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    • 54. 发明专利
    • Power conversion device and control method
    • 电力转换装置和控制方法
    • JP2011223832A
    • 2011-11-04
    • JP2010093163
    • 2010-04-14
    • Merstech Inc株式会社MERSTech
    • KATO KYOHEI
    • H02M7/48G05F1/70
    • PROBLEM TO BE SOLVED: To provide a power conversion device and a control method that stably supply electric power to a load using an MERS even if a voltage has a zero crossing owing to noise.SOLUTION: The power conversion device 10 comprises the MERS 100 and a control circuit 200, and the MERS 100 is connected between an inductive load LD and an AC power source VS. The control circuit 200 starts counting in response to the zero crossing of the output voltage of the AC power source VS, and performs ON/OFF control over self arc-extinguishing elements S1 to S4 of the MERS 100 according to the count value. Here, the control circuit 200 resets its count value each time the output voltage of the AC power source VS has a zero crossing in every cycle, and restarts counting.
    • 要解决的问题:提供一种功率转换装置和控制方法,即使电压由于噪声而具有零交叉,也可以使用MERS稳定地向负载提供电力。 电源转换装置10包括MERS100和控制电路200,并且MERS 100连接在感性负载LD和AC电源VS之间。 控制电路200响应于交流电源VS的输出电压的过零点开始计数,并且根据计数值对MERS 100的自灭弧元件S1至S4进行ON / OFF控制。 这里,每当AC电源VS的输出电压在每个周期中具有零交叉时,控制电路200重置其计数值,并且重新开始计数。 版权所有(C)2012,JPO&INPIT
    • 56. 发明专利
    • Power inverter, and power inverting method
    • 电力逆变器和功率转换方法
    • JP2011147300A
    • 2011-07-28
    • JP2010007508
    • 2010-01-15
    • Merstech Inc株式会社MERSTech
    • KITAHARA TADAYUKIFUKUDA SHIRO
    • H02M7/48H02P27/08H05B6/06
    • H02M3/158H02M2001/008H02M2003/1555H02P27/08H05B6/06
    • PROBLEM TO BE SOLVED: To provide a power inverter which can supply power in parallel to a plurality of loads from a single power supply, has small circuit scale and can adjust the supplied power. SOLUTION: A power inverter 1 is composed of a plurality of driving circuits 10i connected in parallel with a DC power supply 2. Each of the driving circuits 10i includes: a DC reactor Ldci connected to the DC power supply 2 in series; a magnetic energy regeneration switch Bi including a plurality of reverse conducting semiconductor switches SWUi, SWVi, SWYi, SWXi having DC input ends to which a series circuit of the DC power supply 2 and the DC reactor Ldci and a capacitor CMi are connected and AC output ends to which a load LDi is connected; and a control circuit 13i. The control circuit 13i turns on and off the reverse conducting semiconductor switches SWUi, SWVi with a duty ratio of 0.5, and adjusts the duty ratio of the reverse conducting semiconductor switches SWYi, SWXi to 0.5 or less. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供能够从单个电源并联供给多个负载的电力的电力逆变器,具有小的电路规模并且可以调节所供电的功率。 解决方案:电力逆变器1由与直流电源2并联连接的多个驱动电路10i组成。每个驱动电路10i包括:串联连接到直流电源2的直流电抗器Ldci; 具有直流电源2和直流电抗器Ldci的串联电路和电容器CMi的DC输入端的多个反向导通半导体开关SWUi,SWVi,SWYi,SWXi的磁能再生开关Bi连接,AC输出 连接负载LDi的端部; 和控制电路13i。 控制电路13i以占空比为0.5的方式导通和关断反向导通半导体开关SWUi,SWVi,并将反向导通半导体开关SWYi,SWXi的占空比调整至0.5以下。 版权所有(C)2011,JPO&INPIT
    • 57. 发明专利
    • Bidirectional power conversion circuit
    • 双向功率转换电路
    • JP2011147277A
    • 2011-07-28
    • JP2010006311
    • 2010-01-14
    • Merstech Inc株式会社MERSTech
    • KITAHARA TADAYUKIFUKUDA SHIRO
    • H02M3/155
    • PROBLEM TO BE SOLVED: To bidirectionally convert power between different DC voltages.
      SOLUTION: A series circuit of a low-voltage battery 11 and a first reactor L1 is connected to a first alternating current terminal AC1 of an MERS (magnetic energy recovery switch) 100. A capacitor CC is connected between DC terminals DCP and DCN of the MERS 100. A high-voltage battery 12 is connected to a second alternating current terminal AC2 of the MERS 100 via a second reactor L2, a fifth switch SW, and low-pass filters L3, C3. In charging the high-voltage battery 12 from the low-voltage battery 11, a control circuit 13 synchronously switches the second and third switches SW2, SW3, and in charging the low-voltage battery 11 from the high-voltage battery 12, the control circuit 13 always turns on the fifth switch SW and switches the first switch SW1.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:双向转换不同直流电压之间的功率。 解决方案:低压电池11和第一电抗器L1的串联电路连接到MERS(磁能回收开关)100的第一交流端子AC1。电容器CC连接在DC端子DCP和 MERS100的DCN。高电压电池12经由第二电抗器L2,第五开关SW和低通滤波器L3,C3连接到MERS 100的第二交流端子AC2。 在从低电压电池11对高压电池12充电时,控制电路13同步地切换第二和第三开关SW2,SW3,并从低电压电池12对低电压电池11充电,控制 电路13总是打开第五开关SW并切换第一开关SW1。 版权所有(C)2011,JPO&INPIT
    • 59. 发明专利
    • Power conversion device, and dc-power/ac-power conversion system
    • 电力转换装置和直流/交流电力转换系统
    • JP2010279209A
    • 2010-12-09
    • JP2009131637
    • 2009-05-29
    • Merstech Inc株式会社MERSTech
    • SHIMADA RYUICHI
    • H02M7/48
    • H02M7/53871H02M7/48H02M7/4807Y02B70/1441
    • PROBLEM TO BE SOLVED: To provide a structure which can control the voltage waveform and current waveform of an output AC power having a rapid response and which increases an extracted power in a power conversion circuit, using a magnetic energy regenerative switch. SOLUTION: A duration of the on-signal of a gate control signal for turning on/off a reverse conducting semiconductor switch constituting the magnetic energy regenerative switch is changed to be within a range equal to or more than the minimum time necessary for a voltage across a capacitor C to reach about 0 [V], due to the discharge of the capacitor C; and the on/off switching frequency of the reverse conducting semiconductor switch is changed within a range equal to or smaller than the resonance frequency determined with the capacitance of the capacitor and the inductance of the resonance frequency inductor 5 to control the voltage waveform and current waveform of the output AC power. Furthermore, a DC power source supplying power to the power converter is connected through a diode to increase an extracted power. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种可以使用磁能再生开关来控制具有快速响应的输出AC电力的电压波形和电流波形并且增加功率转换电路中的提取功率的结构。 解决方案:构成磁能再生开关的反向导通半导体开关的用于导通/关断的栅极控制信号的导通信号的持续时间被改变为等于或大于所需的最小时间的范围 由于电容器C的放电,电容器C两端的电压达到约0 [V] 并且反向导通半导体开关的导通/截止开关频率在等于或小于由电容器的电容和谐振频率电感器5的电感确定的谐振频率的范围内变化,以控制电压波形和电流波形 的输出交流电源。 此外,通过二极管连接向功率转换器供电的DC电源,以增加提取的功率。 版权所有(C)2011,JPO&INPIT