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公开(公告)号：US20200177111A1
公开(公告)日：2020-06-04
申请号：US16611012
申请日：2017-06-21
Inventor： Yasuaki MATSUMOTO , Hiroshi OGINO , Hironori KAWAGUCHI , Akinobu ANDO
Abstract: A thyristor starter accelerates a synchronous machine from a stop state to a predetermined rotation speed by sequentially performing a first mode of performing commutation of an inverter by intermittently setting DC output current to zero and a second mode of performing commutation of the inverter by induced voltage of the synchronous machine. A second controller controls the firing phase of a thyristor in a converter such that DC output current of the converter matches a current command value, based on a detection signal of a position detector. In the first mode, the current command value is set such that the current value is higher as the rotation speed of the synchronous machine is higher.
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公开(公告)号：US20210091693A1
公开(公告)日：2021-03-25
申请号：US16970533
申请日：2018-02-19
Inventor： Hironori KAWAGUCHI , Hiroshi OGINO , Yasuaki MATSUMOTO , Akinobu ANDO
IPC: H02P6/28 , H02P6/17 , H02M7/155 , H02M7/525 , H02P25/026
Abstract: A converter controller configured to control a firing phase of a converter includes an integral element integrating a deviation of DC current from a current command value and generates a voltage command value of output voltage of the converter by performing control calculation of the deviation. In a first mode of performing commutation of an inverter by intermittently setting DC current to zero, the converter controller sets DC current to zero for a predetermined pause time by narrowing a phase control angle simultaneously with a commutation command for the inverter. When the control calculation is resumed immediately after the pause time, the converter controller uses a control amount calculated in control calculation immediately before the pause time as a preset value of the integral element immediately after the pause time.
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Patent Agency Ranking
公开(公告)号：US20210152104A1
公开(公告)日：2021-05-20
申请号：US16623905
申请日：2017-06-21
Inventor： Hironori KAWAGUCHI , Akinobu ANDO , Hiroshi OGINO , Yasuaki MATSUMOTO
IPC: H02P1/16 , H02P25/022 , H02P27/06 , H02M5/45 , H02P23/14
Abstract: A thyristor starter accelerates a synchronous machine from a stop state to a predetermined rotation speed by sequentially performing a first mode of performing commutation of an inverter by intermittently setting DC output current of a converter to zero and a second mode of performing commutation of the inverter by induced voltage of the synchronous machine. In the thyristor starter, during a first time period from start of performance of the second mode to arrival of the induced voltage of the synchronous machine at a first voltage value, a phase control angle of the inverter is changed such that a value thereof becomes larger as a rotation speed of the synchronous machine becomes higher.
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公开(公告)号：US20210083602A1
公开(公告)日：2021-03-18
申请号：US16620049
申请日：2017-06-21
Inventor： Yasuaki MATSUMOTO , Hiroshi OGINO , Hironori KAWAGUCHI , Akinobu ANDO , Ryoji MIYATAKE , Michio KATAOKA
IPC: H02P1/46 , H02P25/022 , H02K9/10 , H02K7/14 , H02M5/45
Abstract: A thyristor starter is configured to accelerate a synchronous machine from a stop state to a predetermined rotation speed by sequentially performing a first mode of performing commutation of an inverter by intermittently setting DC output current of a converter to zero and a second mode of performing commutation of the inverter by induced voltage of the synchronous machine. The thyristor starter is further configured to raise induced voltage in proportion to the rotation speed of the synchronous machine by keeping field current constant and to suppress rise of the induced voltage by reducing the field current after the induced voltage reaches a first voltage value, in the first mode.
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公开(公告)号：US20200076339A1
公开(公告)日：2020-03-05
申请号：US16611155
申请日：2017-06-21
Inventor： Yasuaki MATSUMOTO , Hiroshi OGINO , Hironori KAWAGUCHI , Akinobu ANDO
Abstract: A thyristor starter is configured to accelerate a synchronous machine from a stop state to a predetermined rotation speed by sequentially performing a first mode of performing commutation of an inverter by intermittently setting DC output current of a converter to zero and a second mode of performing commutation of the inverter by induced voltage of the synchronous machine. In a first case in which a first synchronous machine having a first inductance is started, a switching rotation speed for switching from the first mode to the second mode is set to a higher rotation speed, compared with a second case in which a second synchronous machine having a second inductance larger than the first inductance is started.
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公开(公告)号：US20150365020A1
公开(公告)日：2015-12-17
申请号：US14765420
申请日：2013-02-14
Inventor： Hiroshi OGINO , Akinobu ANDO , Yasuhiko HOSOKAWA , Ryota OKUYAMA
CPC classification number: H02P1/022 , H02M1/32 , H02M1/36 , H02M5/4505 , H02M5/452 , H02P1/52 , H02P2201/13
Abstract: A thyristor starting device includes: a converter which converts AC power supplied from an AC power source into DC power; a DC reactor which smooths a DC current; an inverter which converts the DC power provided from the converter into AC power, and supplies the AC power to a synchronous machine; a gate pulse generation circuit which generates a gate pulse to be provided to thyristors of the converter and the inverter; a control unit which sets a phase control angle of the gate pulse to be provided to the thyristors of the converter, by controlling a current of the converter such that the DC current flowing into the DC reactor matches a current command value; and an abnormality detection unit which compares a detection value of the DC current with the current command value, and determines an abnormality in the gate pulse based on a comparison result.
Abstract translation: 晶闸管启动装置包括：转换器，其将从AC电源提供的AC电力转换为DC电力; 直流电抗器，使直流电流平滑; 将从转换器提供的直流电力转换为交流电力的逆变器，并将交流电力提供给同步电机; 门脉冲发生电路，其生成要提供给转换器和逆变器的晶闸管的栅极脉冲; 控制单元，其通过控制转换器的电流使得流入DC电抗器的直流电流与电流指令值相匹配，来设定要提供给转换器的晶闸管的栅极脉冲的相位控制角; 以及异常检测单元，其将直流电流的检测值与电流指令值进行比较，并且基于比较结果来确定门脉冲中的异常。
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公开(公告)号：US20150365008A1
公开(公告)日：2015-12-17
申请号：US14765505
申请日：2013-02-14
Inventor： Hiroshi OGINO , Akinobu ANDO , Yasuhiko HOSOKAWA , Ryota OKUYAMA
IPC: H02M5/44
CPC classification number: H02M5/44 , H02M1/14 , H02M5/4505 , H02M5/451 , H02M2001/0016 , H02P1/52
Abstract: A power conversion device includes a converter, a DC reactor, and an inverter. A control unit controls the converter 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, the feedforward control amount being set in accordance with a DC voltage provided from the converter through the DC reactor. When an output frequency of the inverter is in a first region, the control unit 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.
Abstract translation: 电力转换装置包括转换器，直流电抗器和逆变器。 控制单元根据反馈控制量和前馈控制量的和来控制转换器，基于电流指令值与流入直流电抗器的直流电流之间的偏差来计算反馈控制量，前馈控制量 根据从转换器通过直流电抗器提供的直流电压进行设定。 当逆变器的输出频率处于第一区域时，与当输出频率处于频率低于第一区域的频率的第二区域相比时，控制单元减小用于计算前馈控制量的控制增益 。
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