Power electronics device, cooperative control method and non-transitory computer readable medium

Patent metadata

Field	Value
Publication number	US-9768832-B2
Application number	US-201414210862-A
Country	US
Kind code	B2
Filing date	Mar 14, 2014
Priority date	Aug 30, 2013
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

According to one embodiment, there is provided a power electronics device in which a 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.

First claim

The invention claimed is:

1. A power electronics device comprising:
a first connector for connecting with a first power line of a plurality of power lines;
a second connector for connecting with a second power line of the power lines;
a power converter for converting power input from one of the first and second connectors and output converted power to the other of the first and second connectors;
a communicator for performing communication with power electronics devices different from the power electronics device; and
a controller for acquiring power attribute information and communication attribute information of the power electronics devices different from the power electronics device using the communicator, and for selecting 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 converter and communication attribute information of the communicator, 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 output to the one power line.

2. The device according to claim 1 , wherein the controller 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 outside, the controller 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 controller decides not to perform the output power phase synchronization control on the one power line.

5. The device according to claim 1 , wherein:
the communicator includes a synchronous communicator for communication synchronization information for the output power phase synchronization control and a general-purpose communicator for communicating information different from the synchronization information; and
the controller employs, as the communication attribute information, communication attribute information of the synchronous communicator and communication attribute information of synchronous communicators of the different power electronics devices.

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

7. The device according to claim 6 , wherein, in a case where the different power electronics devices and the synchronous communicator perform the distributed communication, the controller 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 communicator can connect.

8. The device according to claim 6 , wherein, in a case where the different power electronics devices and the synchronous communicator perform the distributed communication, the controller selects the second power electronics device according to intensity of signals which each of the different power electronics devices and the synchronous communicator 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 communicator perform the centralized communication, the controller 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 communicator play.

10. The device according to claim 9 , wherein the controller 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 communicator.

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

12. A power electronics device comprising:
a first connector for connecting with a first power line of a plurality of power lines;
a second connector for connecting with a second power line of the power lines;
a power converter for converting power input from one of the first and second connectors and output converted power to the other of the first and second connectors;
a communicator for performing 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 controller for acquiring power attribute information of the different power electronics devices using the communicator, and selecting 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 converter,
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 output 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 convert

Assignees

• Toshiba Kk

Inventors

• Nishibayashi Yasuyuki
• Ise Kotaro
• Sakamoto Takafumi
• Tohzaka Yuji
• Aoyama Ikuya

Classifications

• H04B2203/5495

  having measurements and testing channel · CPC title

• H04L25/49

  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 title

• H04L25/4902

  Pulse width modulation; Pulse position modulation · CPC title

• H04B3/542 Primary

  the information being in digital form · CPC title

• H02J13/00

  Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network · CPC title