公开(公告)号：US20070164685A1

公开(公告)日：2007-07-19

申请号：US10589266

申请日：2005-04-06

申请人： Yuji Hase ,  Akihiko Iwata ,  Shigeki Harada ,  Kikuo Izumi ,  Takashi Ohsawa

发明人： Yuji Hase ,  Akihiko Iwata ,  Shigeki Harada ,  Kikuo Izumi ,  Takashi Ohsawa

IPC分类号： H05B41/16

CPC分类号： H05B41/2822 ,  H05B41/2881

摘要： A discharge lamp lighting apparatus includes: a DC power supply to supply power to a HID lamp; a transformer to transmit a voltage of DC power supply to the HID lamp; a switch connected between the DC power supply and a primary winding of the transformer; switches connected to a primary side of the transformer; an inductance connected in series to a secondary winding of the transformer; a series resonance circuit connected to a secondary side of the transformer and including an inductance and a capacitor; and a parallel resonance circuit connected to the secondary side of the transformer and including an inductance and a capacitor. The switches are opened or closed to intermittently supply power from the DC power source to the transformer to always supply a current to the transformer.

摘要翻译： 放电灯点亮装置包括：向HID灯供电的直流电源; 变压器，用于向HID灯传输直流电源的电压; 连接在直流电源和变压器的初级绕组之间的开关; 连接到变压器初级侧的开关; 与变压器的次级绕组串联连接的电感; 串联谐振电路，连接到变压器的次级侧并且包括电感和电容器; 以及并联谐振电路，其连接到变压器的次级侧并且包括电感和电容器。 开关打开或关闭以间断地从直流电源向变压器供电，以始终向变压器供电。

公开(公告)号：US07023143B2

公开(公告)日：2006-04-04

申请号：US10851184

申请日：2004-05-24

申请人： Shigeki Harada ,  Kikuo Izumi ,  Takahiro Urakabe ,  Akihiron Suzuki ,  Akihiko Iwata ,  Takashi Ohsawa

发明人： Shigeki Harada ,  Kikuo Izumi ,  Takahiro Urakabe ,  Akihiron Suzuki ,  Akihiko Iwata ,  Takashi Ohsawa

IPC分类号： H05B37/02

CPC分类号： H05B41/2881 ,  H05B41/2886 ,  H05B41/2887 ,  H05B41/2928 ,  H05B41/388 ,  Y02B20/202

摘要： A ballast for a vehicle metal halide lamp is simplified using a DC-AC one-step-boost high frequency ballast system. To satisfy requirements specific to a metal halide lamp, a discharge developing capacitor is installed on a primary side of a transformer in parallel with a DC power supply, ensuring discharge development after a breakdown. To reduce the size and increase the operating voltage of the transformer, a booster circuit and voltage-doubler circuit are installed on the primary side and secondary side of the transformer, respectively. To reduce the size of the transformer and achieve a stable discharge, the ballast frequency is swept within a range between the specified minimum frequency and maximum frequency so that the center frequency is from 80 kHz to 120 kHz, and the same frequency is unsustained for more than 10 msec.

摘要翻译： 使用DC-AC一步升压高频镇流器系统简化了车辆金属卤化物灯的镇流器。 为了满足特定于金属卤化物灯的要求，放电显影电容器与直流电源平行地安装在变压器的初级侧，确保击穿后的放电发展。 为了减小变压器的尺寸和工作电压，分别在变压器的初级侧和次级侧安装升压电路和倍压器电路。 为了减小变压器的尺寸并实现稳定的放电，镇流器频率在指定的最小频率和最大频率之间的范围内扫描，使得中心频率为80kHz至120kHz，并且相同的频率不需要更多 超过10毫秒。

公开(公告)号：US06975077B2

公开(公告)日：2005-12-13

申请号：US10898242

申请日：2004-07-26

申请人： Kikuo Izumi ,  Shigeki Harada ,  Akihiko Iwata ,  Takashi Ohsawa

发明人： Kikuo Izumi ,  Shigeki Harada ,  Akihiko Iwata ,  Takashi Ohsawa

IPC分类号： H05B41/24 ,  H05B41/288 ,  H05B41/38 ,  H05B37/02 ,  G05F1/00

CPC分类号： H05B41/2881 ,  H05B41/2886 ,  H05B41/388 ,  Y02B20/202 ,  Y02B20/204 ,  Y10S315/07

摘要： A compact, low cost high intensity discharge lamp ballast apparatus which can carry out normal ballasting without extinction at discharge start includes a DC-AC inverting booster circuit, a first resonance circuit, and a second resonance circuit. The DC-AC inverting booster circuit includes a DC-AC converter transformer for converting a DC voltage fed from a DC power supply to an AC voltage in response to switching on and off of FETs, boosting the voltage. The first resonance circuit includes a leakage inductance connected in series with the secondary winding of the DC-AC converter transformer, and a first resonant capacitor connected in parallel with the secondary winding. The second resonance circuit includes a metal halide lamp, an ignitor transformer for producing a voltage to start lighting of the metal halide lamp, and a second resonant capacitor.

公开(公告)号：US20050057181A1

公开(公告)日：2005-03-17

申请号：US10898242

申请日：2004-07-26

申请人： Kikuo Izumi ,  Shigeki Harada ,  Akihiko Iwata ,  Takashi Ohsawa

发明人： Kikuo Izumi ,  Shigeki Harada ,  Akihiko Iwata ,  Takashi Ohsawa

IPC分类号： H05B41/24 ,  H05B41/288 ,  H05B41/38 ,  H05B37/02 ,  H05B39/04

CPC分类号： H05B41/2881 ,  H05B41/2886 ,  H05B41/388 ,  Y02B20/202 ,  Y02B20/204 ,  Y10S315/07

摘要： A compact, low cost high intensity discharge lamp ballast apparatus which can carry out normal ballasting without extinction at discharge start includes a DC-AC inverting booster circuit, a first resonance circuit, and a second resonance circuit. The DC-AC inverting booster circuit includes a DC-AC converter transformer for converting a DC voltage fed from a DC power supply to an AC voltage in response to switching on and off of FETs, boosting the voltage. The first resonance circuit includes a leakage inductance connected in series with the secondary winding of the DC-AC converter transformer, and a first resonant capacitor connected in parallel with the secondary winding. The second resonance circuit includes a metal halide lamp, an ignitor transformer for producing a voltage to start lighting of the metal halide lamp, and a second resonant capacitor.

摘要翻译： 一种紧凑的，低成本的高放电灯镇流器，其能够在放电开始时不进行消光而进行正常的镇流，包括DC-AC反相升压电路，第一谐振电路和第二谐振电路。 DC-AC反相升压电路包括DC-AC转换器变压器，用于响应于FET的导通和截止而将从DC电源馈送的DC电压转换为AC电压，从而提高电压。 第一谐振电路包括与DC-AC变换器变压器的次级绕组串联连接的漏电感，以及与次级绕组并联连接的第一谐振电容器。 第二谐振电路包括金属卤化物灯，用于产生开始点燃金属卤化物灯的电压的点火器变压器和第二谐振电容器。

公开(公告)号：US07164239B2

公开(公告)日：2007-01-16

申请号：US11039869

申请日：2005-01-24

申请人： Shigeki Harada ,  Kikuo Izumi ,  Akihiko Iwata

发明人： Shigeki Harada ,  Kikuo Izumi ,  Akihiko Iwata

IPC分类号： H05B37/02

CPC分类号： H05B41/2881 ,  H05B41/388 ,  Y02B20/204

摘要： A discharge lamp ballast circuit is provided which can prolong the life of a discharge lamp, and reduce the size and cost of the ballast circuit. It generates from an AC voltage boosted by a DC-AC inverter circuit a DC voltage higher than the breakdown voltage of an HID lamp, or a superimposed voltage in which a pulsating component is superimposed on the DC voltage, and starts the discharge by applying the DC voltage or the superimposed voltage to the HID lamp. It can make the life of the HID lamp longer than that of the case where a high voltage short pulse is applied to the HID lamp.

摘要翻译： 提供放电灯镇流器电路，其可以延长放电灯的寿命，并且减小镇流器电路的尺寸和成本。 由DC-AC逆变器电路提供的交流电压产生高于HID灯的击穿电压的直流电压或其中脉动分量叠加在直流电压上的重叠电压，并通过应用 直流电压或与HID灯叠加的电压。 它可以使HID灯的寿命比对HID灯施加高电压短脉冲的情况更长。

公开(公告)号：US20050179406A1

公开(公告)日：2005-08-18

申请号：US11039869

申请日：2005-01-24

申请人： Shigeki Harada ,  Kikuo Izumi ,  Akihiko Iwata

发明人： Shigeki Harada ,  Kikuo Izumi ,  Akihiko Iwata

IPC分类号： H05B41/288 ,  H05B41/38 ,  H05B39/04

CPC分类号： H05B41/2881 ,  H05B41/388 ,  Y02B20/204

摘要： A discharge lamp ballast circuit is provided which can prolong the life of a discharge lamp, and reduce the size and cost of the ballast circuit. It generates from an AC voltage boosted by a DC-AC inverter circuit a DC voltage higher than the breakdown voltage of an HID lamp, or a superimposed voltage in which a pulsating component is superimposed on the DC voltage, and starts the discharge by applying the DC voltage or the superimposed voltage to the HID lamp. It can make the life of the HID lamp longer than that of the case where a high voltage short pulse is applied to the HID lamp.

摘要翻译： 提供放电灯镇流器电路，其可以延长放电灯的寿命，并且减小镇流器电路的尺寸和成本。 由DC-AC逆变器电路提供的交流电压产生高于HID灯的击穿电压的直流电压或其中脉动分量叠加在直流电压上的重叠电压，并通过应用 直流电压或与HID灯叠加的电压。 它可以使HID灯的寿命比对HID灯施加高电压短脉冲的情况更长。

公开(公告)号：US08611120B2

公开(公告)日：2013-12-17

申请号：US13376517

申请日：2009-11-26

申请人： Tatsuya Okuda ,  Akihiko Iwata ,  Kenji Fujiwara ,  Kikuo Izumi

发明人： Tatsuya Okuda ,  Akihiko Iwata ,  Kenji Fujiwara ,  Kikuo Izumi

IPC分类号： H02M7/5387

CPC分类号： H02M7/487 ,  H02M7/49 ,  H02M7/501

摘要： A power conversion apparatus including: a three-level inverter including bridge circuits each including a first semiconductor switching device and a second semiconductor switching device connected in series, the bridge circuits being connected to a positive terminal and a negative terminal of a DC power supply, and switch circuits having bidirectional characteristics and connected to respective AC output terminals of the bridge circuits which are the connection points between the first semiconductor switching devices and the second semiconductor switching devices, and to an intermediate potential point of the DC power supply; and single-phase inverters each including a plurality of semiconductor switching devices and respectively connected in series to the AC output terminals of the bridge circuits. The sum of an output voltage of the three-level inverter and output voltages of the single-phase inverters is supplied to a load.

摘要翻译： 一种电力转换装置，包括：三电平逆变器，包括各自包括串联连接的第一半导体开关装置和第二半导体开关装置的桥式电路，所述桥式电路与直流电源的正极端子和负极端子连接， 和具有双向特性的开关电路，并连接到作为第一半导体开关器件和第二半导体开关器件之间的连接点的桥接电路的各个AC输出端子以及直流电源的中间电位点; 以及各自包括多个半导体开关器件并且分别串联连接到桥接电路的AC输出端子的单相逆变器。 三相逆变器的输出电压和单相逆变器的输出电压的和被提供给负载。

公开(公告)号：US20120092915A1

公开(公告)日：2012-04-19

申请号：US13376517

申请日：2009-11-26

申请人： Tatsuya Okuda ,  Akihiko Iwata ,  Kenji Fujiwara ,  Kikuo Izumi

发明人： Tatsuya Okuda ,  Akihiko Iwata ,  Kenji Fujiwara ,  Kikuo Izumi

IPC分类号： H02M7/5387

CPC分类号： H02M7/487 ,  H02M7/49 ,  H02M7/501

摘要： A power conversion apparatus including: a three-level inverter including bridge circuits each including a first semiconductor switching device and a second semiconductor switching device connected in series, the bridge circuits being connected to a positive terminal and a negative terminal of a DC power supply, and switch circuits having bidirectional characteristics and connected to respective AC output terminals of the bridge circuits which are the connection points between the first semiconductor switching devices and the second semiconductor switching devices, and to an intermediate potential point of the DC power supply; and single-phase inverters each including a plurality of semiconductor switching devices and respectively connected in series to the AC output terminals of the bridge circuits. The sum of an output voltage of the three-level inverter and output voltages of the single-phase inverters is supplied to a load.

摘要翻译： 一种电力转换装置，包括：三电平逆变器，包括各自包括串联连接的第一半导体开关装置和第二半导体开关装置的桥式电路，所述桥式电路与直流电源的正极端子和负极端子连接， 和具有双向特性的开关电路，并连接到作为第一半导体开关器件和第二半导体开关器件之间的连接点的桥接电路的各个AC输出端子以及直流电源的中间电位点; 以及各自包括多个半导体开关器件并且分别串联连接到桥接电路的AC输出端子的单相逆变器。 三相逆变器的输出电压和单相逆变器的输出电压的和被提供给负载。

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：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。