SW element LS in parallel. In two regenerating series elements, one end of the H-side or L-side regenerating diode, the regenerating inductor and the regenerating SW element is connected to a connection between the snubber capacitor SC and the snubber diode SD of the H-side SW element HS or L-side SW element LS, the other end of them is connected to a common connection, the H-side or L-side regenerating diode, the regenerating inductor and the regenerating SW element are connected in series, a terminal of the inductor is connected to the common connection of the H-side or L-side regenerating diode, and a terminal of the SW element is connected to the high-voltage or low-voltage terminal H, L. The SW elements in two regenerating series elements carry a current when the H-side SW element HS or L-side SW element LS carries the current. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于减少包括用于组成功率转换器的电感器，SW元件和Di的再生串联元件的数量的功率转换器，并且具有紧凑的结构。
解决方案：两个或更多个串联元件包括H侧SW元件HS和L侧SW元件LS，并联在高电压和低压端子H，L之间。串联元件包括缓冲电容器SC 和缓冲器Di SD，并且并联连接到H侧SW元件HS和L侧SW元件LS。在两个再生串联元件中，H侧或L侧再生二极管的一端，再生电感器和再生SW元件连接到缓冲电容器SC和H侧SW元件的缓冲二极管SD之间的连接 HS或L侧SW元件LS，其另一端连接到公共连接，H侧或L侧再生二极管，再生电感器和再生SW元件串联连接，电感器的端子连接到H侧或L侧再生二极管的公共连接，SW元件的端子连接到高压或低压端子H，L。两个再生串联元件中的SW元件携带当H侧SW元件HS或L侧SW元件LS承载电流时的电流。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2003339152A Gate drive circuit of voltage drive type semiconductor element 有权
标题翻译：电压驱动型半导体元件的门极驱动电路
公开(公告)号：JP2003339152A
公开(公告)日：2003-11-28
申请号：JP2002147217
申请日：2002-05-22
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： OKUDA TATSUYA , URAKABE TAKAHIRO , TSUNODA GIICHI , KURAMOTO YUJI , ASAI TAKAKIMI
IPC分类号： H02M1/08 , H02M1/00 , H03K17/16 , H03K17/567
摘要： PROBLEM TO BE SOLVED: To provide a gate drive circuit for a voltage drive type semiconductor element which is low in power loss, and can suppress surge voltage at switching.
SOLUTION: When a control signal is inputted, a bipolar transistor Q3 (hereinafter, simply called a 'transistor') is turned off, and transistors Q1 and Q2 are turned on, and the gate current of a switch element M1 flows in parallel via resistors R1 and R2, and gate voltage drops suddenly, and the current of the load L1 connected to the switch element M1 decreases rapidly. The change rate of the drain current of the switch element M1 becomes small, and the surge voltage is suppressed by detecting the overvoltage generated between the drain and the source of the switch M1 due to the parasitic inductance L2 of wiring due to the rapid decrease of load L1 with a Zener diode ZD, and operating a transistor Q4 so as to make a current flow to a resistor R5, and raising the base potential of a transistor Q2 so as to switch it off, and limiting the gate current of the switch element M1 to flow only to a resistor R1.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供功率损耗低的电压驱动型半导体元件的栅极驱动电路，能够抑制切换时的浪涌电压。解决方案：当输入控制信号时，双极晶体管Q3（以下简称为“晶体管”）截止，晶体管Q1和Q2导通，开关元件M1的栅极电流流入通过电阻R1和R2并联，并且栅极电压突然下降，并且连接到开关元件M1的负载L1的电流迅速下降。开关元件M1的漏极电流的变化率变小，通过检测由于布线的寄生电感L2而导致的开关M1的漏极和源极之间产生的过电压，由于快速降低使用齐纳二极管ZD负载L1，并操作晶体管Q4以使电流流向电阻器R5，并且提高晶体管Q2的基极电位以使其截止，并限制开关元件的栅极电流 M1只流到电阻R1。版权所有（C）2004，JPO

9. 发明专利

JP2011061900A Dc/dc power converter 有权
标题翻译： DC / DC电源转换器
公开(公告)号：JP2011061900A
公开(公告)日：2011-03-24
申请号：JP2009206048
申请日：2009-09-07
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： IKEDA MATAHIKO , KOBAYASHI MASARU , MAEKAWA HIROTOSHI , URAKABE TAKAHIRO , OKUDA TATSUYA , MITSUI TAKAO , MORITAKE NAOKI
IPC分类号： H02M3/07
摘要： PROBLEM TO BE SOLVED: To provide a DC/DC power converter having a compact energy-migration capacitor, and steadily reducing a switching loss.
SOLUTION: The DC/DC power converter uses the energy-migration capacitor and an inductor, utilizes charging and discharging of the energy-migration capacitor to perform DC/DC conversion, and includes a means of detecting or calculating a ripple voltage of the energy-migration capacitor and a means of adjusting a switching frequency of a semiconductor switching element according to the detected or calculated ripple voltage.
COPYRIGHT: (C)2011,JPO&INPIT

10. 发明专利

JP2011004557A Dc/dc power conversion device 有权
标题翻译： DC / DC电源转换器件
公开(公告)号：JP2011004557A
公开(公告)日：2011-01-06
申请号：JP2009147245
申请日：2009-06-22
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： OKUDA TATSUYA , URAKABE TAKAHIRO , KOBAYASHI MASARU , IKEDA MATAHIKO , MAEKAWA HIROTOSHI
IPC分类号： H02M3/07 , H02M3/155
摘要： PROBLEM TO BE SOLVED: To provide a DC/DC power conversion device that executes stable voltage transition operation while suppressing an overcurrent.SOLUTION: The DC/DC power conversion device is configured as follows. High-voltage side switch elements and low-voltage side switch elements of first/second bridge circuits A11, A2 are ON/OFF-controlled. Consequently, a part of energy stored in a smoothing capacitor Cs1 connected to the first bridge circuit A11 is transferred to an LC serial body Lcr1 through the first bridge circuit A11. Further, the energy is transferred to a smoothing capacitor Cs2 connected to the second bridge circuit A2, from the LC serial body Lcr1 through the second bridge circuit A2. The device includes voltage detecting means 31, 32 for detecting voltages of the smoothing capacitors Cs1, Cs2, and an operation-mode determining means 100 for determining the operation mode according to voltage detection values of the smoothing capacitors Cs1, Cs2 and a voltage command value Vref. Gate-signal generating means 1A, 1B change a gate-signal pattern on the basis of the determined operation mode.
摘要翻译：要解决的问题：提供一种在抑制过电流的同时执行稳定的电压转换操作的DC / DC电力转换装置。解决方案：DC / DC电力转换装置配置如下。第一/第二桥接电路A11，A2的高电压侧开关元件和低压侧开关元件被接通/断开控制。因此，存储在与第一桥式电路A11连接的平滑电容器Cs1中的能量的一部分通过第一桥式电路A11传送到LC串联体Lcr1。此外，能量从LC串联体Lcr1通过第二桥式电路A2传递到连接到第二桥式电路A2的平滑电容器Cs2。该装置包括用于检测平滑电容器Cs1，Cs2的电压的电压检测装置31,32和用于根据平滑电容器Cs1，Cs2的电压检测值和电压指令值确定运行模式的运行模式确定装置100 VREF。门信号发生装置1A，1B基于确定的操作模式改变门信号模式。

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