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    • 1. 发明公开
    • SYNCHRONOUS MACHINE STARTING DEVICE
    • 花样机启动装置
    • EP2337212A4
    • 2014-12-24
    • EP08877141
    • 2008-10-01
    • TOSHIBA MITSUBISHI ELEC INC
    • TAMAI SHINZOFUJII YOSUKEANDO AKINOBUHOSOKAWA YASUHIKO
    • H02P1/46H02P6/18H02P6/20
    • H02P6/185H02P1/46H02P6/182H02P6/21
    • A synchronous machine starting device includes a power conversion unit for converting supplied power into AC power and supplying the AC power to an armature of a synchronous machine (4), an AC voltage detection unit for detecting AC voltage supplied to the armature of the synchronous machine, a rotor position detection unit (11) for detecting a rotor position of the synchronous machine, based on the detected AC voltage, and a power conversion control unit for controlling the power conversion portion, based on the detected rotor position. The rotor position detection portion (11) includes a level monitoring unit (21) outputting a first position signal indicating a timing at which a level of AC voltage supplied to the armature of the synchronous machine reaches a prescribed value, based on the detected AC voltage, a feedback operation unit (23) for calculating an error of an estimated phase based on the estimated phase indicating the rotor position and the detected AC voltage, calculating the estimated phase based on the calculated phase error, and outputting a second position signal indicating the calculated estimated phase, and a selector circuit (SEL) receiving the first position signal or a position signal obtained based on the first position signal, and the second position signal, selecting one of the received two position signals, and outputting the selected signal to the power conversion control unit (19) as a signal indicating the rotor position of the synchronous machine.
    • 3. 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。