POWER ELECTRONICS DEVICE, COOPERATIVE CONTROL METHOD AND NON-TRANSITORY COMPUTER READABLE MEDIUM

• US 20150063473A1
• Filed: 03/14/2014
• Published: 03/05/2015
• Est. Priority Date: 08/30/2013
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: NISHIBAYASHI, Yasuyuki, ISE, Kotaro, SAKAMOTO, Takafumi, TOHZAKA, Yuji, AOYAMA, Ikuya
• Granted Patent: US 9,768,832 B2
• Time in Patent Office: Days
• US Class Current: 375/257
• CPC Class Codes: H02J 13/00 Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
• CPC Class Codes: H02J 2300/20 The dispersed energy generation being of renewable origin
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H04B 2203/5495 having measurements and testing channel
• CPC Class Codes: H04B 3/542 the information being in digital form
• CPC Class Codes: H04L 25/49 using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems spectral shaping H04L25/03828
• CPC Class Codes: H04L 25/4902 Pulse width modulation; Pulse position modulation
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02E 70/30 Systems combining energy storage with energy generation of non-fossil origin
• CPC Class Codes: Y04S 40/121 using the power network as support for the transmission

Abstract

According to one embodiment, there is provided a power electronics device in which a controlling unit selects a first power electronics device and a second power electronics device from power electronics devices, based on power attribute information and communication attribute information of each power electronics device, and the first power electronics device is a master of power allocation control of electric energy that the power electronics devices connected to one power line of power lines perform input and output on the one power line, and the second power electronics device is a master of output power phase synchronization control of power which the power electronics devices connected to the one power line outputs to the one power line.

Claims

1. A power electronics device comprising:

a first connecting unit to connect with a first power line of a plurality of power lines;

a second connecting unit to connect with a second power line of the power lines;

a power converting unit to convert power input from one of the first and second connecting units and output converted power to the other;

a communicating unit to perform communication with power electronics devices different from the power electronics device; and

a controlling unit to acquire power attribute information and communication attribute information of the power electronics devices different from the power electronics device using the communicating unit, and

select a first power electronics device and a second power electronics device out of the power electronics device and the power electronics devices different from the power electronics device based on the acquired power attribute information, the acquired communication attribute information, power attribute information of the power converting unit and communication attribute information of the communicating unit, the first power electronics device being a master of power allocation control of electric energy that the power electronics devices connected to one power line of the power lines performs input and output on the one power line, and the second power electronics device being a master of output power phase synchronization control of power which the power electronics devices connected to the one power line outputs to the one power line.

2. The device according to claim 1, wherein the controlling unit judges whether to perform the output power phase synchronization control on the one power line, based on a previously given condition, and, in a case of deciding not to perform the output power phase synchronization control, does not select the second power electronics device.

3. The device according to claim 2, wherein, in a case where the power electronics device connected to the one power line can receive a reference signal for phase synchronization from an outside, the controlling unit decides not to perform the output power phase synchronization control on the one power line.

4. The device according to claim 2, wherein, in a case where the power electronics devices connected to the one power line perform input and output of direct-current power on the one power line, the controlling unit decides not to perform the output power phase synchronization control on the one power line.

5. The device according to claim 1, wherein:

the communicating unit includes a synchronous communication unit to communication synchronization information for the output power phase synchronization control and a general-purpose communication unit to communicate information different from the synchronization information; and

the controlling unit employs, as the communication attribute information, communication attribute information of the synchronous communication unit and communication attribute information of synchronous communication units of the different power electronics devices.

6. The device according to claim 5, wherein the controlling unit selects the second power electronics device based on which of centralized communication and distributed communication the different power electronics devices and the synchronous communication unit perform.

7. The device according to claim 6, wherein, in a case where the different power electronics devices and the synchronous communication unit perform the distributed communication, the controlling unit selects the second power electronics device according to a number of the power electronics devices with which each of the different power electronics devices and the synchronous communication unit can connect.

8. The device according to claim 6, wherein, in a case where the different power electronics devices and the synchronous communication unit perform the distributed communication, the controlling unit selects the second power electronics device according to intensity of signals which each of the different power electronics devices and the synchronous communication unit receives from the power electronics devices other than itself.

9. The device according to claim 6, wherein, in a case where the different power electronics devices and the synchronous communication unit perform the centralized communication, the controlling unit selects the second power electronics device according to which role of a base station and a slave station the different power electronics devices and the power electronics device including the synchronous communication unit play.

10. The device according to claim 9, wherein the controlling unit selects, as the second power electronics device, a power electronics device that plays a role of the base station out of the different power electronics devices and the power electronics device including the synchronous communication unit.

11. The device according to claim 10, wherein the controlling unit selects, as the first power electronics device, same device as the second power electronics device.

12. A power electronics device comprising:

a first connecting unit to connect with a first power line of a plurality of power lines;

a second connecting unit to connect with a second power line of the power lines;

a power converting unit to convert power input from one of the first and second connecting units and output converted power to the other;

a communicating unit to perform communication with at least power electronics devices different from the power electronics device out of the different power electronics devices and a power measurement device; and

a controlling unit to acquire power attribute information of the different power electronics devices using the communicating unit, and select, from the power electronics device and the different power electronics devices, a master of power allocation control of electric energy that the power electronics devices connected to one power line of the power lines perform input and output on the one power line, based on the acquired power attribute information and power attribute information of the power converting unit,

wherein the master collects measurement information of the power measurement device by communication with the power measurement device or communication with at least one of the power electronics devices other than the master, and performs the power allocation control based on the measurement information.

13. A cooperative control method comprising:

acquiring power attribute information and communication attribute information on power electronics devices which are interconnected through a plurality of power lines, the power electronics devices each converting power input from the power line connected thereto and outputting the converted power to another power line connected thereto; and

selecting a first power electronics device and a second power electronics device from the power electronics devices, based on the acquired power attribute information and the acquired communication attribute information,

the first power electronics device being a master of power allocation control of electric energy that the power electronics devices connected to one power line of the power lines perform input and output on the one power line, and

the second power electronics device being a master of output power phase synchronization control of power which the power electronics devices connected to the one power line outputs to the one power line.

14. A cooperative control method comprising:

acquiring power attribute information on power electronics devices which are interconnected through a plurality of power lines, the power electronics devices each converting power input from the power line connected thereto and outputting the converted power to another power line connected thereto;

selecting, from the power electronics devices, a master of power allocation control of electric energy that the power electronics devices connected to one power line of the power lines perform input and output on the one power line, based on the acquired power attribute information; and

collecting, by the master, measurement information of a power measurement device via communication with the power measurement device or communication with at least one of the power electronics devices other than the master, and performing the power allocation control based on the measurement information.

15. A non-transitory computer readable medium including instructions stored therein which cause, when executed by a processor, the computer to execute steps comprising:

acquiring power attribute information and communication attribute information on power electronics devices which are interconnected through a plurality of power lines, the power electronics devices each converting power input from the power line connected thereto and outputting the converted power to another power line connected thereto; and

selecting a first power electronics device and a second power electronics device from the power electronics devices, based on the acquired power attribute information and the acquired communication attribute information,

the first power electronics device being a master of power allocation control of electric energy that the power electronics devices connected to one power line of the power lines perform input and output on the one power line, and

the second power electronics device being a master of output power phase synchronization control of power which the power electronics devices connected to the one power line outputs to the one power line.

16. A non-transitory computer readable medium including instructions stored therein which cause, when executed by a processor, the computer to execute steps comprising:

acquiring power attribute information on power electronics devices which are interconnected through a plurality of power lines, the power electronics devices each converting power input from the power line connected thereto and outputting the converted power to another power line connected thereto;

selecting, from the power electronics devices, a master of power allocation control of electric energy that the power electronics devices connected to one power line of the power lines perform input and output on the one power line, based on the acquired power attribute information; and

collecting, by the master, measurement information of a power measurement device via communication with the power measurement device or communication with at least one of the power electronics devices other than the master, and performing the power allocation control based on the measurement information.