公开(公告)号：JP2010217943A

公开(公告)日：2010-09-30

申请号：JP2009060461

申请日：2009-03-13

Applicant: Merstech Inc ,  株式会社MERSTech

Inventor： SHIMADA RYUICHI ,  ISOBE TAKANORI ,  MICHISHIRO TAKUMA ,  AZECHI KEITA

IPC: G05F1/455 ,  H05B41/392

Abstract: PROBLEM TO BE SOLVED: To provide an AC voltage control unit using one switch MERS for solving various problems in controlling an inductive load having current polarity. SOLUTION: The AC voltage control unit includes: an AC switch circuit; a capacitor connected to the AC switch in parallel for regenerating and accumulating magnetic energy of currents flowing through the inductive load when the currents of the AC switch circuit are interrupted; a control circuit for performing ON/OFF control by giving a control signal to the AC switch circuit; and a capacitor voltage detection circuit for detecting a point of time when both end voltages of the capacitor are turned to be almost zero, and for transmitting a command signal to turn on the AC switch circuit to the control circuit. Capacitance of the capacitor is turned to be a capacitor in a resonant state with the inductance component of an inductive load with frequency which is equal to or more than the frequency of the AC power source. The control circuit turns on the AC switch circuit by transmitting an ON control signal to the AC switch circuit in reception timing of the command signal, and then, transmits the control signal to turn off the AC switch circuit after the lapse of the preliminarily set ON time (time within the semi-cycle of the cycle of the AC power source). COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种交流电压控制单元，其使用一个开关MERS来解决控制具有电流极性的电感负载的各种问题。 交流电压控制单元包括：交流开关电路; 当AC开关电路的电流被中断时，并联连接到AC开关的电容器用于再生和累积流过感性负载的电流的磁能; 用于通过向所述AC开关电路提供控制信号来执行ON / OFF控制的控制电路; 以及电容器电压检测电路，用于检测电容器的两端电压几乎为零的时间点，并且用于发送命令信号以将AC开关电路接通到控制电路。 电容器的电容被变成具有感应负载的电感分量的谐振状态的电容器，其频率等于或大于AC电源的频率。 在命令信号的接收定时，控制电路通过向AC开关电路发送ON控制信号来接通交流开关电路，然后在经过预先设定的ON之后发送控制信号以关闭交流开关电路 时间（交流电源周期的半周期内的时间）。 版权所有（C）2010，JPO＆INPIT