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ALSTOM DX21 是阿爾斯通公司（Alstom）生產(chǎn)的一款數(shù)字勵磁控制器，由 Converteam 制造，現(xiàn)在歸屬于阿爾斯通公司。這種控制器是發(fā)電機控制系統(tǒng)的一部分，能夠自動調(diào)節(jié)發(fā)電機的磁場電流，以維持發(fā)電機端電壓在所需的水平 。

ALSTOM DX21-M3 數(shù)字勵磁控制器的主要特點和功能包括：

使用先進的數(shù)字控制技術，確保精確的勵磁電流調(diào)節(jié)和穩(wěn)定的輸出電壓。

支持多種勵磁控制模式，例如手動調(diào)節(jié)、PID控制等，以適應不同的運行要求和環(huán)境條件。

提供實時監(jiān)測和反饋，能夠快速響應負載變化。

通過通信接口（如Modbus或其他標準接口）與監(jiān)控系統(tǒng)集成，實現(xiàn)遠程監(jiān)控和控制。

具備故障診斷功能，能夠檢測并報告勵磁系統(tǒng)的異常狀態(tài)或設備故障。

設計緊湊，易于安裝在發(fā)電機控制柜中，并通過LCD顯示屏或鍵盤進行操作和設置。

通過嚴格的工業(yè)標準測試，確保在惡劣環(huán)境和高負載條件下的可靠性和穩(wěn)定性 。

應用領域廣泛，包括：

電廠：用于大型發(fā)電機組的勵磁系統(tǒng)控制，確保發(fā)電機在各種負載和電網(wǎng)條件下穩(wěn)定運行。

工業(yè)自動化：適用于工業(yè)領域的發(fā)電機控制和勵磁調(diào)節(jié)，如水泵站、工廠自備電源等。

電力系統(tǒng)：在電網(wǎng)故障時，確保備用電源和應急發(fā)電設備的快速響應和穩(wěn)定輸出。

交通運輸：在鐵路和船舶等運輸領域，作為電力系統(tǒng)的備用電源和主發(fā)電機的勵磁控制。

市政工程：應用于市政基礎設施的發(fā)電控制和勵磁調(diào)節(jié)，如市政電網(wǎng)和建筑物的應急電源系統(tǒng) 。

此外，還有提及到型號DX21-M2，表明該系列可能包含不同版本或型號的產(chǎn)品，例如在  中提到的DX21-M2型號。

The ALSTOM DX21 is a digital excitation controller from Alstom, manufactured by Converteam and now owned by Alstom. This controller is part of the generator control system and automatically regulates the generator's magnetic field current to maintain the generator terminal voltage at the desired level.

The main features and functions of the ALSTOM DX21-M3 digital excitation controller include:

Advanced digital control technology ensures accurate excitation current regulation and stable output voltage.

Support a variety of excitation control modes, such as manual adjustment, PID control, etc., to adapt to different operating requirements and environmental conditions.

Provides real-time monitoring and feedback to quickly respond to load changes.

Integrated with the monitoring system through communication interfaces (such as Modbus or other standard interfaces) to achieve remote monitoring and control.

With fault diagnosis function, can detect and report the abnormal state of the excitation system or equipment failure.

The compact design makes it easy to install in the generator control cabinet and operate and set up via an LCD display or keyboard.

Rigorous industry standard testing ensures reliability and stability in harsh environments and high load conditions.

A wide range of applications include:

Power plant: Used for excitation system control of large generator sets to ensure stable operation of generators under various load and grid conditions.

Industrial automation: suitable for generator control and excitation regulation in industrial fields, such as water pumping stations, factory owned power supplies, etc.

Power system: In case of power grid failure, ensure the fast response and stable output of standby power supply and emergency power generation equipment.

Transportation: In the field of transportation such as railways and ships, as a backup power supply for power systems and excitation control for main generators.

Municipal engineering: Applied to the generation control and excitation regulation of municipal infrastructure, such as municipal power grids and emergency power systems for buildings.

In addition, there is a reference to the model DX21-M2, indicating that the series may contain different versions or models of the product, such as the DX21-M2 model mentioned in the article.