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    • 2. 发明公开
    • POWER-CONVERSION DEVICE AND METHOD FOR CONTROLLING SAME
    • VERFAHREN ZUR STEUERUNG DAVON LEISTUNGSUMWANDLUNGSVORRICHTUNG
    • EP2958223A4
    • 2016-10-19
    • EP13875164
    • 2013-02-14
    • TOSHIBA MITSUBISHI ELEC INC
    • OGINO HIROSHIANDO AKINOBUHOSOKAWA YASUHIKOOKUYAMA RYOTA
    • H02M1/14H02M1/00H02M5/45H02M5/451H02P1/52
    • H02M5/44H02M1/14H02M5/4505H02M5/451H02M2001/0016H02P1/52
    • A power conversion device includes a converter (1) which converts AC power supplied from an AC power source (e1) into DC power, a DC reactor (3), and an inverter (2) which converts the DC power provided from the converter (1) through the DC reactor (3) into AC power and supplies the AC power to a load. A control unit (20) controls the converter (1) according to a sum of a feedback control amount and a feedforward control amount, the feedback control amount being calculated based on a deviation between a current command value and the DC current flowing into the DC reactor (3), the feedforward control amount being set in accordance with a DC voltage provided from the converter (1) through the DC reactor (3). When an output frequency of the inverter (2) is in a first region, the control unit (20) reduces a control gain used to calculate the feedforward control amount, as compared to when the output frequency is in a second region having a frequency lower than that of the first region.
    • 电力转换装置包括将从交流电源(e1)提供的交流电力转换成直流电力的转换器(1),直流电抗器(3)和转换器(2),转换器(2) 1)通过直流电抗器(3)进入交流电源,并将交流电源提供给负载。 控制单元(20)根据反馈控制量和前馈控制量的和来控制转换器(1),反馈控制量是基于电流指令值与流入DC的直流电流之间的偏差来计算的 反应器(3),前馈控制量根据从转换器(1)通过直流电抗器(3)提供的直流电压来设定。 当逆变器(2)的输出频率处于第一区域时,与输出频率处于频率较低的第二区域相比,控制单元(20)减小用于计算前馈控制量的控制增益 比第一个地区。
    • 5. 发明公开
    • Power conversion system having a harmonic distortion limiter
    • Leistungswandlungssystem mit Begrenzer der harmonischen Verzerrung
    • EP2899868A3
    • 2015-08-26
    • EP15152082.2
    • 2015-01-22
    • Solidstate Controls, LLC
    • Proca, Amuliu, Bogdan
    • H02M7/48H02M1/12H02J3/01
    • H02M1/12H02M7/48H02M2001/0016H02M2001/0025
    • An electrical power conversion system having a harmonic distortion limiter. The power conversion system includes a power converter having a power input, a power output, a current measurement output signal, and a control signal input. The system further includes a controller having a voltage control subsystem arranged to measure a voltage present at the power output of the power converter and generate a corresponding current reference signal. A current control subsystem of the controller is arranged to receive the current reference signal and the current measurement output signal and generate a corresponding modulation command signal, the modulation command signal of the controller being electrically coupled to the control signal input of the power converter. The power converter is responsive to the modulation command signal to limit harmonic distortion at the power output of the power converter.
    • 具有谐波失真限制器的电力转换系统。 电力转换系统包括具有电力输入,功率输出,电流测量输出信号和控制信号输入的功率转换器。 该系统还包括具有电压控制子系统的控制器,该电压控制子系统被布置成测量存在于功率转换器的功率输出端的电压并产生相应的电流参考信号。 控制器的电流控制子系统被布置为接收当前参考信号和当前测量输出信号并产生相应的调制指令信号,该控制器的调制指令信号电耦合到功率转换器的控制信号输入端。 功率转换器响应于调制指令信号来限制功率转换器的功率输出处的谐波失真。
    • 8. 发明公开
    • A circuit device for preventing saturation of the transformer in a DC/AC converter having a feedback-regulated inverter
    • 一种用于防止具有反馈调节逆变器的DC / AC转换器中的变压器饱和的电路装置
    • EP0580192A3
    • 1994-10-19
    • EP93201437.6
    • 1993-05-19
    • FINMECCANICA S.p.A. AZIENDA ANSALDO
    • Carpita, Mauro
    • H02M7/48
    • H02M1/40H02M7/48H02M2001/0016H02M2001/0025H02M2007/4803
    • A DC/AC converter is disclosed which has an inverter (10) coupled to a load (13) via a transformer (11). A control signal generator (25) causes the inverter to switch according to a predetermined procedure, and a feedback loop (15-25) is responsive to at least one state quantity (v c ,i c ) of the circuit to act on the control signal generator (25) and modify the state quantities (v c ,i c ) so as to ensure a predetermined stable pattern for the output AC voltage (v c ). To prevent the transformer (11) from becoming saturated, a circuit device is provided which includes correcting means (30-32,33-35) effective to sense in the inverter (10) output voltage (u) an unbalance causing the appearance of a DC component at the primary of the transformer (11) and to apply a correction signal to the control signal generator (25) for so modifying the switch signals as to cancel the unbalance.
    • 公开了一种DC / AC转换器,其具有经由变压器(11)耦合到负载(13)的逆变器(10)。 控制信号发生器(25)根据预定过程使逆变器切换,并且反馈回路(15-25)响应于电路的至少一个状态量(vc,ic)作用于控制信号发生器 (25)并修改状态量(vc,ic),以确保输出AC电压(vc)的预定稳定模式。 为了防止变压器(11)变得饱和,提供了一种电路装置,其包括校正装置(30-32,33-35),该校正装置有效地在逆变器(10)中感测输出电压(u)不平衡, DC分量,并且将校正信号施加到控制信号发生器(25),以如此修改开关信号以消除不平衡。