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1. 发明专利

JP2014039444A System interconnection inverter device 审中-公开
标题翻译：系统互连逆变器装置
公开(公告)号：JP2014039444A
公开(公告)日：2014-02-27
申请号：JP2012181777
申请日：2012-08-20
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： NAKABAYASHI KOICHI , TAKEUCHI IPPEI
IPC分类号： H02J3/38 , H02H3/16 , H02M7/48
CPC分类号： Y02E10/563
摘要： PROBLEM TO BE SOLVED: To provide a system interconnection inverter device capable of exactly determining a DC ground fault and positively performing protection from a DC ground fault accident.SOLUTION: The system interconnection inverter device 3, converting DC power into AC power and performing interconnection to a system, a ground fault current detector 7 that detects a ground fault current running through a resistance component and determines whether or not a ground fault state exists on the basis of a ground fault current value, and a controller 8 that controls to stop an operation of an inverter circuit 5 for converting AC power into DC power on the basis of the determination of the ground fault current detector 7.
摘要翻译：要解决的问题：提供一种能够精确确定直流接地故障并积极实施直流接地故障事故保护的系统互连逆变器装置。解决方案：系统互连逆变器装置3将直流电转换为交流电并进行互连系统，接地故障电流检测器7，其检测通过电阻分量运行的接地故障电流，并且基于接地故障电流值确定是否存在接地故障状态;以及控制器8，其控制停止操作用于根据接地故障电流检测器7的确定将交流电转换成直流电力的逆变器电路5。

2. 发明专利

JP2013038917A Failure diagnosis device, electric power conversion system, and fault diagnosis method 有权
标题翻译：故障诊断装置，电力转换系统和故障诊断方法
公开(公告)号：JP2013038917A
公开(公告)日：2013-02-21
申请号：JP2011173052
申请日：2011-08-08
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KISHIWADA YU , TAKEUCHI IPPEI
IPC分类号： H02M1/00 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a failure diagnosis device capable of executing fault diagnosis of an electric power conversion system that has various input power patterns and a plurality of input power.SOLUTION: The failure diagnosis device for diagnosing a fault in an electric power conversion system which converts a plurality of input power for power generation, includes: input power measurement sections 21-1, 21-2 that measure an input power values for each input power; an output power measurement section 23 that measures an output power value of output power; and a fault diagnosis section 22 that determines an estimated value of output power on the basis of a sum total of input power values and power conversion efficiency and diagnoses a fault in the electric power conversion system on the basis of a difference between the output power values and the estimated value.
摘要翻译：要解决的问题：提供能够执行具有各种输入功率模式和多个输入功率的电力转换系统的故障诊断的故障诊断装置。解决方案：用于诊断转换用于发电的多个输入电力的电力转换系统中的故障的故障诊断装置包括：测量输入功率值的输入功率测量部21-1,21-2，每个输入功率; 测量输出功率的输出功率值的输出功率测量部23; 以及故障诊断部22，其基于输入功率值和功率转换效率的总和来确定输出功率的估计值，并且基于输出功率值之间的差来诊断电力转换系统中的故障和估计值。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2009165265A Power converter 有权
标题翻译：电源转换器
公开(公告)号：JP2009165265A
公开(公告)日：2009-07-23
申请号：JP2008000392
申请日：2008-01-07
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： ITO HIROSHI , KAWAKAMI TOMOYUKI , FUJIWARA KENJI , NAKABAYASHI KOICHI , TAKEUCHI IPPEI
IPC分类号： H02M7/515 , H02J3/46 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a power converter in which a first single-phase inverter 2 for inputting a DC voltage generated by a solar cell 1 is connected in series with a second single-phase inverter 4 for DC-inputting a second capacitor 5 so as to output AC power as the total sum of the respective generated voltages, capable of suppressing a voltage rise in the second capacitor 5 when a load 7 changes suddenly. SOLUTION: When a voltage command 13a generated according to the voltage of the load 7 exceeds specified voltage threshold values 14, 15, by outputting voltage from the first single-phase inverter 2, the first single-phase inverter 2 outputs one pulse voltage in a half period and the second single-phase inverter 4 outputs the difference by PWM control. When the voltage of the second capacitor 5 becomes a predetermined voltage value 26 or higher, the specified voltage threshold values 14, 15 are changed to voltage threshold values 17, 18 of which absolute values are increased. Therefore, the amount of power output from the first single-phase inverter 2 is reduced to increase the discharged capacity of the second capacitor 5 through the second single-phase inverter 4. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种电力转换器，其中用于输入由太阳能电池1产生的直流电压的第一单相逆变器2与用于DC输入的第二单相逆变器4串联连接以便输出AC电力作为各个发电电压的总和，当负载7突然变化时能够抑制第二电容器5的电压上升。解决方案：当根据负载7的电压产生的电压指令13a超过指定电压阈值14,15时，通过从第一单相逆变器2输出电压，第一单相逆变器2输出一个脉冲第二单相逆变器4通过PWM控制输出差值。当第二电容器5的电压变为预定电压值26或更高时，指定的电压阈值14,15被改变为绝对值增加的电压阈值17,18。因此，从第一单相逆变器2输出的功率量减少，以通过第二单相逆变器4增加第二电容器5的放电容量。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2014059245A Electric power display device 审中-公开
标题翻译：电力显示装置
公开(公告)号：JP2014059245A
公开(公告)日：2014-04-03
申请号：JP2012205144
申请日：2012-09-19
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TAKEUCHI IPPEI , HATTORI TAKASHI , KAYANO SHIGEMI , OSHIME TETSUNARI
IPC分类号： G01R22/00 , G01R11/00 , H02J3/38 , H02J13/00
CPC分类号： Y02E40/72 , Y04S10/12
摘要： PROBLEM TO BE SOLVED: To solve the problem in which in order to monitor total power consumption of a residential house, an electric power display device configured to calculate power consumption of an entire residential house from a measurement current value by a current transformer attached to a trunk circuit breaker part in a power distribution switchboard is employed, but there is a case that two contracts of a typical pay-as-you-go light contract and a midnight power contract are concluded with an electric power company in the residential house having a power storage type electric heater, a midnight power hot-water device or the like installed, and in the residential house having an electric power line based on such two different contracts wired, the power consumption of the entire residential house cannot be accurately grasped by a current measurement by one trunk circuit breaker part described in the above.SOLUTION: An electric current sensor is attached to respective trunk circuit breaker parts of an AC electric power wiring based on two different contracts, and an electric power value is individually calculated from respective measurement electric current values. By adding these electric current values, the power consumption of the entire residential house is accurately grasped.
摘要翻译：要解决的问题：为了解决为了监视住宅的总功耗的问题，一种电力显示装置，被配置为通过附接到一个住宅的电流互感器从测量电流值计算整个住宅的功耗使用配电柜中的主干断路器部分，但是有一个典型的现收现付轻型合同和午夜电力合同的两个合同与住宅房屋中的电力公司缔结，蓄电式电加热器，午夜电热水装置等，并且在具有基于这样的两种不同合同的电力线的住宅中有线，整个住宅的功耗无法被一个通过上述一个中继断路器部分的电流测量。解决方案：电流传感器连接到相应的主干电路基于两个不同的合约的交流电力布线的断路器部分和各个测量电流值分别计算电功率值。通过添加这些电流值，可以准确掌握整个住宅的功耗。

5. 发明专利

JP2011010511A Power converter 有权
标题翻译：电源转换器
公开(公告)号：JP2011010511A
公开(公告)日：2011-01-13
申请号：JP2009153651
申请日：2009-06-29
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TAKEUCHI IPPEI , NAKABAYASHI KOICHI
IPC分类号： H02M7/497 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a power converter in which a plurality of inverters are connected in series and which prevents input voltages to inverters other than an inverter with the maximum input voltage from turning to overvoltage.SOLUTION: The power converter includes a gate pulse generator 18, which outputs a gate pulse signal to an inverter 6 with the maximum input voltage among a plurality of single-phase inverters whose AC terminals are connected in series; voltage detectors 12 and 13, which detect input voltages to the inverters 7 and 8 other than the inverter 6 among the plurality of single-phase inverters, respectively; and a control circuit 14, which controls the gate pulse generator 18 to generate gate pulse signals corresponding to the input voltages of the inverters 7 and 8.
摘要翻译：要解决的问题：提供一种电力转换器，其中多个反相器串联连接，并且防止具有最大输入电压的逆变器以外的逆变器的输入电压转变为过电压。解决方案：功率转换器包括栅极脉冲发电机18，其在AC端子串联连接的多个单相逆变器中以最大输入电压向反相器6输出门脉冲信号; 电压检测器12和13分别检测多个单相逆变器中的除逆变器6之外的反相器7和8的输入电压; 以及控制电路14，其控制栅极脉冲发生器18产生对应于反相器7和8的输入电压的门脉冲信号。

6. 发明专利

JP2010183670A Power conversion apparatus 有权
标题翻译：功率转换装置
公开(公告)号：JP2010183670A
公开(公告)日：2010-08-19
申请号：JP2009022891
申请日：2009-02-03
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TAKEUCHI IPPEI , NAKABAYASHI KOICHI
IPC分类号： H02M7/48
摘要： PROBLEM TO BE SOLVED: To reduce fluctuation in the input voltage of each inverter excluding an inverter whose input voltage is highest, relating to a power conversion apparatus in which multiple inverters are connected in series. SOLUTION: The power conversion apparatus includes a gate pulse generator 29 that outputs a gate pulse signal to the inverter 6 whose input voltage is highest, a voltage detector 12 that detects the input voltage of the inverter 6, capacitors 10, 11 that respectively smooth the input voltages of inverters 7, 8, power detectors 13, 14 that respectively detect the powers of the capacitors 10, 11, a control circuit 15 that controls the gate pulse generator 29 so as to generate a gate pulse signal corresponding to a target value of output current, a target value of output power, an input voltage of the inverter 6, a power of the capacitor 10, and a power of the capacitor 11. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了减少除输入电压最高的逆变器之外的每个逆变器的输入电压的波动，涉及多个逆变器串联连接的电力转换装置。解决方案：电力转换装置包括：门脉冲发生器29，其向输入电压最高的逆变器6输出门脉冲信号;电压检测器12，其检测逆变器6的输入电压;电容器10,11; 分别平滑分别检测电容器10,11的功率的逆变器7,8，功率检测器13,14的输入电压，控制电路15，其控制栅极脉冲发生器29，以产生对应于栅极脉冲发生器29的栅极脉冲信号输出电流的目标值，输出功率的目标值，反相器6的输入电压，电容器10的功率，以及电容器11的功率。（C）2010，JPO＆INPIT

7. 发明专利

JP2009247185A System-cooperative inverter and its self-sustaining operation method 审中-公开
标题翻译：系统合作逆变器及其自续运行方法
公开(公告)号：JP2009247185A
公开(公告)日：2009-10-22
申请号：JP2008093627
申请日：2008-03-31
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： ANDO NOBORU , NAKABAYASHI KOICHI , OSADA KAZUYA , TAKEUCHI IPPEI
IPC分类号： H02M7/48
摘要： PROBLEM TO BE SOLVED: To suppress an inverter having a low bus-bar voltage from being overcharged even to a light load when switching a system linkage operation to an autonomous operation, in a system-cooperative inverter connecting a plurality of single-phase inverters in series. SOLUTION: The inverter has an inverter unit 6 outputting the summation voltage of voltages generated by single-phase inverters 6a-6c which convert an input DC voltage into an AC voltage for output, a capacitor 5 and capacitors 24b, 24c each connected between DC bus-bars which connect to DC-side terminals of each single-phase inverters 6a-6c, a resistor 26 connected to both ends of the capacitor 5 which maintains the highest voltage during operation of the inverter unit 6, switches 12a, 12b which switch a connection destination of the inverter unit 6, the system 17 and the load 18, and a controller 9 which controls the operations of the converter 4, the inverter unit 6 and the switches 12a, 12b. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：在将系统联动操作切换到自主操作时，为了抑制具有低汇流条电压的逆变器即使对于轻负载也被过充电，在连接多个单向电压的系统协作逆变器中，相逆变器串联。
解决方案：逆变器具有逆变器单元6，其输出将输入DC电压转换成用于输出的AC电压的单相逆变器6a-6c产生的电压的和电压，电容器5和电容器24b，24c，每个连接在连接到每个单相逆变器6a-6c的直流侧端子的直流母线之间，连接到在逆变器单元6的操作期间保持最高电压的电容器5的两端的电阻器26，开关12a，12b 其切换逆变器单元6，系统17和负载18的连接目的地，以及控制变换器4，逆变器单元6和开关12a，12b的操作的控制器9。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2012147672A Power conversion device 审中-公开
标题翻译：电源转换器件
公开(公告)号：JP2012147672A
公开(公告)日：2012-08-02
申请号：JP2012108631
申请日：2012-05-10
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KIMURA TOMOAKI , TAKEUCHI IPPEI
IPC分类号： H02M7/48
CPC分类号： H02M7/48 , H02J3/383 , H02M2001/322 , Y02E10/563
摘要： PROBLEM TO BE SOLVED: To obtain a power conversion device that makes it possible to improve maintainability after a stop of the power conversion device without reducing power conversion efficiency of the power conversion device in operation.SOLUTION: A power conversion device comprises: an inverter circuit 5 converting input direct-current power to alternating-current power to output it; a capacitor 6 connected to between input side terminals of the inverter circuit 5; discharging means 7 installed so as to be capable of being connected in parallel with the capacitor 6 and for discharging electric charge accumulated in the capacitor 6; opening/closing means 8 connected in series with the discharging means 7 and for opening/closing the electrical connection between the capacitor 6 and the discharging means 7; and opening/closing control means 11 for controlling the opening/closing means 8 based on a state of the inverter circuit 5.
摘要翻译：要解决的问题：获得能够在不降低电力转换装置的运行中的电力转换效率的情况下提高电力转换装置停止后的维护性的电力转换装置。解决方案：电力转换装置包括：逆变器电路5，其将输入直流电力转换为交流电力以输出; 连接到逆变器电路5的输入侧端子之间的电容器6; 放电装置7安装成能够与电容器6并联并且用于放电积累在电容器6中的电荷; 与排出装置7串联连接并用于打开/关闭电容器6和排出装置7之间的电连接的开闭装置8; 以及基于逆变器电路5的状态控制开闭装置8的开闭控制装置11.（C）2012，JPO＆INPIT

9. 发明专利

JP2010279167A Power conversion apparatus and fault detection method of the same 有权
标题翻译：电力转换装置及其故障检测方法
公开(公告)号：JP2010279167A
公开(公告)日：2010-12-09
申请号：JP2009129143
申请日：2009-05-28
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KOBE SATOSHI , TAKEUCHI IPPEI , NAKABAYASHI KOICHI
IPC分类号： H02M3/155
摘要： PROBLEM TO BE SOLVED: To provide a power conversion apparatus that detects a fault in the converter.
SOLUTION: The power conversion apparatus includes a step-down converter 3 which includes a switching element Q2 and a bypass relay Ry2, which are connected in parallel, and steps down a DC voltage applied from a DC power supply 1 and a protection circuit 2 which includes a switching element Q1 and a relay Ry1, which are connected in parallel, is connected in series between the DC power supply 1 and the step-down converter 3 and protects a circuit in a post-stage of the step-down converter 3, and detects that either the step-down converter 3 or the protection circuit 2 breaks down.
COPYRIGHT: (C)2011,JPO&INPIT

10. 发明专利

JP2010011702A Power conversion apparatus 审中-公开
标题翻译：功率转换装置
公开(公告)号：JP2010011702A
公开(公告)日：2010-01-14
申请号：JP2008171320
申请日：2008-06-30
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： INUKAI YOSHINORI , NISHIO NAOKI , NAKABAYASHI KOICHI , TAKEUCHI IPPEI
IPC分类号： H02M7/48 , H02M7/537
摘要： PROBLEM TO BE SOLVED: To improve distortion in output current which is caused by setting dead time, relating to a power conversion apparatus in which a plurality of single-phase inverters are connected in series. SOLUTION: The power conversion apparatus includes a converter which generates a DC power source (first DC power source) of an inverter 6-1 which outputs a maximum voltage among single-phase inverters provided to an inverter unit 6, a DC/DC converter which generates a DC power source (second DC power source) of inverters 6-2 and 6-3 using the first DC power source, and a control circuit 8 which applies, for control, a gate pulse with the dead time setting to a switching element in the inverter unit 6. The control circuit 8 generates a dead time correction signal based on a target current value and a PWM signal for controlling the switching element in the inverter unit 6, and generates a gate pulse for controlling the inverters 6-2 and 6-3 using an additive output of the dead time correction signal and the PWM signal. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：涉及与多个单相逆变器串联连接的电力转换装置相关的设定死区时间引起的输出电流的失真。电力转换装置包括：转换器，其生成在设置到逆变器单元6的单相逆变器中输出最大电压的逆变器6-1的直流电源（第一直流电源），DC / DC转换器，其使用第一DC电源产生逆变器6-2和6-3的直流电源（第二直流电源）;以及控制电路8，其控制具有死区时间设定的门脉冲逆变器单元6中的开关元件。控制电路8基于目标电流值和用于控制逆变器单元6中的开关元件的PWM信号产生死区时间校正信号，并且产生用于控制逆变器6的栅极脉冲 -2和6-3，使用死区时间校正信号和PWM信号的加法输出。版权所有（C）2010，JPO＆INPIT

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