公开(公告)号：US20100177540A1

公开(公告)日：2010-07-15

申请号：US12715430

申请日：2010-03-02

申请人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Noriyuki Matsubara ,  Takashi Kumagai

发明人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Noriyuki Matsubara ,  Takashi Kumagai

IPC分类号： H02M7/48

CPC分类号： H02J3/383 ,  H02M7/483 ,  H02M2001/007 ,  H02M2001/0077 ,  Y02E10/563

摘要： In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with a voltage ratio of 1:3:9 as respective inputs are connected in series. Gradational output voltage control of an output voltage is carried out using the sum of the respective generated AC voltages. Also, a solar light voltage is boosted by a chopper circuit to generate the highest voltage DC power source. When the solar light voltage exceeds a predetermined voltage, the boosting of the chopper circuit is stopped, thereby reducing power loss due to the boosting.

摘要翻译： 在提高太阳光电压的电力转换装置中，将其转换为交流电并向负载或系统提供AC电力，降低功率损耗并提高效率。 三相单相逆变器的AC侧以相互输入的电压比为1：3：9的各个电源的DC电源串联连接的逆变器单元。 使用各自产生的AC电压的和来执行输出电压的等级输出电压控制。 此外，太阳能光伏电压由斩波电路升压以产生最高电压的直流电源。 当太阳光电压超过预定电压时，斩波电路的升压停止，由此降低由于升压引起的功率损耗。

公开(公告)号：US07719865B2

公开(公告)日：2010-05-18

申请号：US11816456

申请日：2006-02-21

申请人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Noriyuki Matsubara ,  Takashi Kumagai

发明人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Noriyuki Matsubara ,  Takashi Kumagai

IPC分类号： H02M7/49

CPC分类号： H02J3/383 ,  H02M7/483 ,  H02M2001/007 ,  H02M2001/0077 ,  Y02E10/563

摘要： In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with a voltage ratio of 1:3:9 as respective inputs are connected in series. Gradational output voltage control of an output voltage is carried out using the sum of the respective generated AC voltages. Also, a solar light voltage is boosted by a chopper circuit to generate the highest voltage DC power source. When the solar light voltage exceeds a predetermined voltage, the boosting of the chopper circuit is stopped, thereby reducing power loss due to the boosting.

摘要翻译： 在提高太阳光电压的电力转换装置中，将其转换为交流电并向负载或系统提供AC电力，降低功率损耗并提高效率。 三相单相逆变器的AC侧以相互输入的电压比为1：3：9的各个电源的DC电源串联连接的逆变器单元。 使用各自产生的AC电压的和来执行输出电压的等级输出电压控制。 此外，太阳能光伏电压由斩波电路升压以产生最高电压的直流电源。 当太阳光电压超过预定电压时，斩波电路的升压停止，由此降低由于升压引起的功率损耗。

公开(公告)号：US07602626B2

公开(公告)日：2009-10-13

申请号：US11816029

申请日：2006-02-21

申请人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada

发明人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada

IPC分类号： H02M7/00

CPC分类号： H02M7/53871 ,  H02M7/49 ,  H02M2001/0077 ,  Y10T307/685

摘要： In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, a second inverter is connected in series to one of two terminals on the AC side of a first inverter that uses, as its DC source, a DC voltage boosted from a solar light voltage by a chopper circuit. A third inverter is connected in series to the other terminal. Then, output voltages of the second and third inverters are controlled to be equal, and an output voltage is provided by using the sum of the generated voltages of the first, second, and third inverters. Thus, a mid-point potential of the DC power source is made equivalent to an intermediate potential of the output voltage of the power conversion apparatus, that is, the mid-point potential (ground potential) of a system.

摘要翻译： 在升压太阳光电压的电力转换装置中，将其转换为交流电并向负载或系统提供AC电力，第二逆变器串联连接到第一逆变器的AC侧的两个端子中的一个， 其直流电源，通过斩波电路从太阳光电压提升的直流电压。 第三个逆变器串联连接到另一个端子。 然后，将第二和第三变换器的输出电压控制为相等，并且通过使用第一，第二和第三逆变器的发电电压之和来提供输出电压。 因此，直流电源的中点电位等于电力转换装置的输出电压的中间电位，即系统的中点电位（地电位）。

公开(公告)号：US20080192519A1

公开(公告)日：2008-08-14

申请号：US11816456

申请日：2006-02-21

申请人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Noriyuki Matsubara ,  Takashi Kumagai

发明人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Noriyuki Matsubara ,  Takashi Kumagai

IPC分类号： H02M7/48

CPC分类号： H02J3/383 ,  H02M7/483 ,  H02M2001/007 ,  H02M2001/0077 ,  Y02E10/563

摘要： In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with a voltage ratio of 1:3:9 as respective inputs are connected in series. Gradational output voltage control of an output voltage is carried out using the sum of the respective generated AC voltages. Also, a solar light voltage is boosted by a chopper circuit to generate the highest voltage DC power source. When the solar light voltage exceeds a predetermined voltage, the boosting of the chopper circuit is stopped, thereby reducing power loss due to the boosting.

摘要翻译： 在提高太阳光电压的电力转换装置中，将其转换为交流电并向负载或系统提供AC电力，降低功率损耗并提高效率。 三相单相逆变器的AC侧以相互输入的电压比为1：3：9的各个电源的DC电源串联连接的逆变器单元。 使用各自产生的AC电压的和来执行输出电压的等级输出电压控制。 此外，太阳能光伏电压由斩波电路升压以产生最高电压的直流电源。 当太阳光电压超过预定电压时，斩波电路的升压停止，由此降低由于升压引起的功率损耗。

公开(公告)号：US20090015071A1

公开(公告)日：2009-01-15

申请号：US11816029

申请日：2006-02-21

申请人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada

发明人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada

IPC分类号： H02J5/00

CPC分类号： H02M7/53871 ,  H02M7/49 ,  H02M2001/0077 ,  Y10T307/685

摘要： In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, a second inverter is connected in series to one of two terminals on the AC side of a first inverter that uses, as its DC source, a DC voltage boosted from a solar light voltage by a chopper circuit. A third inverter is connected in series to the other terminal. Then, output voltages of the second and third inverters are controlled to be equal, and an output voltage is provided by using the sum of the generated voltages of the first, second, and third inverters. Thus, a mid-point potential of the DC power source is made equivalent to an intermediate potential of the output voltage of the power conversion apparatus, that is, the mid-point potential (ground potential) of a system.

摘要翻译： 在升压太阳光电压的电力转换装置中，将其转换为交流电并向负载或系统提供AC电力，第二逆变器串联连接到第一逆变器的AC侧的两个端子中的一个， 其直流电源，通过斩波电路从太阳光电压提升的直流电压。 第三个逆变器串联连接到另一个端子。 然后，将第二和第三变换器的输出电压控制为相等，并且通过使用第一，第二和第三逆变器的发电电压之和来提供输出电压。 因此，直流电源的中点电位等于电力转换装置的输出电压的中间电位，即系统的中点电位（地电位）。

公开(公告)号：US08559202B2

公开(公告)日：2013-10-15

申请号：US12715430

申请日：2010-03-02

申请人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Noriyuki Matsubara ,  Takashi Kumagai

发明人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Noriyuki Matsubara ,  Takashi Kumagai

IPC分类号： H02M7/49

CPC分类号： H02J3/383 ,  H02M7/483 ,  H02M2001/007 ,  H02M2001/0077 ,  Y02E10/563

摘要： In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with a voltage ratio of 1:3:9 as respective inputs are connected in series. Gradational output voltage control of an output voltage is carried out using the sum of the respective generated AC voltages. Also, a solar light voltage is boosted by a chopper circuit to generate the highest voltage DC power source. When the solar light voltage exceeds a predetermined voltage, the boosting of the chopper circuit is stopped, thereby reducing power loss due to the boosting.

摘要翻译： 在提高太阳光电压的电力转换装置中，将其转换为交流电并向负载或系统提供AC电力，降低功率损耗并提高效率。 三相单相逆变器的AC侧以相互输入的电压比为1：3：9的各个电源的DC电源串联连接的逆变器单元。 使用各自产生的AC电压的和来执行输出电压的等级输出电压控制。 此外，太阳能光伏电压由斩波电路升压以产生最高电压的直流电源。 当太阳光电压超过预定电压时，斩波电路的升压停止，由此降低由于升压引起的功率损耗。

公开(公告)号：US07596008B2

公开(公告)日：2009-09-29

申请号：US11816324

申请日：2006-02-21

申请人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Hiroshi Ito ,  Tomoyuki Kawakami

发明人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Hiroshi Ito ,  Tomoyuki Kawakami

IPC分类号： H02M7/48 ,  H02M7/493

CPC分类号： H02M7/5387 ,  H02M2001/0077 ,  Y10T307/675

摘要： A power conversion apparatus includes a first single-phase inverter that uses as a DC power source a first DC voltage that is boosted from a solar light voltage by a boosting chopper circuit. The first single-phase inverter is arranged between two single-phase inverters that use second DC power sources that are supplied from the first DC power source. AC sides of the respective single-phase inverters are connected in series. A power conditioner thus configured provides an output voltage using the sum of the generated voltages of the respective single-phase inverters. Chopper circuits are connected between the first DC power source and the second DC power sources, and power is supplied to the second DC power sources from the first DC power source via switching devices in the single-phase inverters.

摘要翻译： 电力转换装置包括：第一单相逆变器，其使用由升压斩波电路从太阳光电压升压的第一直流电压作为直流电源。 第一单相逆变器布置在使用从第一直流电源提供的第二直流电源的两个单相逆变器之间。 各个单相逆变器的交流侧串联连接。 这样配置的功率调节器使用各个单相逆变器的发电电压之和来提供输出电压。 斩波电路连接在第一直流电源和第二直流电源之间，并通过单相逆变器中的开关装置从第一直流电源向第二直流电源供电。

公开(公告)号：US20080101101A1

公开(公告)日：2008-05-01

申请号：US11816324

申请日：2006-02-21

申请人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Hiroshi Ito ,  Tomoyuki Kawakami

发明人： Akihiko Iwata ,  Makoto Seto ,  Masaki Yamada ,  Shigeki Harada ,  Hiroshi Ito ,  Tomoyuki Kawakami

IPC分类号： H02M7/48

CPC分类号： H02M7/5387 ,  H02M2001/0077 ,  Y10T307/675

摘要： A power conversion apparatus includes a first single-phase inverter that uses ask a DC power source a first DC voltage that is boosted from a solar light voltage by a boosting chopper circuit. The first single-phase inverter is arranged between two single-phase inverters that use second DC power sources that are supplied from the first DC power source. AC sides of the respective single-phase inverters are connected in series. A power conditioner thus configured provides an output voltage using the sum of the generated voltages of the respective single-phase inverters. Chopper circuits are connected between the first DC power source and the second DC power sources, and power is supplied to the second DC power sources from the first DC power source via switching devices in the single-phase inverters.

摘要翻译： 电力转换装置包括：第一单相逆变器，其使用直流电源询问由升压斩波电路从太阳光电压升压的第一直流电压。 第一单相逆变器布置在使用从第一直流电源提供的第二直流电源的两个单相逆变器之间。 各个单相逆变器的交流侧串联连接。 这样配置的功率调节器使用各个单相逆变器的发电电压之和来提供输出电压。 斩波电路连接在第一直流电源和第二直流电源之间，并通过单相逆变器中的开关装置从第一直流电源向第二直流电源供电。

公开(公告)号：US07438420B2

公开(公告)日：2008-10-21

申请号：US11669471

申请日：2007-01-31

申请人： Shigeki Harada ,  Taichiro Tamida ,  Akihiko Iwata

发明人： Shigeki Harada ,  Taichiro Tamida ,  Akihiko Iwata

IPC分类号： G03B21/26 ,  G03B21/20 ,  G03B21/18 ,  G03B21/16 ,  G02F1/133

CPC分类号： H04N9/3155 ,  H04N9/3114

摘要： A display apparatus having a control unit which controls the light source temperature so that the temperature remains within a predetermined temperature range, a light modulation device for displaying images by receiving light emitted from the light source, and modulating the light according to the image data, and a light source controlling unit which adjusts the amount of light that enters the light modulation device, by controlling electrical power fed to the light source, according to the brightness data. Even if a contrast ratio is improved by changing the amount of light of an HID lamp, a passive optical modulation type display apparatus can be provided without reducing the lifetime of the light source lamp.

摘要翻译： 一种显示装置，具有控制单元，其控制光源温度使得温度保持在预定温度范围内;光调制装置，用于通过接收从光源发射的光来显示图像，并根据图像数据调制光， 以及光源控制单元，其通过根据亮度数据控制馈送到光源的电力来调节进入光调制装置的光量。 即使通过改变HID灯的光量来提高对比度，也可以提供无源光调制型显示装置，而不会降低光源灯的寿命。

公开(公告)号：US20080136977A1

公开(公告)日：2008-06-12

申请号：US11761781

申请日：2007-06-12

申请人： Shigeki HARADA ,  Takayoshi Nagai ,  Ikuro Suga ,  Akihiko Iwata ,  Yoshiteru Suzuki ,  Akira Okumura ,  Jun Someya ,  Kuniko Kojima

发明人： Shigeki HARADA ,  Takayoshi Nagai ,  Ikuro Suga ,  Akihiko Iwata ,  Yoshiteru Suzuki ,  Akira Okumura ,  Jun Someya ,  Kuniko Kojima

IPC分类号： H04N5/74

CPC分类号： H05B41/2928 ,  H04N9/312 ,  H04N9/3155

摘要： A projection display uses a light modulating device to modulate, in accordance with image data, light radiated from a light source, project the modulated light onto a screen, and display an image. The projection display separates a unit of time configuring the image data into an effective light time when the light modulating device can express the light as an image on the screen and an ineffective light time when the light modulating device cannot express the light as an image on the screen. The projection display increases the power supplied to the light source during the effective light time over the power supplied to the light source during the ineffective light time.

摘要翻译： 投影显示器使用光调制装置根据图像数据调制从光源辐射的光，将调制的光投影到屏幕上，并显示图像。 当光调制装置可以将光作为图像显示在屏幕上时，投影显示器将构成图像数据的时间单位分离成有效光时间，并且当光调制装置不能将光作为图像表示时，无效的光时间 屏幕。 在无效光时间期间，投影显示器增加在有效光照时间内提供给光源的功率，而不是提供给光源的功率。