DC power supply

这里所用的可变直流电源既用作源又用作漏极，对于IAL的广泛研究项目具有重要意义。该系统由以下主要部件组成：-双向电源侧逆变器，-用于电压和功率调节的不同并联DC/DC单元，以及整个系统的附加不可缺少的部件，如配电、保护装置、接触器、开关、接线盒、冷却装置、直流连接器和控制面板。该系统是一种用于高性能驱动系统的可变模块化直流电源，可灵活地用于IAL不同的电机和驱动系统研究项目。IAL电机研究小组的研究重点除了电机的设计方法和相关的温度和冷却管理外，还包括对轴承电压和电流、磁激振动和声学噪声以及额外功率损耗等重要副作用的分析和预测方法。申请的系统应用于下文所述的研究项目。例如，在实际条件下对样机或研究驱动系统进行实验验证需要强大且可变的直流电源，包括用于调整所需直流电压的移动式DC/DC控制器以及相关的辅助系统，如灵活的电源连接点或冷却单元。根据单独的测试设置和被测设备的成熟度，这需要电机或发电机运行的固定或单独可调的直流电压，以满足驱动系统组件在电压幅度或电压调节方面的变化要求。由于一些被测试的创新设备的高功率密度，基于对不同驱动系统组件的冷却液进行强大调节的有效冷却系统必须是供应和测试系统的组成部分。除了用于不同的固定式或移动式驱动系统外，所申请的系统还应满足所有或至少大多数需要强大直流电源的应用的要求。使用这种可变和双向直流电源，将有可能满足未来高功率驱动系统的实验验证要求。因此，申请的系统将大大有助于在驱动系统和电力电子研究所当前和未来的不同研究项目中获得知识。

The variable DC supply to be used as source as well as as drain which is applied for here, is of great importance for a broad range of research projects at IAL. The system consists of the following main components: - bi-directional supply-side inverter, - different parallel DC/DC units for voltage and power adjustment and additional indispensable components of the overall system as power distribution, protection devices, contactors, switches, terminal boxes, cooling units, DC connectors and control panels.The system applied for is a variable and modular DC supply for high performance drive systems, which can be used in a flexible way for different research projects on electrical machines and drive systems at IAL. The research focus of IAL's electrical machines' research group is, besides design methods for electrical machines and the related temperature and cooling management, on analysis and prediction methods for important side effects as bearing voltages and currents, magnetically excited vibration and acoustic noise, and additional power losses. The system applied for shall be used for the research program described below. E.g., the experimental validation of prototype or research drive systems under realistic conditions requires a powerful and variable DC supply including mobile DC/DC controlers for the adjustment of the required DC voltage and the related auxiliary systems such as flexible power connection points or cooling units. Depending on the individual test set-up and the maturity of the device under test, this needs a fixed or an individually adjustable DC voltage for motor or for generator operation in order to meet the changing requirements for the drive system components with respect to voltage magnitude or voltage regulation. Due to the high power density of some innovative devices under test, an effective cooling system based on powerful conditioning of the cooling liquid for the different drive system components must be an integral part of the supply and test system.Besides being used for different stationary or mobile drive systems, the system applied for shall meet the requirements of all or at least most applications requiring a powerful DC supply. Using this variable and bidirectional DC supply, it will be possible to cover what the experimental validation of high power drive systems asks for in the future. Thus, the system applied for will contribute significantly to the knowledge gain in different current and future research projects at the institute for drive systems and power electronics.