公开(公告)号：US20190052185A1

公开(公告)日：2019-02-14

申请号：US16164920

申请日：2018-10-19

申请人： DAIHEN Corporation

发明人： Nobuyuki HATTORI ,  Akihiro OHORI ,  Hiroki MUNECHIKA

IPC分类号： H02M7/44 ,  H02M7/487 ,  H02M7/5387 ,  H02M7/5395 ,  H02M1/12 ,  H02M1/00

CPC分类号： H02M7/44 ,  H02M1/12 ,  H02M7/487 ,  H02M7/5387 ,  H02M7/5395 ,  H02M2001/0025 ,  H02M2001/0054 ,  H02M2007/53876 ,  Y02B70/1491

摘要： A control circuit reduces switching loss by periodically stopping switching elements, and reduces the difference between the time for which positive switching elements are in on state and the time for which negative switching elements are in on state. The control circuit includes a command value signal generator generating command value signals Xu1, Xv1, and Xw1 from line voltage command value signals Xuv, Xvw, and Xwu, and includes a PWM signal generator generating PWM signals by the command value signals Xu1, Xv1, and Xw1. The command value signals Xu1, Xv1, and Xw1 are continuously at “0” for a predetermined period, and are continuously at “2” for another period. This enables reducing the difference between the period for which the PWM signals are low and the period for which they are highl.

公开(公告)号：US20160241158A1

公开(公告)日：2016-08-18

申请号：US15041413

申请日：2016-02-11

申请人： DAIHEN Corporation

发明人： Nobuyuki HATTORI ,  Akihiro OHORI ,  Hiroki MUNECHIKA

IPC分类号： H02M7/44 ,  H02M1/12

CPC分类号： H02M7/44 ,  H02M1/12 ,  H02M7/487 ,  H02M7/5387 ,  H02M7/5395 ,  H02M2001/0025 ,  H02M2001/0054 ,  H02M2007/53876 ,  Y02B70/1491

摘要： A control circuit reduces switching loss by periodically stopping switching elements, and reduces the difference between the time for which positive switching elements are in on state and the time for which negative switching elements are in on state. The control circuit includes a command value signal generator generating command value signals Xu1, Xv1, and Xw1 from line voltage command value signals Xuv, Xvw, and Xwu, and includes a PWM signal generator generating PWM signals by the command value signals Xu1, Xv1, and Xw1. The command value signals Xu1, Xv1, and Xw1 are continuously at “0” for a predetermined period, and are continuously at “2” for another period. This enables reducing the difference between the period for which the PWM signals are low and the period for which they are high1.

摘要翻译： 控制电路通过周期性地停止开关元件来减少开关损耗，并且减小正开关元件处于导通状态的时间与负开关元件处于导通状态的时间之间的差异。 控制电路包括从线电压指令值信号Xuv，Xvw，Xwu生成指令值信号Xu1，Xv1，Xw1的指令值信号发生器，具有由指令值信号Xu1，Xv1，Xv1， 和Xw1。 指令值信号Xu1，Xv1，Xw1连续处于“0”一段时间，并连续地为“2”。 这使得能够减小PWM信号低的周期与它们为高的周期之间的差1。

公开(公告)号：US20220294250A1

公开(公告)日：2022-09-15

申请号：US17694374

申请日：2022-03-14

申请人： DAIHEN Corporation

发明人： Takashi KITAMURA ,  Akihiro OHORI

IPC分类号： H02J7/00 ,  H02M1/42 ,  H02M1/00 ,  H02M7/537

摘要： A monitoring device includes a receiving unit receiving effective power output value and reactive power output value from inverter devices, a setting unit setting effective power target value and reactive power output value for each inverter device, a first calculation unit calculating voltage phase command value for each inverter device, a second calculation unit calculating a voltage amplitude command value for each inverter device, a transmitting unit transmitting the voltage phase command value and voltage amplitude command value to relevant inverter devices, a distribution rate calculating unit calculating a distribution rate for each inverter device, and a total value calculating unit calculating effective power total value and reactive power total value for the inverter devices. The setting unit calculates effective power targe value using effective power total value and distribution rate for each inverter device, and also calculates reactive power targe value using reactive power total value and distribution rate for each inverter device.

公开(公告)号：US20210270874A1

公开(公告)日：2021-09-02

申请号：US17320895

申请日：2021-05-14

申请人： DAIHEN Corporation

发明人： Akihiro OHORI ,  Nobuyuki HATTORI

IPC分类号： G01R19/25

摘要： A measurement device that performs a predetermined measurement task together with a plurality of other measurement devices is provided. This measurement device is provided with a sampling phase generator for generating a sampling phase for instructing a timing of sampling, and a communication unit for communicating with at least one of the plurality of other measurement devices. The communication unit transmits the sampling phase generated by the sampling phase generator to at least one of the plurality of other measurement devices. The sampling phase generator is configured to generate a third sampling phase, using an operation that is based on a generated first sampling phase and a second sampling phase received by the communication unit from at least one of the plurality of other measurement devices.

公开(公告)号：US20200295571A1

公开(公告)日：2020-09-17

申请号：US16797238

申请日：2020-02-21

申请人： DAIHEN Corporation

发明人： Takafumi HANAO ,  Akihiro OHORI

IPC分类号： H02J3/38 ,  H02J3/32 ,  H02J3/46 ,  H02J13/00

摘要： A power system is provided for controlling a connection point power at a connection point with a power grid D. The power system includes a processing device that calculates a guidance command value for controlling the connection point power to achieve a target power, and a plurality of power control devices that each control the output power of mutually different types of control targets, based on a common guidance command value inputted from the processing device. Each of the plurality of power control devices calculates a target value of the output power, based on an optimization problem including a common evaluation function. The evaluation function includes the guidance command value and a design parameter for which a setting value set for each of the plurality of power control devices is substituted.

公开(公告)号：US20180234029A1

公开(公告)日：2018-08-16

申请号：US15956178

申请日：2018-04-18

申请人： DAIHEN Corporation

发明人： Nobuyuki HATTORI ,  Akihiro OHORI ,  Hiroki MUNECHIKA

IPC分类号： H02M7/44 ,  H02M7/487 ,  H02M7/5387 ,  H02M7/5395 ,  H02M1/12 ,  H02M1/00

CPC分类号： H02M7/44 ,  H02M1/12 ,  H02M7/487 ,  H02M7/5387 ,  H02M7/5395 ,  H02M2001/0025 ,  H02M2001/0054 ,  H02M2007/53876 ,  Y02B70/1491

摘要： A control circuit reduces switching loss by periodically stopping switching elements, and reduces the difference between the time for which positive switching elements are in on state and the time for which negative switching elements are in on state. The control circuit includes a command value signal generator generating command value signals Xu1, Xv1, and Xw1 from line voltage command value signals Xuv, Xvw, and Xwu, and includes a PWM signal generator generating PWM signals by the command value signals Xu1, Xv1, and Xw1. The command value signals Xu1, Xv1, and Xw1 are continuously at “0” for a predetermined period, and are continuously at “2” for another period. This enables reducing the difference between the period for which the PWM signals are low and the period for which they are high.

公开(公告)号：US20220294335A1

公开(公告)日：2022-09-15

申请号：US17804877

申请日：2022-06-01

申请人： DAIHEN Corporation

发明人： Akihiro OHORI ,  Nobuyuki HATTORI

IPC分类号： H02M1/12 ,  H02P4/00 ,  G06F17/14 ,  H03H17/06 ,  H02P21/00 ,  H02P21/22 ,  H02M7/44

摘要： A signal processor is configured to perform a process equivalent to performing a series of fixed-to-rotating coordinate conversion, a predetermined process and then rotating-to-fixed coordinate conversion, while maintaining linearity and time-invariance. The signal processor performs a process given by the following matrix G: G = [ F ⁡ ( s + j ⁢ ω 0 ) + F ⁡ ( s - j ⁢ ω 0 ) 2 F ⁡ ( s + j ⁢ ω 0 ) - F ⁡ ( s - j ⁢ ω 0 ) 2 - F ⁡ ( s + j ⁢ ω 0 ) - F ⁡ ( s - j ⁢ ω 0 ) 2 ⁢ j F ⁡ ( s + j ⁢ ω 0 ) + F ⁡ ( s - j ⁢ ω 0 ) 2 ] where F(s) is a transfer function representing the predetermined process, ω0 is a predetermined angular frequency and j is the imaginary unit.

公开(公告)号：US20210013794A1

公开(公告)日：2021-01-14

申请号：US17036682

申请日：2020-09-29

申请人： DAIHEN Corporation

发明人： Akihiro OHORI ,  Nobuyuki HATTORI

IPC分类号： H02M1/12 ,  H02P4/00 ,  G06F17/14 ,  H03H17/06 ,  H02P21/00 ,  H02P21/22 ,  H02M7/44

摘要： A signal processor is configured to perform a process equivalent to performing a series of fixed-to-rotating coordinate conversion, a predetermined process and then rotating-to-fixed coordinate conversion, while maintaining linearity and time-invariance. The signal processor performs a process given by the following matrix G: G = [ F  ( s + j   ω 0 ) + F  ( s - j   ω 0 ) 2 F  ( s + j   ω 0 ) - F  ( s - j   ω 0 ) 2  j - F  ( s + j   ω 0 ) - F  ( s - j   ω 0 ) 2  j F  ( s + j   ω 0 ) + F  ( s - j   ω 0 ) 2 ] where F(s) is a transfer function representing the predetermined process, ω0 is a predetermined angular frequency and j is the imaginary unit.

公开(公告)号：US20200044557A1

公开(公告)日：2020-02-06

申请号：US16600726

申请日：2019-10-14

申请人： DAIHEN Corporation

发明人： Akihiro OHORI ,  Nobuyuki HATTORI

IPC分类号： H02M1/12 ,  H02P4/00 ,  G06F17/14 ,  H03H17/06 ,  H02P21/00 ,  H02P21/22 ,  H02M7/44

摘要： A signal processor is configured to perform a process equivalent to performing a series of fixed-to-rotating coordinate conversion, a predetermined process and then rotating-to-fixed coordinate conversion, while maintaining linearity and time-invariance. The signal processor performs a process given by the following matrix G: G = [ F  ( s + j   ω 0 ) + F  ( s - j   ω 0 ) 2 F  ( s + j   ω 0 ) - F  ( s - j   ω 0 ) 2  j - F  ( s + j   ω 0 ) - F  ( s - j   ω 0 ) 2  j F  ( s + j   ω 0 ) + F  ( s - j   ω 0 ) 2 ] where F(s) is a transfer function representing the predetermined process, ω0 is a predetermined angular frequency and j is the imaginary unit.

公开(公告)号：US20190195923A1

公开(公告)日：2019-06-27

申请号：US16285501

申请日：2019-02-26

申请人： DAIHEN Corporation

发明人： Akihiro OHORI ,  Nobuyuki HATTORI

IPC分类号： G01R19/25

CPC分类号： G01R19/2513

摘要： A measurement device that performs a predetermined measurement task together with a plurality of other measurement devices is provided. This measurement device is provided with a sampling phase generator for generating a sampling phase for instructing a timing of sampling, and a communication unit for communicating with at least one of the plurality of other measurement devices. The communication unit transmits the sampling phase generated by the sampling phase generator to at least one of the plurality of other measurement devices. The sampling phase generator is configured to generate a third sampling phase, using an operation that is based on a generated first sampling phase and a second sampling phase received by the communication unit from at least one of the plurality of other measurement devices.