公开(公告)号：US20160041567A1

公开(公告)日：2016-02-11

申请号：US14781834

申请日：2013-04-05

申请人： HITACHI, LTD.

发明人： Aung KO THET ,  Tomomichi ITOU ,  Noriaki HINO ,  Naohiro KUSUMI ,  Tetsuro MORISAKI ,  Kazuo TAKAHASHI

IPC分类号： G05F1/12 ,  F01D15/10

CPC分类号： G05F1/12 ,  F01D15/10 ,  F05D2220/76 ,  F05D2220/764 ,  H02J3/26 ,  H02P9/42 ,  Y02E40/50

摘要： A gas turbine generation system has a three-phase generator whose rotor is mechanically coupled to a gas turbine. The system comprises a three-phase voltage balancing circuit having elements independently operable for each phase to disperse or cancel unbalanced components of three-phase current, during unbalanced fault in a power grid connected to the generator, result in balancing of the three-phase voltage; and the voltage balancing constitutes a mechanism of avoiding the occurrence of the rotor vibration from mechanical resonance points on turbine blades.

摘要翻译： 燃气轮机发电系统具有三相发电机，其转子机械地联接到燃气轮机。 该系统包括三相电压平衡电路，其具有可独立操作的每个相位的元件，以在连接到发电机的电网中的不平衡故障期间分散或消除三相电流的不平衡分量，导致三相电压 ; 并且电压平衡构成了避免转子振动从涡轮机叶片上的机械共振点发生的机制。

公开(公告)号：US20140111066A1

公开(公告)日：2014-04-24

申请号：US14049719

申请日：2013-10-09

申请人： HITACHI, LTD.

发明人： Tomomichi ITO ,  Naohiro KUSUMI ,  Noriaki HINO ,  Nobuhiro KUSUNO ,  Aung KOTHET

IPC分类号： H02K3/12

CPC分类号： H02K3/12 ,  H02K3/28 ,  H02K11/33 ,  H02M2001/123 ,  Y02E10/725

摘要： A rotary machine includes two sets of three-phase stator winding wires and two sets of inverters connected to the same direct-current power supply. Alternating-current terminals of the inverters are respectively connected to the three-phase stator winding wires. Stator winding wires are housed in a plurality of slots to form a stator. The two sets of three-phase stator winding wires and the stator winding wires in the same phase of the sets are started to be wound from the slot positions, with phases thereof being different from each other by 180 degrees, among the plurality of slots and are finished being wound in the slot positions, with phases thereof different from each other by 180 degrees. Winding end points of the three-phase stator winding wires are respectively connected in common, and alternating-current voltages having the same magnitude and opposite phases are applied to the two sets of three-phase stator winding wire.

摘要翻译： 旋转机器包括两组三相定子绕组线和两组连接到同一直流电源的逆变器。 逆变器的交流端子分别连接到三相定子绕组。 定子绕组容纳在多个槽中以形成定子。 两组三相定子绕组和集合相同相位中的定子绕组开始从多个槽中彼此相差180度的槽位开始卷绕，并且 完成卷绕在槽位置，其相位彼此相差180度。 三相定子绕组的绕组端点分别相互连接，并且具有相同幅度和相位相位的交流电压被施加到两组三相定子绕组线。

公开(公告)号：US20180026569A1

公开(公告)日：2018-01-25

申请号：US15548173

申请日：2015-02-16

申请人： HITACHI, LTD.

发明人： Masatoshi YOSHIMURA ,  Naohiro KUSUMI ,  Noriaki HINO ,  Tomofumi SHIRAISHI ,  Aung Ko Thet .

IPC分类号： H02P27/14 ,  F02C7/32 ,  F04D25/06 ,  H02P3/14

CPC分类号： H02P27/14 ,  F02C7/32 ,  F04D25/06 ,  F05D2220/32 ,  F05D2220/76 ,  H02M1/08 ,  H02M1/081 ,  H02M7/537 ,  H02M7/53871 ,  H02P3/14 ,  H02P27/08 ,  H02P2101/25 ,  H02P2209/01

摘要： A control device for power conversion device controls a power conversion device in a system driven by the power conversion device to which an electric motor outputs AC power, and includes: a control pulse generation unit configured to generate a control pulse of the power conversion device; and a negative phase creation unit configured to input a pulse signal output by the control pulse generation unit and rotational speed information of the electric motor, and to generate an inverted signal of an output signal of the control pulse generation unit, wherein the pulse signal of a half cycle during one cycle of voltage, the pulse signal being generated by the control pulse generation unit, and a pulse signal of a next half cycle during the one cycle of voltage, the pulse signal being generated by the negative phase creation unit, are symmetrical in positive and negative relationship of voltage.

公开(公告)号：US20170363013A1

公开(公告)日：2017-12-21

申请号：US15533115

申请日：2014-12-18

申请人： Hitachi, Ltd.

发明人： Noriaki HINO ,  Naohiro KUSUMI ,  Aung Ko THET ,  Tomofumi SHIRAISHI ,  Masatoshi YOSHIMURA

IPC分类号： F02C9/20 ,  F01D15/10 ,  H02P9/04 ,  F02C3/10 ,  H02K7/18

CPC分类号： F02C9/20 ,  F01D15/10 ,  F02C3/10 ,  F02C6/00 ,  F02C9/00 ,  F05D2220/32 ,  F05D2220/76 ,  F05D2240/12 ,  F05D2240/35 ,  F05D2270/02 ,  F05D2270/05 ,  F05D2270/061 ,  H02J3/40 ,  H02J15/006 ,  H02K7/1823 ,  H02P9/04 ,  H02P2101/25

摘要： The gas turbine power generation system of the present invention repeats either the supply or absorption of power, in addition to generating power. The gas turbine power generation system is provided with a first rotation shaft, a compressor, a combustor, a first turbine upon which combustion gasses impinge, thereby causing the first turbine to rotate, and driving the first rotation shaft, a rotating electrical machine connected to the first rotation shaft, a speed adjustment mechanism for controlling the speed of the compressor by adjusting an air volume, a frequency converter for converting a frequency of power, the frequency converter being connected between the rotating electrical machine and a power system via a power line, and a controller for obtaining a request for an output from the gas turbine power generation system and controlling the combustor on the basis of the request. With respect to the frequency converter, the controller performs frequency converter control for changing the rotational speed of the rotating electrical machine on the basis of the request. The rotating electrical machine supplies or absorbs power in accordance with the change in the rotational speed. With respect to the speed adjustment mechanism, the controller performs speed adjustment mechanism control for setting the rotational speed to a reference value.

公开(公告)号：US20170346427A1

公开(公告)日：2017-11-30

申请号：US15535488

申请日：2014-12-19

申请人： Hitachi, Ltd.

发明人： Aung Ko THET ,  Noriaki HINO ,  Naohiro KUSUMI ,  Tomofumi SHIRAISHI ,  Masatoshi YOSHIMURA

IPC分类号： H02P9/00 ,  H02P9/04 ,  F01D15/10 ,  F02C3/10 ,  H02P101/25

CPC分类号： H02P9/006 ,  F01D15/10 ,  F02C3/10 ,  F05D2220/32 ,  F05D2220/76 ,  F05D2240/60 ,  F05D2260/15 ,  H02P9/04 ,  H02P2101/25 ,  Y02E20/14

摘要： A gas turbine power generation system having an improved function to stabilize the power system is disclosed. The gas turbine power generation system has a dual-shaft gas turbine, an electric generator mechanically connected to a low pressure turbine of the dual-shaft gas turbine and electrically connected to an electric power system, a rotary electric machine mechanically connected to a high pressure turbine through a compressor of the dual-shaft gas turbine and electrically connected to the electric power system, wherein a power oscillation is suppressed by operation of the rotary electric machine as a motor or as a generator.

公开(公告)号：US20170159577A1

公开(公告)日：2017-06-08

申请号：US15309598

申请日：2014-05-30

申请人： Hitachi, Ltd.

发明人： Noriaki HINO ,  Aung Ko THET ,  Naohiro KUSUMI

IPC分类号： F02C9/54 ,  F02C7/042 ,  H02K7/18 ,  F02C6/14 ,  F04D29/56 ,  F02C3/04 ,  F01D15/10

CPC分类号： F02C9/54 ,  F01D15/10 ,  F02C3/04 ,  F02C3/10 ,  F02C6/14 ,  F02C7/042 ,  F02C9/00 ,  F04D29/563 ,  F05D2220/32 ,  F05D2220/76 ,  F05D2240/35 ,  F05D2270/05 ,  F05D2270/053 ,  F05D2270/061 ,  H02J3/32 ,  H02J3/381 ,  H02J3/46 ,  H02K7/1823 ,  H02P9/04 ,  Y02E20/16

摘要： A gas turbine combined electric power generation apparatus includes a gas turbine, a generator performing electric power generation with a driving force of the turbine, a first control device controlling an output of the gas turbine, a frequency converter converting a frequency of electric power supplied from the gas turbine to an external system, a second control device controlling torque of the gas turbine, an electric power supply device other than the gas turbine, a third control device controlling electric power supplied from the electric power supply device to the external system, and a fourth control device distributing an output command to the first control device, the second control device, and the third control device.

公开(公告)号：US20160356171A1

公开(公告)日：2016-12-08

申请号：US15116706

申请日：2014-03-14

申请人： HITACHI, LTD.

发明人： Aung Ko THET ,  Noriaki HINO ,  Naohiro KUSUMI

IPC分类号： F01D15/10 ,  H02K7/18 ,  F01D5/02

CPC分类号： F01D15/10 ,  F01D5/02 ,  F02C3/10 ,  F02C6/14 ,  F05D2220/32 ,  F05D2220/76 ,  F05D2240/60 ,  F05D2270/06 ,  H02K7/1823

摘要： A gas turbine power generation system has a dual-shaft gas turbine, an electric generator mechanically connected to a low pressure turbine of the dual-shaft gas turbine and electrically connected to an electric power system, a rotary electric machine mechanically connected to a high pressure turbine through a compressor of the dual-shaft gas turbine and electrically connected to the electric power system, and an electric power output from the electric generator side to the electric power system is adjusted by operation of the rotary electric machine as a motor or as a generator.

摘要翻译： 燃气轮机发电系统具有双轴燃气轮机，机械地连接到双轴燃气轮机的低压涡轮机并与电力系统电连接的发电机，机械地连接到高压的旋转电机 涡轮机通过双轴燃气轮机的压缩机并且电连接到电力系统，并且从发电机侧向电力系统输出的电力通过作为电动机的旋转电机的操作或作为 发电机。