CN107612355B - Distributed controller of modular matrix converter - Google Patents
Distributed controller of modular matrix converter Download PDFInfo
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- CN107612355B CN107612355B CN201710966263.1A CN201710966263A CN107612355B CN 107612355 B CN107612355 B CN 107612355B CN 201710966263 A CN201710966263 A CN 201710966263A CN 107612355 B CN107612355 B CN 107612355B
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Abstract
The invention discloses a distributed controller of a modular matrix converter, which comprises a system controller and an H-bridge controller; all controllers are connected through a high-speed communication and synchronization mechanism; each H-bridge controller receives an instruction of the system controller, realizes control over the H-bridge, and feeds back the state of the H-bridge to the system controller; because the communication system inevitably has delay of information transmission, all high-speed control functions are distributed in the H-bridge controller to be completed, and the low-speed control is completed in the system controller. The invention is simple and convenient and has good working performance.
Description
Technical Field
The invention relates to a distributed controller of a modular matrix converter.
Background
The Modular Matrix Converter M3C (Modular Multilevel Matrix Converter) is a novel ac-ac conversion circuit topology, and is mainly used for power electronic devices of ac-ac current in high-power, medium-voltage and high-voltage occasions, such as high-power motor drive, ac-ac current stations, and the like.
Because the control system is relatively complex and the connection among all control function modules is tight, the traditional control scheme adopts centralized control, namely, various voltage and current signals of the converter are collected and control signals of all switch tubes are generated through the centralized control.
Disclosure of Invention
The invention aims to provide a compact and convenient distributed controller of a modular matrix converter.
The technical solution of the invention is as follows:
a distributed controller for a modular matrix converter, comprising: the system comprises a system controller and an H-bridge controller; all controllers are connected through a high-speed communication and synchronization mechanism; each H-bridge controller receives an instruction of the system controller, realizes control over the H-bridge, and feeds back the state of the H-bridge to the system controller; because the communication system inevitably has delay of information transmission, all high-speed control functions are distributed in the H-bridge controller to be completed, and the low-speed control is completed in the system controller.
The H-bridge controllers can be combined, namely, one H-bridge controller is shared by several H-bridges.
The synchronization mechanism is used to establish the same clock signal in all controllers, and the 2-way synchronization mechanism is to establish 2 such clock signals, respectively related to the phase of the input voltage and the output voltage.
The synchronization mechanism may also be implemented via a communication network.
The high-speed control is bridge arm current control. The slow speed control comprises power control, energy storage control and energy storage balance.
The invention is simple and convenient and has good working performance.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a block diagram of the control system of the present invention.
Fig. 2 is a schematic diagram of the structure of the controller.
Fig. 3 is a schematic structural diagram of a control system according to an embodiment of the present invention.
Detailed Description
A distributed controller of a modularized matrix converter comprises a system controller and an H-bridge controller; all controllers are connected through a high-speed communication and synchronization mechanism; each H-bridge controller receives an instruction of the system controller, realizes control over the H-bridge, and feeds back the state of the H-bridge to the system controller; because the communication system inevitably has delay of information transmission, all high-speed control functions are distributed in the H-bridge controller to be completed, and the low-speed control is completed in the system controller.
The H-bridge controllers can be combined, namely, one H-bridge controller is shared by several H-bridges. The synchronization mechanism is used to establish the same clock signal in all controllers, and the 2-way synchronization mechanism is to establish 2 such clock signals, respectively related to the phase of the input voltage and the output voltage. The synchronization mechanism may also be implemented via a communication network.
The high-speed control is bridge arm current control. The slow speed control comprises power control, energy storage control and energy storage balance.
Specific embodiment referring to fig. 3, the control system includes two types of controllers, i.e., a system controller and an H-bridge controller, wherein only one system controller is provided, and each H-bridge is provided with one H-bridge controller, so that there are 9n H-bridge controllers. All controllers are connected through CAN communication.
The functions of the system controller include:
1) output power control to generate output current command
2) Total energy storage control of the system to generate input current command
3) Energy storage balance control to generate bridge arm circulation command
4) Input voltage phase lock to generate input voltage phase and voltage amplitude
5) Output voltage phase lock to generate output voltage phase and voltage amplitude
Each H-bridge controller includes the functions of:
1) and the bridge arm voltage equalizing is used for equalizing the balance of all H bridges in one bridge arm and is realized by adjusting a current instruction.
2) And (4) current coordinate transformation, wherein signals acquired from CAN communication are in dq coordinate systems, and need to be converted into static coordinates to obtain bridge arm current instructions.
3) And transforming the voltage coordinates to obtain input and output voltage values.
4) H-bridge current control, control of H-bridge current tracking current command
5) And PWM modulation, and generating a PWM sequence for controlling the semiconductor switch tube.
Claims (1)
1. A distributed controller for a modular matrix converter, comprising: the system comprises a system controller and an H-bridge controller; all controllers are connected through a high-speed communication and synchronization mechanism; each H-bridge controller receives an instruction of the system controller, realizes control over the H-bridge, and feeds back the state of the H-bridge to the system controller; because the communication system inevitably has information transmission delay, all high-speed control functions are distributed in the H-bridge controller to be completed, and the low-speed control is completed in the system controller; the H bridge controllers can be combined, namely, one H bridge controller is shared by a plurality of H bridges; the 2-way synchronization mechanism is used for establishing 2 clock signals which are respectively related to the phases of the input voltage and the output voltage; the high-speed control is bridge arm current control; the slow speed control comprises power control, energy storage control and energy storage balance;
the functions of the system controller include:
1) output power control to generate output current command Idqo_r
2) The total energy storage of the system is controlled to generate an input current command Idqi_r
3) Energy storage balance control to generate bridge arm circulation instruction Iloop_r
4) Phase-locked to generate an input voltage phase thetaiSum voltage amplitude Udqi
5) Output voltage phase locking to generate output voltage phase thetaoSum voltage amplitude Udqo
Each H-bridge controller includes the functions of:
1) bridge arm voltage equalizing is used for equalizing the balance of all H bridges in one bridge arm and is realized by adjusting a current instruction;
2) current coordinate transformation, namely, signals obtained from CAN communication are in a dq coordinate system and need to be converted into a static coordinate to obtain a bridge arm current instruction;
3) transforming voltage coordinates to obtain input and output voltage values;
4) h bridge current control, which controls an H bridge current tracking current instruction;
5) and PWM modulation, and generating a PWM sequence for controlling the semiconductor switch tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710966263.1A CN107612355B (en) | 2017-10-17 | 2017-10-17 | Distributed controller of modular matrix converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710966263.1A CN107612355B (en) | 2017-10-17 | 2017-10-17 | Distributed controller of modular matrix converter |
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| Publication Number | Publication Date |
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| CN107612355A CN107612355A (en) | 2018-01-19 |
| CN107612355B true CN107612355B (en) | 2020-07-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202518A (en) * | 2006-12-11 | 2008-06-18 | Ls产电株式会社 | H-bridge type multi- electrical level inverter using CAN communication |
| CN202455073U (en) * | 2011-12-01 | 2012-09-26 | 华中科技大学 | Multilevel active power filter distributed control device |
| CN105978342A (en) * | 2016-06-03 | 2016-09-28 | 中国人民解放军海军工程大学 | Modularized parallel connection combined type full bridge DC converter |
| JP2017116936A (en) * | 2015-12-22 | 2017-06-29 | ジョンソン・アンド・ジョンソン・ビジョン・ケア・インコーポレイテッドＪｏｈｎｓｏｎ ＆ Ｊｏｈｎｓｏｎ Ｖｉｓｉｏｎ Ｃａｒｅ， Ｉｎｃ． | High-voltage h-bridge control circuit for lens driver of electronic ophthalmic lens |
| CN107154741A (en) * | 2017-05-18 | 2017-09-12 | 北京交通大学 | A kind of control system and method based on MMC topological structures |
-
2017
- 2017-10-17 CN CN201710966263.1A patent/CN107612355B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202518A (en) * | 2006-12-11 | 2008-06-18 | Ls产电株式会社 | H-bridge type multi- electrical level inverter using CAN communication |
| CN202455073U (en) * | 2011-12-01 | 2012-09-26 | 华中科技大学 | Multilevel active power filter distributed control device |
| JP2017116936A (en) * | 2015-12-22 | 2017-06-29 | ジョンソン・アンド・ジョンソン・ビジョン・ケア・インコーポレイテッドＪｏｈｎｓｏｎ ＆ Ｊｏｈｎｓｏｎ Ｖｉｓｉｏｎ Ｃａｒｅ， Ｉｎｃ． | High-voltage h-bridge control circuit for lens driver of electronic ophthalmic lens |
| CN105978342A (en) * | 2016-06-03 | 2016-09-28 | 中国人民解放军海军工程大学 | Modularized parallel connection combined type full bridge DC converter |
| CN107154741A (en) * | 2017-05-18 | 2017-09-12 | 北京交通大学 | A kind of control system and method based on MMC topological structures |
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| CN107612355A (en) | 2018-01-19 |
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