| 摘要 |
The invention relates to a method and a device for protecting at least one consumer against surges in a method for the contactless energy transmission of electric power from one or more medium frequency power source(s), whose frequencies can deviate by the medium frequency f>M<, to the mobile consumer(s) via one or more transmission paths and transmission heads that are allocated to the consumers comprising an adapter connected downstream for adjusting the power taken up by the transmission path. According to the invention, a medium frequency power source supplies one transmission path with a medium frequency voltage, whose effective value remains constant during the power transmission, the respective consumer being supplied with energy by at least one adapter with at least one infeed. One or more infed currents are rectified in a respective rectifier, filtered using a respective intermediate circuit choke and combined. According to the power requirement of the consumers, the respective combined intermediate circuit current is either fed via a switch to an intermediate circuit capacitor, which buffers the output voltage U>=< of the adapter, or is diverted before reaching said capacitor, whereby the voltage U>=< at at least one intermediate circuit capacitor is compared with a predeterminable value and if said value is exceeded, an electronic circuit-breaker is activated to divert the intermediate circuit current. |
