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    • 2. 发明专利
    • Power conversion device
    • 电源转换器件
    • JP2014128126A
    • 2014-07-07
    • JP2012283471
    • 2012-12-26
    • Nippon Soken Inc株式会社日本自動車部品総合研究所Denso Corp株式会社デンソー
    • IYASU SEIJIANDO SHINJIOBAYASHI KAZUYOSHI
    • H02M7/12
    • PROBLEM TO BE SOLVED: To provide a power conversion device capable of suppressing an inrush current which is generated just after the start of switching a power conversion circuit.SOLUTION: A power conversion device 1 comprises a rectifier circuit 10 configured by bridge-connecting IGBTs 100a to 100d to which a diode is connected in anti-parallel. In an AC terminal of the rectifier 10, a capacitor 120b is connected in parallel and in a DC terminal of the rectifier circuit 10, a capacitor 130b is connected in parallel, respectively. A control circuit turns on the IGBTs 100a, 100d or the IGBTs 100b, 100c just before switching the IGBTs 100a, 100d and the IGBTs 100b, 100c in a complementary manner synchronously to the timing of switching a polarity of a voltage of an AC power source, and in the timing when the voltage of the AC power source is settled within a predetermined range including a peak value. Thus, switching can be started in the state where a voltage difference between the DC terminal and the AC terminal of the rectifier circuit 10 is reduced. Therefore, an inrush current which is generated just after the start of switching, can be suppressed.
    • 要解决的问题:提供一种能够抑制刚开始切换电源转换电路之后产生的浪涌电流的电力转换装置。解决方案:电力转换装置1包括整流电路10,该整流电路10通过将IGBT 100a 以二极管反向并联连接到100d。 在整流器10的交流端子中,电容器120b并联连接在整流电路10的直流端子中,电容器130b分别并联连接。 在与交流电源的电压的极性切换的定时同步的情况下,IGBT 100a,100d或IGBT100b,100c之间的互换开启IGBT 100a,100d和IGBT100b,100c之前,控制电路导通IGBT 100a,100d或IGBT100b,100c 并且在AC电源的电压稳定在包括峰值的预定范围内的时刻。 因此,可以在整流电路10的直流端子和交流端子之间的电压差减小的状态下开始切换。 因此,可以抑制刚开始切换后产生的浪涌电流。
    • 3. 发明专利
    • Switching device
    • 切换设备
    • JP2013038916A
    • 2013-02-21
    • JP2011173035
    • 2011-08-08
    • Nippon Soken Inc株式会社日本自動車部品総合研究所Denso Corp株式会社デンソー
    • OOKA SHINJIIYASU SEIJIYOSHIKAWA SATORUYAMASHITA TAKESHI
    • H02M3/155H02M3/28H02M7/12H02M7/48
    • PROBLEM TO BE SOLVED: To provide a switching device which can stabilize the control target to satisfy specifications on harmonic current or electromagnetic noise even when a switching frequency is spectrum spread.SOLUTION: An input current sine wave control device 50A (switching device) includes: pulse cycle selection means 55a which selects two or more kinds of pulse cycles from multiple kinds of pulse cycles; control cycle setting means 55b which sets a sum total of pulse cycles selected by the pulse cycle selection means 55a as a control cycle; and operation signal transmission means 55c which transmits an operation signal Sp after changing an on/off duty cycle every control cycle which was set by the control cycle setting means 55b. According to this configuration, the length of the control cycle is maintained at constant length, and also the duty cycle is maintained within the control cycle. Therefore, the control target is stabilized, making it possible to reduce harmonic current or electromagnetic noise.
    • 要解决的问题:即使当开关频率是频谱扩展时,提供一种可以使控制目标稳定以满足谐波电流或电磁噪声的规格的开关装置。 输入电流正弦波控制装置50A(开关装置)包括:脉冲周期选择装置55a,其从多种脉冲周期中选择两种以上的脉冲周期; 控制周期设定单元55b,将由脉冲周期选择单元55a选择的脉冲周期的总和设定为控制周期; 以及在由控制周期设定装置55b设定的每个控制周期改变开/关占空比之后发送操作信号Sp的操作信号发送装置55c。 根据该结构,将控制周期的长度保持为恒定长度,并且将占空比保持在控制周期内。 因此,控制目标稳定,可以减少谐波电流或电磁噪声。 版权所有(C)2013,JPO&INPIT
    • 4. 发明专利
    • Power conversion apparatus
    • 功率转换装置
    • JP2012257370A
    • 2012-12-27
    • JP2011128376
    • 2011-06-08
    • Nippon Soken Inc株式会社日本自動車部品総合研究所Denso Corp株式会社デンソー
    • YOSHIKAWA SATORUIYASU SEIJIANDO SHINJIOOKA SHINJIISHII ATSUSHI
    • H02M3/155
    • H02M1/12H02M1/4225Y02B70/126
    • PROBLEM TO BE SOLVED: To provide a power conversion apparatus capable of suppressing a level of switching noise over a wide frequency domain.SOLUTION: A diffusion pattern of switching frequency is configured by composing a main diffusion pattern specifying two frequencies f1 and f2 with respect to time and a sub diffusion pattern, in which intervals of frequencies adjacent to each other are smaller than those of main diffusion pattern, specifying three frequencies f3, f4 and f5 with respect to time. Switching frequencies can be diffused as conventionally by the main diffusion pattern. This can suppress a level of switching noise in a low frequency domain. Furthermore, peaks of switching noise at a frequency of switching frequency in a harmonic wave category can be sufficiently diffused by the sub diffusion pattern. This can suppress a level of switching noise in a high frequency domain. Thus, the level of switching noise can be suppressed over a wide frequency domain.
    • 解决的问题:提供能够抑制宽频域的开关噪声的电平的电力转换装置。 解决方案:通过组合指定相对于时间的两个频率f1和f2的主扩散图案和相邻的频率间隔小于主扩散模式的子扩散模式来配置开关频率的扩散图案 扩散图案,相对于时间指定三个频率f3,f4和f5。 开关频率可以如常规地通过主扩散图案扩散。 这可以抑制低频域中的开关噪声水平。 此外,谐波类别中的开关频率的开关噪声的峰值可以被子扩散图案充分地扩散。 这可以抑制高频域的开关噪声水平。 因此,可以在宽频域上抑制开关噪声的电平。 版权所有(C)2013,JPO&INPIT
    • 6. 发明专利
    • Power conversion device
    • 电源转换器件
    • JP2013247836A
    • 2013-12-09
    • JP2012122190
    • 2012-05-29
    • Nippon Soken Inc株式会社日本自動車部品総合研究所Denso Corp株式会社デンソー
    • YOSHIKAWA SATORUANDO SHINJIIYASU SEIJIISHII ATSUSHI
    • H02J7/00H02M3/28
    • PROBLEM TO BE SOLVED: To provide a power conversion device whose output current is less likely to oscillate even when the effective value of an input voltage fluctuates.SOLUTION: The power conversion device comprises an AC-DC converter 2, a smoothing capacitor 3, a DC-DC converter 4, input voltage measurement means 12, output current measurement means 13, output voltage measurement means 14, and a feedback control unit 5. The feedback control unit 5 exerts feedback control so that output power Pwhich is the product of an output current Iand an output voltage Vapproaches a target value P. Furthermore, when the effective value of an input voltage Vmeasured by the input voltage measurement means 12 has changed, the feedback control unit 5 changes the target value Pfor the output power Pso that a voltage Vof the smoothing capacitor 3 reaches a designated level.
    • 要解决的问题:即使当输入电压的有效值波动时,其输出电流也不太可能振荡的电力转换装置。解决方案:电力转换装置包括AC-DC转换器2,平滑电容器3, DC-DC转换器4,输入电压测量装置12,输出电流测量装置13,输出电压测量装置14和反馈控制单元5.反馈控制单元5进行反馈控制,使得输出功率P是输出的乘积 电流I和输出电压V达到目标值P.此外,当输入电压测量装置12测量的输入电压V的有效值已经改变时,反馈控制单元5将输出功率Pso的目标值P改变为电压Vof 平滑电容器3达到指定电平。
    • 7. 发明专利
    • Power conversion device
    • 电源转换器件
    • JP2013172612A
    • 2013-09-02
    • JP2012036545
    • 2012-02-22
    • Nippon Soken Inc株式会社日本自動車部品総合研究所Denso Corp株式会社デンソー
    • IYASU SEIJIANDO SHINJIONIMARU SADAHISAOBAYASHI KAZUYOSHI
    • H02M3/155H02M7/12
    • PROBLEM TO BE SOLVED: To suppress distortion of an AC current at the time of reactive power control.SOLUTION: There is a case where it is required to supply reactive power at a reverse power flow that supplies electric power to an AC power supply, in other words, a system. When doing so, immediately after zero cross of an AC voltage vac, a feedforward control amount FF is given temporarily. The feedforward control amount FF is larger than a feedback control amount FB calculated at the same time. In response to the feedforward control amount FF, a reactor current iL sharply increases immediately after the zero cross. Then, in response to the feedback control amount FB, the reactor current iL is controlled smoothly. By means of the feedforward control amount FF, a control delay by the feedback control amount FB is compensated for. As a result, an Ac current iac changes smoothly, so distortion of the AC current iac is suppressed.
    • 要解决的问题:为了抑制无功功率控制时的交流电流的变形。解决方案:需要以向AC电源供电的反向电力供给无功功率的情况下, 换句话说,一个系统。 当这样做时,紧接着交流电压vac的零交叉之后,暂时给出前馈控制量FF。 前馈控制量FF大于同时计算的反馈控制量FB。 响应于前馈控制量FF,电抗器电流iL在零交叉之后立即急剧增加。 然后,响应于反馈控制量FB,平稳地控制电抗器电流iL。 通过前馈控制量FF,补偿反馈控制量FB的控制延迟。 结果,交流电流iac变化平滑,因此抑制了交流电流iac的失真。
    • 8. 发明专利
    • Power converter, and controller for motor using the same
    • 电动转换器和使用该电动机的电动机的控制器
    • JP2012217294A
    • 2012-11-08
    • JP2011081919
    • 2011-04-01
    • Nippon Soken IncDenso Corp株式会社デンソー株式会社日本自動車部品総合研究所
    • IYASU SEIJIANDO SHINJITAKI HIROSHIOBAYASHI KAZUYOSHI
    • H02M7/12H02M3/155H02P27/06
    • Y02P80/116
    • PROBLEM TO BE SOLVED: To enhance efficiency of power conversion in a power converter 1 which converts AC power into DC power.SOLUTION: When performing charge control, a controller 50 turns two switching elements, out of switching elements Q1p-Q4p and Q5, on and performs switching control of one switching element. Consequently, ON voltage is generated as loss in three elements when the controller 50 performs charge control. In a power converter of prior art, four ON voltages are generated as loss when a diode bridge circuit performs full-wave rectification of the output voltage of an AC load. Consequently, the loss generated as the ON voltage can be reduced in a power converter 1 which converts AC power of an AC load 2 into DC power, and thereby efficiency of power conversion can be enhanced.
    • 要解决的问题:为了提高将AC电力转换为DC电力的电力转换器1的电力转换效率。 解决方案:当执行充电控制时,控制器50将开关元件Q1p-Q4p和Q5中的两个开关元件接通,并执行一个开关元件的开关控制。 因此,当控制器50进行充电控制时,导通电压被产生为三个元件的损耗。 在现有技术的电力转换器中,当二极管电桥电路对AC负载的输出电压进行全波整流时,产生四个导通电压作为损耗。 因此,在将AC负载2的交流电力转换为直流电力的电力转换器1中,能够降低作为导通电压的损耗,能够提高电力转换效率。 版权所有(C)2013,JPO&INPIT
    • 10. 发明专利
    • Power factor improvement device
    • 功率因数改进器
    • JP2012222911A
    • 2012-11-12
    • JP2011084834
    • 2011-04-06
    • Nippon Soken IncDenso Corp株式会社デンソー株式会社日本自動車部品総合研究所
    • YOSHIKAWA SATORUIYASU SEIJIANDO SHINJIISHII ATSUSHI
    • H02M7/12H02M3/155
    • PROBLEM TO BE SOLVED: To provide a power factor improvement device in which distortion of an input current waveform can be suppressed easily while reducing the manufacturing cost.SOLUTION: The power factor improvement device 1 comprises a rectifier circuit 10, a reactor 11, a switching element 12, a smoothing capacitor 13, a current detection means 14, a control unit 2, and a zero-cross detection circuit 3. The control unit 2 includes a reference current calculation means and a phase adjustment means. The reference current calculation means calculates a reference current waveform becoming a target of a reactor current Ibased on a zero-cross point detected. The reference current waveform has a current waveform consisting of the absolute value of a sine wave in which the frequency is equal to that of an input voltage waveform, and the amplitude corresponds to the electric energy supplied from an AC power supply 15. A phase adjustment means 21 advances or delays a reference current waveform 50 according to the phase difference φ between the reactor current Iand the reference current waveform 50 so as to reduce the phase difference.
    • 解决的问题:提供一种在降低制造成本的同时可以容易地抑制输入电流波形的失真的功率因数提高装置。 解决方案:功率因数提高装置1包括整流电路10,电抗器11,开关元件12,平滑电容器13,电流检测装置14,控制单元2和过零检测电路3 控制单元2包括基准电流计算单元和相位调整单元。 参考电流计算装置基于检测到的零交叉点计算成为电抗器电流I L 的目标的参考电流波形。 参考电流波形具有由频率等于输入电压波形的频率的正弦波的绝对值组成的电流波形,并且振幅对应于从AC电源15提供的电能。相位调整 装置21根据电抗器电流I L 与参考电流波形50之间的相位差φ推进或延迟参考电流波形50,以便减小相位差。 版权所有(C)2013,JPO&INPIT