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    • 5. 发明授权
    • Method and apparatus for control of pulse width modulation (PWM)
converter
    • 用于控制脉宽调制(PWM)转换器的方法和装置
    • US5446646A
    • 1995-08-29
    • US851782
    • 1992-03-16
    • Masanori Miyazaki
    • Masanori Miyazaki
    • H02M7/219H02M7/48H02M7/757H02M7/797
    • H02M7/219
    • A control method for a PWM converter which is connected to an AC current source via a reactor, and performs the sending and receiving of power between the AC power source and a DC power source, includes a step of separating a supplied AC current into an effective current and a reactive current and performing PWM control and a step for control so that said reactive current is larger when there is conversion of DC power into AC power, than when there is conversion of an AC power into DC power. In addition, the control apparatus includes a detector element which detects at least two phases of a three-phase AC current as a current detection value, a phase detection element which detects a voltage phase of the three-phase current, a current separation element which uses the voltage phase to separate the detected current detection value into an effective current and a reactive current, an effective current control element which performs feedback control so that the separated effective current becomes a required value, a reactive current control element which performs feedback control so that the separated reactive current becomes a required value, and a reference calculation element which calculates a reference value so that an reference value of a reactive current becomes larger for when the effective current and power voltage are of opposite polarities, than for when they are of the same polarity.
    • 一种PWM转换器的控制方法,其经由电抗器连接到AC电流源,并且在AC电源和DC电源之间执行电力的发送和接收,包括将所提供的AC电流分离成有效的步骤 电流和无功电流,并且执行PWM控制和控制步骤,使得当将DC电力转换成AC电力时,与将AC电力转换为DC电力时相比,所述无功电流较大。 另外,控制装置具有检测作为电流检测值的三相交流电流的至少两相的检测元件,检测三相电流的电压相位的相位检测元件, 使用电压相位将检测到的电流检测值分离成有效电流和无功电流,执行反馈控制使得分离的有效电流成为所需值的有效电流控制元件,执行反馈控制的无功电流控制元件 分离的无功电流成为所需值,以及参考运算单元,其计算参考值,使得当有效电流和功率电压具有相反的极性时,无功电流的基准值变大, 相同的极性。
    • 9. 发明授权
    • Induction motor control system
    • 感应电动机控制系统
    • US5387855A
    • 1995-02-07
    • US42405
    • 1993-04-02
    • Masanori MiyazakiYasuhiro SuzukiTadashi Saito
    • Masanori MiyazakiYasuhiro SuzukiTadashi Saito
    • H02P21/00H02P5/40
    • H02P21/00
    • In order to carry out commercial synchronous exchange for disconnecting an induction motor from its driving power supply and connecting it to a variable frequency power supply, or commercial synchronous switching for disconnecting the induction motor from the variable frequency power supply and connecting it to a commercial power supply, without any accompanying adverse shock, an induction-motor vector control technique is utilized. A phase-locked loop (PLL) is formed to detect the difference in phase between the output voltage from the variable frequency power supply or the magnetic flux phase of the induction motor on the one hand, and the phase of the power supply voltage on the other, so that the difference in phase thus detected can be maintained at a predetermined value.
    • 为了进行用于将感应电动机与其驱动电源断开并将其连接到可变频率电源的商业同步交换,或用于将感应电动机与变频电源断开并将其连接到商业电力的商业同步开关 供应,没有任何伴随的不利冲击,使用感应电动机矢量控制技术。 形成锁相环(PLL)以一方面检测来自变频电源的输出电压或感应电动机的磁通相位之间的相位差,以及电源电压的相位 另一方面,使得如此检测的相位差可以保持在预定值。
    • 10. 发明授权
    • Induction motor control system
    • 感应电动机控制系统
    • US5212438A
    • 1993-05-18
    • US873711
    • 1992-04-22
    • Masanori MiyazakiYasuhiro SuzukiTadashi Saito
    • Masanori MiyazakiYasuhiro SuzukiTadashi Saito
    • H02P21/00
    • H02P21/00
    • In order to carry out commercial synchronous exchange for disconnecting an induction motor from its driving power supply and connecting it to a variable frequency power supply or commercial synchronous switching for disconnecting the induction motor from the variable frequency power supply and connecting it to a commercial power supply without any accompanying adverse shock, an induction-motor vector control technique is utilized and furthermore, a phase-locked loop (PLL) is formed to detect the difference in phase between the phase of the output voltage from the variable frequency power supply or the magnetic flux phase of the induction motor on the one hand, and the phase of the voltage of the power supply on the other, so that the difference in phase thus detected can be maintained at a predetermined value.
    • 为了进行商业同步交换,以将感应电动机与其驱动电源断开并将其连接到变频电源或商用同步开关,用于将感应电动机与变频电源断开并将其连接到商用电源 没有任何伴随的不利冲击,利用感应电动机矢量控制技术,此外,形成锁相环(PLL)以检测来自可变频率电源或磁场的输出电压的相位之间的相位差 一方面是感应电动机的通量相位,另一方面是电源电压的相位,使得这样检测的相位差可以保持在预定值。