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1. 发明授权

US08264162B2 Inverter apparatus 有权
标题翻译：变频器
公开(公告)号：US08264162B2
公开(公告)日：2012-09-11
申请号：US12479089
申请日：2009-06-05
申请人： Goang-Woo Nam , Junichi Hagino , Kenichi Fukumoto
发明人： Goang-Woo Nam , Junichi Hagino , Kenichi Fukumoto
IPC分类号： H05B37/00
CPC分类号： H05B41/282 , Y02B20/183 , Y10T307/422
摘要： A switching circuit includes multiple transistors connected to the primary winding of a transformer, and alternately applies an input voltage and a ground voltage to the primary winding according to the ON/OFF operations of the transistors. Multiple ballast capacitors are respectively provided to multiple fluorescent lamps. One terminal of each ballast capacitor is connected to the secondary winding so as to form a common terminal. The other terminal thereof is connected to the fluorescent lamp. A first capacitor and a second capacitor are arranged in this order in series between an connection node that connects the fluorescent lamp to be monitored and the corresponding ballast capacitor and the ground terminal. An abnormal state judging unit compares the voltage at the connection node that connects the first capacitor and the second capacitor with a predetermined threshold voltage.
摘要翻译：开关电路包括连接到变压器的初级绕组的多个晶体管，并且根据晶体管的导通/截止操作交替地向初级绕组施加输入电压和接地电压。多个镇流电容器分别提供给多个荧光灯。每个镇流电容器的一个端子连接到次级绕组，以形成公共端子。其另一端连接到荧光灯。第一电容器和第二电容器以连接被监视的荧光灯的连接节点和相应的镇流电容器与接地端子之间的顺序排列。异常状态判断单元将连接第一电容器和第二电容器的连接节点处的电压与预定阈值电压进行比较。

2. 发明授权

US07936137B2 Inverter 有权
标题翻译：逆变器
公开(公告)号：US07936137B2
公开(公告)日：2011-05-03
申请号：US12210079
申请日：2008-09-12
申请人： Yoshinori Imanaka , Kenichi Fukumoto
发明人： Yoshinori Imanaka , Kenichi Fukumoto
IPC分类号： H05B39/00 , H05B39/04
CPC分类号： H05B41/2806 , Y02B20/22
摘要： A soft start circuit generates a soft start voltage Vss which changes with time at a starting time of lighting an EEFL. A pulse width modulator generates a PWM signal Vpwm whose duty ratio is feedback-controlled so that a feedback voltage Vfb corresponding to an output voltage Vdrv of an inverter conforms to the soft start voltage Vss. A logical control unit performs switching control of a voltage of a primary coil of a transformer on the basis of the PWM signal Vpwm from the pulse width modulator. The soft start circuit executes at least one striking operation in which the soft start voltage Vss is raised with time, lowered when being reached to a first voltage level VH, and raised again when being lowered to a second voltage level VL lower than the first voltage level VH.
摘要翻译：软启动电路产生在点亮EEFL的开始时刻随时间而变化的软启动电压Vss。脉冲宽度调制器产生其负载比被反馈控制的PWM信号Vpwm，使得与反相器的输出电压Vdrv相对应的反馈电压Vfb符合软启动电压Vss。逻辑控制单元根据来自脉宽调制器的PWM信号Vpwm，对变压器的初级线圈的电压进行切换控制。软启动电路执行软启动电压Vss随时间升高的至少一个打击操作，当达到第一电压电平VH时降低，并且当降低到低于第一电压的第二电压电平VL时，再次升高级VH。

3. 发明授权

US07778047B2 Inverter 有权
标题翻译：逆变器
公开(公告)号：US07778047B2
公开(公告)日：2010-08-17
申请号：US12407272
申请日：2009-03-19
申请人： Kenichi Fukumoto
发明人： Kenichi Fukumoto
IPC分类号： H02M3/335 , H02M3/24
CPC分类号： H02M3/335
摘要： Primary and secondary regions are electrically insulated from each other. The first and second pulse transformers are provided to the respective transistors in the switching circuit. Secondary windings of the first and second pulse transformers are connected to control terminals of the transistors. The control circuit supplies switching voltages to primary windings of the pulse transformers based on a feedback signal fed back through a feedback line. A primary winding of a transformer, the switching circuit, and the secondary windings are disposed on the primary region. A secondary winding of the transformer, the primary windings, the feedback line, and the control circuit are disposed on the secondary region.
摘要翻译：初级和次级区域彼此电绝缘。第一和第二脉冲变压器被提供给开关电路中的各个晶体管。第一和第二脉冲变压器的次级绕组连接到晶体管的控制端子。控制电路基于通过反馈线反馈的反馈信号向脉冲变压器的初级绕组提供开关电压。变压器的初级绕组，开关电路和次级绕组设置在主区域上。变压器的次级绕组，初级绕组，反馈线路和控制电路设置在次级区域上。

4. 发明申请

US20100039571A1 TRIANGULAR-WAVE GENERATING CIRCUIT SYNCHRONIZED WITH AN EXTERNAL CIRCUIT 有权
标题翻译：与外部电路同步的三波形发生电路
公开(公告)号：US20100039571A1
公开(公告)日：2010-02-18
申请号：US12440351
申请日：2007-09-03
申请人： Junichi Hagino , Kenichi Fukumoto
发明人： Junichi Hagino , Kenichi Fukumoto
IPC分类号： H04N5/74 , H03K4/06 , H05B41/00
CPC分类号： H03K4/502
摘要： A charge-discharge circuit charges or discharges a capacitor having a fixed electric potential at one end. A first comparator compares an output voltage of the capacitor with a first threshold voltage and outputs a first comparison signal in accordance with a comparison result. An edge detecting circuit detects an edge of a synchronization signal input from the outside and having a frequency of about ½ of a triangular-wave signal generated by the triangular-wave generating circuit, and outputs an edge detection signal that will be at a predetermined level for each of the detected edges. A charge-discharge controller receives the first comparison signal that is output from the first comparator and the edge detection signal that is output from the edge detecting circuit, and switches between a charge state and a discharge state of the charge-discharge circuit in accordance with a level transition of these signals. A voltage of the capacitor is output as a triangular-wave signal
摘要翻译：充放电电路在一端充电或放电具有固定电位的电容器。第一比较器将电容器的输出电压与第一阈值电压进行比较，并根据比较结果输出第一比较信号。边缘检测电路检测从外部输入的同步信号的边缘，并且具有由三角波产生电路产生的三角波信号的约1/2的频率，并输出将处于预定电平的边缘检测信号对于每个检测到的边缘。充放电控制器接收从第一比较器输出的第一比较信号和从边沿检测电路输出的边缘检测信号，并根据充电 - 放电控制器的充电状态和放电电路的放电状态进行切换这些信号的电平转换。电容器的电压被输出为三角波信号

5. 发明申请

US20080158916A1 DC-AC Converter and Controller IC Therefor 有权
标题翻译： DC-AC转换器和控制器IC
公开(公告)号：US20080158916A1
公开(公告)日：2008-07-03
申请号：US11970434
申请日：2008-01-07
申请人： Kenichi FUKUMOTO
发明人： Kenichi FUKUMOTO
IPC分类号： H02M3/335 , H02M7/521
CPC分类号： H02M1/36 , H02M3/33507 , H02M7/53871 , H02M2001/0025 , H05B41/2828 , H05B41/392 , H05B41/3927 , Y02B20/186
摘要： An inventive inverter has a semiconductor switch circuit connected to the primary winding of a transformer. The semiconductor switch circuit is respectively controlled by PWM to supply a constant current to the load connected to a secondary winding of the transformer. The inverter is capable of deliberately regulating its ac power output to the load and lowering the lower limit of the output power through control of the intermittent operation, in which an error signal for carrying out the PWM control is reduced to zero during each off-duty period. In addition, the error signal for the PWM control is slowly decreased or increased in each shift from an off-duty period to on-duty period, and vise versa, by charging or discharging the capacitor in a feedback circuit, thereby allowing slow start or slow end of the respective on-off operations for the constant current control through the PWM.
摘要翻译：本发明的逆变器具有连接到变压器的初级绕组的半导体开关电路。半导体开关电路分别由PWM控制，以向连接到变压器的次级绕组的负载提供恒定电流。逆变器能够故意调节其对负载的交流功率输出，并通过控制间歇运行来降低输出功率的下限，其中用于执行PWM控制的误差信号在每个断电期间降至零期。此外，通过在反馈电路中对电容器进行充电或放电，用于PWM控制的误差信号在从关闭周期到占空比周期的每个移位中缓慢降低或增加，从而允许缓慢启动或通过PWM的恒定电流控制的各个开 - 关操作的缓慢结束。

6. 发明申请

US20080037291A1 DC-AC Converter and Method of Supplying AC Power 有权
标题翻译： DC-AC转换器及交流电源供电方式
公开(公告)号：US20080037291A1
公开(公告)日：2008-02-14
申请号：US11837421
申请日：2007-08-10
申请人： Kenichi FUKUMOTO
发明人： Kenichi FUKUMOTO
IPC分类号： H02M7/5387 , H02M3/335
CPC分类号： H05B41/245 , H02M7/53803 , H02M7/53871 , H02M2001/008 , H05B41/2824 , H05B41/2828 , H05B41/3927 , Y02B20/186
摘要： A dc-ac converter capable of supplying a finely regulated ac drive voltage to a load is provided. For this purpose, the converter includes, in a primary winding of a transformer, a full-bridge or half-bridge type semiconductor switch circuit whose switches can be controlled, by pulse-width modulation. Transformer has a secondary winding for connection with a load. Based on PWM signals and by use of adequate switching logics for controlling multiple semiconductor switches, sophisticated control including zero-current switching and penetrating current prevention can be effected. Moreover, by means of regulated burst control of the ratio of on-duty period to off-duty period together with pulse-width modulation control, power supplied to the load can be regulated over a wide range beyond the limits of control obtained by the pulse-width modulation.
摘要翻译：提供了能够将精细调节的交流驱动电压提供给负载的dc-ac转换器。为此，转换器在变压器的初级绕组中包括通过脉冲宽度调制来控制开关的全桥或半桥式半导体开关电路。变压器具有用于与负载连接的次级绕组。基于PWM信号和通过使用适当的开关逻辑来控制多个半导体开关，可以实现包括零电流切换和穿透电流预防的复杂控制。此外，通过脉冲宽度调制控制的占空比与非占空比的比率的调节脉冲串控制，可以在超过由脉冲获得的控制极限的宽范围内调节提供给负载的功率宽带调制。

7. 发明申请

US20070182465A1 Method and System for Synchronizing Phase of Triangular Signal 有权
标题翻译：三角信号相位同步方法与系统
公开(公告)号：US20070182465A1
公开(公告)日：2007-08-09
申请号：US11736503
申请日：2007-04-17
申请人： Kenichi FUKUMOTO
发明人： Kenichi FUKUMOTO
IPC分类号： H03K4/06
CPC分类号： H03L7/00 , H03K4/06
摘要： A multiplicity of electronic devices is provided to generate triangular wave signals variable between an upper and lower limit voltages by charging or discharging capacitors. One of the triangular wave signals serves as a master triangular wave signal for controlling the phases of the remaining (or slave) triangular wave signals. A detection signal is generated every time the master triangular wave signal reaches predetermined threshold levels. In response to the detection signal, a capacitor associated with one slave triangular signal is promptly discharged to bring the slave triangular signal to the lower limit voltage, whereby the respective slave triangular wave signals are synchronized to be offset in phase relative to the master triangular wave signal by respective predetermined phase angles.
摘要翻译：提供多个电子装置以通过对电容器进行充电或放电来产生可在上限和下限电压之间变化的三角波信号。三角波信号中的一个用作用于控制剩余（或从））三角波信号的相位的主三角波信号。每当主三角波信号达到预定阈值电平时，就产生检测信号。响应于检测信号，与一个从三角形信号相关联的电容器迅速放电，使从三角形信号达到下限电压，从而相应的从三角波信号被相位相对于主三角波相位偏移信号通过相应的预定相位角。

8. 发明申请

US20060187690A1 Parallel operating system of DC-AC converters and controller IC therefor 失效
标题翻译： DC-AC转换器和控制器IC的并行操作系统
公开(公告)号：US20060187690A1
公开(公告)日：2006-08-24
申请号：US11203321
申请日：2005-08-12
申请人： Kenichi Fukumoto
发明人： Kenichi Fukumoto
IPC分类号： H02M7/48
CPC分类号： H02M1/36 , H02J7/0065 , H02M3/3376 , H02M2001/008 , H05B41/282 , H05B41/2828 , H05B41/3927 , Y02B20/186
摘要： A multiplicity of synchronized inverters for driving a multiplicity of loads such as CCFLs that require high ac voltages are arranged in close proximity of the respective loads and controlled in phase. A frequency determination capacitor and a frequency determination resistor are connected to one of the inverters to generate a triangular wave signal and a clock signal. The triangular wave signal and clock signal thus generated are supplied to other inverters to synchronize all the loads so that they can be controlled in phase. The resistance of the frequency determination resistor is set to a substantially small magnitude at the time of startup to increase the frequency of the triangular wave signal, thereby enabling quick startup of the loads.
摘要翻译：用于驱动多个负载的多个同步逆变器（例如需要高交流电压的CCFL）被布置成紧邻相应的负载并同相控制。频率确定电容器和频率确定电阻器连接到一个逆变器以产生三角波信号和时钟信号。这样产生的三角波信号和时钟信号被提供给其它逆变器以使所有负载同步，使得它们可以同相控制。频率确定电阻器的电阻在启动时被设置为基本上小的幅度以增加三角波信号的频率，从而能够快速启动负载。

9. 发明授权

US07095635B2 Dc/ac converter and controller IC 有权
标题翻译： Dc / AC转换器和控制器IC
公开(公告)号：US07095635B2
公开(公告)日：2006-08-22
申请号：US10501579
申请日：2003-08-29
申请人： Kenichi Fukumoto
发明人： Kenichi Fukumoto
IPC分类号： H02M3/335 , H02M7/521
CPC分类号： H02M1/36 , H02M3/33507 , H02M7/53871 , H02M2001/0025 , H05B41/2828 , H05B41/392 , H05B41/3927 , Y02B20/186
摘要： An inventive inverter has a semiconductor switch circuit connected to the primary winding of a transformer. The semiconductor switch circuit is respectively controlled by PWM to supply a constant current to the load connected to a secondary winding of the transformer. The inverter is capable of deliberately regulating its ac power output to the load and lowering the lower limit of the output power through control of the intermittent operation, in which an error signal for carrying out the PWM control is reduced to zero during each off-duty period. In addition, the error signal for the PWM control is slowly decreased or increased in each shift from an off-duty period to on-duty period, and vise versa, by charging or discharging the capacitor in a feedback circuit, thereby allowing slow start or slow end of the respective on-off operations for the constant current control through the PWM.
摘要翻译：本发明的逆变器具有连接到变压器的初级绕组的半导体开关电路。半导体开关电路分别由PWM控制，以向连接到变压器的次级绕组的负载提供恒定电流。逆变器能够故意调节其对负载的交流功率输出，并通过控制间歇运行来降低输出功率的下限，其中用于执行PWM控制的误差信号在每个断电期间降至零期。此外，通过在反馈电路中对电容器进行充电或放电，用于PWM控制的误差信号在从关闭周期到占空比周期的每个移位中缓慢降低或增加，从而允许缓慢启动或通过PWM的恒定电流控制的各个开 - 关操作的缓慢结束。

10. 发明授权

US07095632B2 Dc/ac conversion device and ac power supply method 有权
标题翻译： Dc / ac转换装置和交流电源方式
公开(公告)号：US07095632B2
公开(公告)日：2006-08-22
申请号：US10495965
申请日：2003-07-24
申请人： Kenichi Fukumoto
发明人： Kenichi Fukumoto
IPC分类号： H02M3/335 , H02M7/122 , H02M3/24 , H02M7/5387 , H02J1/00
CPC分类号： H05B41/245 , H02M7/53803 , H02M7/53871 , H02M2001/008 , H05B41/2824 , H05B41/2828 , H05B41/3927 , Y02B20/186
摘要： A dc-ac converter capable of supplying a finely regulated ac drive voltage to a load is provided. For this purpose, the converter includes, in a primary winding of a transformer, a full-bridge or half-bridge type semiconductor switch circuit whose switches can be controlled by pulse-width modulation. Transformer has a secondary winding for connection with a load. Based on PWM signals and by use of adequate switching logics for controlling multiple semiconductor switches, sophisticated control including zero-current switching and penetrating current prevention can be effected. Moreover, by means of regulated burst control of the ratio of on-duty period to off-duty period together with pulse-width modulation control, power supplied to the load can be regulated over a wide range beyond the limits of control obtained by the pulse-width modulation.
摘要翻译：提供了能够将精细调节的交流驱动电压提供给负载的dc-ac转换器。为此，转换器在变压器的初级绕组中包括全桥或半桥式半导体开关电路，其开关可通过脉冲宽度调制来控制。变压器具有用于与负载连接的次级绕组。基于PWM信号和通过使用适当的开关逻辑来控制多个半导体开关，可以实现包括零电流切换和穿透电流预防的复杂控制。此外，通过脉冲宽度调制控制的占空比与非占空比的比率的调节脉冲串控制，可以在超过由脉冲获得的控制极限的宽范围内调节提供给负载的功率宽带调制。

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