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Requirements on Power Electronics for converting Kitchen Appliances from AC to DC

机译：将厨房电器从交流电转换为直流电的电力电子要求

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The main power source for kitchen appliances for cooking and heating in Europe is natural gas. Since fossil fuels are limited, an energy transition is taking place from fossil fuel supply towards renewable energy such as solar and wind power. Kitchen appliances for cooking and heating have to be converted towards the use of electrical energy. Although many kitchen appliances are available for electrical energy supply, a transition to a DC grid would have benefits regarding control, earth leakage protection and peak power usage. Congestion management is solved via droop control. The bandwidth of droop control in DC grids is significantly higher compared to droop control in AC grids. Droop control enables load sharing during peak power demand. Earth leakage protection in an isolated grid enables early detection of earth faults, before they become critical. Furthermore short circuit protection in a DC grid is implemented via a predictive rate of change of current di/dt measurement, isolating a fault before the short circuit current can grow. The inrush current that exist when directly connecting the AC appliance to a DC grid, can be avoided by using a programmed current limiter which controls the level of the input current. Secondly this current limiter can be used to control the power level in appliances where current control is enough to control the application, such as the resistive heater in an oven.Examples are given on the appliance of a inductive cooking and controlling the heater in an oven.
机译：在欧洲，用于烹饪和取暖的厨房用具的主要动力来源是天然气。由于化石燃料有限，因此正在发生从化石燃料供应到可再生能源（例如太阳能和风能）的能源转换。用于烹饪和加热的厨房用具必须转换为电能的使用。尽管有许多厨房用具可用于提供电能，但过渡到直流电网将在控制，漏电保护和峰值功率使用方面带来好处。拥塞管理通过下垂控制解决。与交流电网中的下垂控制相比，直流电网中的下垂控制带宽明显更高。下降控制可在峰值功率需求期间实现负载共享。隔离电网中的漏电保护功能可以在接地故障变得严重之前就及早发现故障。此外，DC电网中的短路保护是通过预测电流di / dt测量的变化率来实现的，从而可以在短路电流增大之前隔离故障。通过将编程的限流器控制输入电流的大小，可以避免将交流设备直接连接到直流电网时存在的涌入电流。其次，该电流限制器可用于控制电流控制足以控制应用的设备中的功率水平，例如烤箱中的电阻加热器。在感应烹饪的设备中给出了一些示例，并在烤箱中控制加热器。

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