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    • 1. 发明授权
    • Power conversion apparatus, power conditioner, and power generation system
    • 电力转换装置,功率调节器和发电系统
    • US08184462B2
    • 2012-05-22
    • US12710979
    • 2010-02-23
    • Masao MabuchiYasuhiro TsubotaTakao MizokamiHideaki Fujita
    • Masao MabuchiYasuhiro TsubotaTakao MizokamiHideaki Fujita
    • H02M7/00H02M7/02
    • H02M7/49H02J3/383Y02E10/563
    • A first chopper circuit generates a first sequence of square wave voltages having a voltage level that changes to a positive side by chopping a direct current voltage at a system frequency. A second chopper circuit generates a second sequence of square wave voltages having a voltage level that changes to a negative side by chopping a direct current voltage at a frequency twice as high as the system frequency. The second chopper circuit further generates a third sequence of square wave voltages having a voltage level that changes to the positive and negative side in turns in the manner of sinusoidal wave by summing the first sequence of square wave voltages and the second sequence of square wave voltages. A third chopper circuit chops the third sequence of square wave voltages at a frequency determined by a timing that depends on if a voltage difference thereof to a sinusoidal wave voltage results in a positive value or a negative value and outputting the chopped third sequence of square wave voltages as a charge/discharge output. The third chopper circuit PWM-controls the charge/discharge output at a PWM frequency so that the difference is corrected to thereby generate a sinusoidal wave voltage that continuously changes to the positive and negative sides.
    • 第一斩波电路通过在系统频率处切断直流电压来产生具有变化到正侧的电压电平的方波电压的第一序列。 第二斩波电路通过以系统频率的两倍的频率斩波直流电压来产生具有变化到负侧的电压电平的第二方波电压序列。 第二斩波电路进一步产生第三顺序的方波电压,其具有通过将第一顺序方波电压和第二次方波电压序列相加而以正弦波的方式依次变化到正侧和负侧的电压电平 。 第三斩波电路以由取决于其与正弦波电压的电压差是否为正值或正负值的定时确定的频率斩波第三次方波电压序列,并输出斩波的第三个方波序列 电压作为充​​放电输出。 第三斩波电路PWM控制PWM频率的充电/放电输出,使得差被校正,从而产生连续改变到正侧和负侧的正弦波电压。
    • 2. 发明授权
    • Power conditioner and solar photovoltaic power generation system
    • 功率调节器和太阳能光伏发电系统
    • US08184461B2
    • 2012-05-22
    • US12710822
    • 2010-02-23
    • Masao MabuchiYasuhiro TsubotaTakao MizokamiHideaki Fujita
    • Masao MabuchiYasuhiro TsubotaTakao MizokamiHideaki Fujita
    • H02M7/00H02M7/02
    • H02M7/49H02J3/383Y02E10/563
    • A first circuit generates a first sequence of square wave voltages having a voltage level that changes to a positive side relative to a first reference potential, which is a potential on a negative-electrode side of a direct current power source, from a direct current voltage. A second circuit generates a second sequence of square wave voltages having a voltage level lower than the voltage level of the first sequence of square wave voltages on the positive side that changes to a negative side relative to a second reference potential. The second chopper circuit further generates a third sequence of square wave voltages having a voltage level that changes to the positive and negative side in turns in the manner of sinusoidal wave relative to the first reference potential by summing the first sequence of square wave voltages and the second sequence of square wave voltages. A third circuit outputs the third sequence of square wave voltages as a charge/discharge output. The third circuit further PWM-controls the charge/discharge output so that a difference of the third sequence of square wave voltages to a sinusoidal wave voltage is corrected and thereby generates a sinusoidal wave voltage that continuously changes to the positive and negative sides relative to the first reference potential from the third sequence of square wave voltages and the PWM-controlled output, and outputs the generated sinusoidal wave voltage to a load.
    • 第一电路产生第一顺序的方波电压,其具有相对于作为直流电源的负极侧上的电位的第一参考电位从正直电压变化到正侧的电压电平 。 第二电路产生具有低于相对于第二参考电位变为负侧的正侧上的第一方波电压序列的电压电平的电压电平的第二序列方波电压。 第二斩波电路进一步产生第三序列的方波电压,其具有通过将第一方波电压序列相加而以相对于第一参考电位的正弦波的方式依次变化到正负侧的电压电平和 方波电压的第二序列。 第三个电路输出第三个方波电压序列作为充电/放电输出。 第三电路进一步PWM控制充电/放电输出,使得方波电压的第三序列与正弦波电压的差异被校正,从而产生正弦波电压,其相对于正弦波电压连续地变化到正侧和负侧 从第三方波电压序列和PWM控制输出的第一参考电位,并将产生的正弦波电压输出到负载。
    • 3. 发明申请
    • POWER CONVERSION APPARATUS, POWER CONDITIONER, AND POWER GENERATION SYSTEM
    • 功率转换装置,功率调节器和发电系统
    • US20100232192A1
    • 2010-09-16
    • US12710979
    • 2010-02-23
    • Masao MabuchiYasuhiro TsubotaTakao MizokamiHideaki Fujita
    • Masao MabuchiYasuhiro TsubotaTakao MizokamiHideaki Fujita
    • H02M7/155
    • H02M7/49H02J3/383Y02E10/563
    • A first chopper circuit generates a first sequence of square wave voltages having a voltage level that changes to a positive side by chopping a direct current voltage at a system frequency. A second chopper circuit generates a second sequence of square wave voltages having a voltage level that changes to a negative side by chopping a direct current voltage at a frequency twice as high as the system frequency. The second chopper circuit further generates a third sequence of square wave voltages having a voltage level that changes to the positive and negative side in turns in the manner of sinusoidal wave by summing the first sequence of square wave voltages and the second sequence of square wave voltages. A third chopper circuit chops the third sequence of square wave voltages at a frequency determined by a timing that depends on if a voltage difference thereof to a sinusoidal wave voltage results in a positive value or a negative value and outputting the chopped third sequence of square wave voltages as a charge/discharge output. The third chopper circuit PWM-controls the charge/discharge output at a PWM frequency so that the difference is corrected to thereby generate a sinusoidal wave voltage that continuously changes to the positive and negative sides.
    • 第一斩波电路通过在系统频率处切断直流电压来产生具有变化到正侧的电压电平的方波电压的第一序列。 第二斩波电路通过以系统频率的两倍的频率斩波直流电压来产生具有变化到负侧的电压电平的第二方波电压序列。 第二斩波电路进一步产生第三顺序的方波电压,其具有通过将第一顺序方波电压和第二次方波电压序列相加而以正弦波的方式依次变化到正侧和负侧的电压电平 。 第三斩波电路以由取决于其与正弦波电压的电压差是否为正值或正负值的定时确定的频率斩波第三次方波电压序列,并输出斩波的第三个方波序列 电压作为充​​放电输出。 第三斩波电路PWM控制PWM频率的充电/放电输出,使得差被校正,从而产生连续改变到正侧和负侧的正弦波电压。
    • 4. 发明申请
    • POWER CONDITIONER AND SOLAR PHOTOVOLTAIC POWER GENERATION SYSTEM
    • 电力调节器和太阳能光伏发电系统
    • US20100232191A1
    • 2010-09-16
    • US12710822
    • 2010-02-23
    • Masao MabuchiYasuhiro TsubotaTakao MizokamiHideaki Fujita
    • Masao MabuchiYasuhiro TsubotaTakao MizokamiHideaki Fujita
    • H02M7/155
    • H02M7/49H02J3/383Y02E10/563
    • A first circuit generates a first sequence of square wave voltages having a voltage level that changes to a positive side relative to a first reference potential, which is a potential on a negative-electrode side of a direct current power source, from a direct current voltage. A second circuit generates a second sequence of square wave voltages having a voltage level lower than the voltage level of the first sequence of square wave voltages on the positive side that changes to a negative side relative to a second reference potential. The second chopper circuit further generates a third sequence of square wave voltages having a voltage level that changes to the positive and negative side in turns in the manner of sinusoidal wave relative to the first reference potential by summing the first sequence of square wave voltages and the second sequence of square wave voltages. A third circuit outputs the third sequence of square wave voltages as a charge/discharge output. The third circuit further PWM-controls the charge/discharge output so that a difference of the third sequence of square wave voltages to a sinusoidal wave voltage is corrected and thereby generates a sinusoidal wave voltage that continuously changes to the positive and negative sides relative to the first reference potential from the third sequence of square wave voltages and the PWM-controlled output, and outputs the generated sinusoidal wave voltage to a load.
    • 第一电路产生第一顺序的方波电压,其具有相对于作为直流电源的负极侧上的电位的第一参考电位从正直电压变化到正侧的电压电平 。 第二电路产生具有低于相对于第二参考电位变为负侧的正侧上的第一方波电压序列的电压电平的电压电平的第二序列方波电压。 第二斩波电路进一步产生第三序列的方波电压,其具有通过将第一方波电压序列相加而以相对于第一参考电位的正弦波的方式依次变化到正负侧的电压电平和 方波电压的第二序列。 第三个电路输出第三个方波电压序列作为充电/放电输出。 第三电路进一步PWM控制充电/放电输出,使得方波电压的第三序列与正弦波电压的差异被校正,从而产生正弦波电压,其相对于正弦波电压连续地变化到正侧和负侧 从第三方波电压序列和PWM控制输出的第一参考电位,并将产生的正弦波电压输出到负载。
    • 5. 发明授权
    • Direct current detection circuit
    • 直流检测电路
    • US07176673B2
    • 2007-02-13
    • US10901249
    • 2004-07-27
    • Yasuhiro TsubotaNobuyuki ToyouraMasao Mabuchi
    • Yasuhiro TsubotaNobuyuki ToyouraMasao Mabuchi
    • G01R15/18
    • G01R19/20H02H3/33
    • A direct current detection circuit has a zero-phase current transformer with source lines inserted therethrough for detecting current differences among them and generates a comparison voltage value based on a divided voltage value obtained between the zero-phase current transformer and a voltage divider resistor according to a change in the self-impedance of the zero-phase current transformer. An offset current is passed through the zero-phase current transformer to make it possible to detect on the basis of the comparison voltage value a direct current value in a range which is otherwise difficult to detect accurately on the basis of the comparison voltage value because of influence of hysteresis characteristic of the zero-phase current transformer. A control circuit detects a present direct current value based on the comparison voltage value and the value of the offset current.
    • 直流检测电路具有零相电流互感器,其源极线插入其中,用于检测它们之间的电流差异,并根据在零相电流互感器和分压电阻器之间获得的分压值产生比较电压值,根据 零相电流互感器的自阻变化。 偏移电流通过零相电流互感器,使得有可能在比较电压值的基础上检测在另外难以准确地基于比较电压值精确检测的范围内的直流电流值,这是由于 零相电流互感器滞后特性的影响。 控制电路基于比较电压值和偏移电流的值来检测当前的直流电流值。
    • 6. 发明申请
    • Direct current detection circuit
    • 直流检测电路
    • US20050030005A1
    • 2005-02-10
    • US10901249
    • 2004-07-27
    • Yasuhiro TsubotaNobuyuki ToyouraMasao Mabuchi
    • Yasuhiro TsubotaNobuyuki ToyouraMasao Mabuchi
    • G01R31/02G01R15/18G01R19/20H01H83/02H02H3/16H02H3/347H02H3/44G01R1/00
    • G01R19/20H02H3/33
    • A direct current detection circuit has a zero-phase current transformer with source lines inserted therethrough for detecting current differences among them and generates a comparison voltage value based on a divided voltage value obtained between the zero-phase current transformer and a voltage divider resistor according to a change in the self-impedance of the zero-phase current transformer. An offset current is passed through the zero-phase current transformer to make it possible to detect on the basis of the comparison voltage value a direct current value in a range which is otherwise difficult to detect accurately on the basis of the comparison voltage value because of influence of hysteresis characteristic of the zero-phase current transformer. A control circuit detects a present direct current value based on the comparison voltage value and the value of the offset current.
    • 直流检测电路具有零相电流互感器,其源极线插入其中,用于检测它们之间的电流差异,并根据在零相电流互感器和分压电阻器之间获得的分压值产生比较电压值,根据 零相电流互感器的自阻变化。 偏移电流通过零相电流互感器,使得有可能在比较电压值的基础上检测在另外难以准确地基于比较电压值精确检测的范围内的直流电流值,这是由于 零相电流互感器滞后特性的影响。 控制电路基于比较电压值和偏移电流的值来检测当前的直流电流值。