Mobile side circuit of a wireless power transmission system, comprising: a mobile side resonant circuit inductively coupled to a stationary side resonant circuit of the wireless power transmission system; a mobile side rectifier adapted to operate in a first operative mode being a full bridge rectification mode during failure free operation of the mobile side circuit, the mobile side rectifier is a full-bridge rectifier having a first rectifying element and a second rectifying element connected in series between a first output terminal and a second output terminal of the full-bridge rectifier and having a common connection terminal connected to a first input terminal of the full-bridge rectifier and having a third rectifying element and a fourth rectifying element connected in series between the first output terminal and the second output terminal of the full-bridge rectifier and having a common connection terminal connected to a second input terminal of the full-bridge rectifier, whereby the first input terminal and the second input terminal of the mobile side rectifier are connected to the mobile side resonant circuit; an energy storage circuit connected in parallel to the output terminals of the mobile side rectifier and adapted to smooth the output of the mobile side rectifier; characterized in that the mobile side rectifier comprises a first switching element connected in parallel to the first rectifying element and a second switching element connected in parallel to the fourth rectifying element; and a mobile side control circuit is adapted to close simultaneously the first switching element and the second switching element upon occurrence of a failure state in the mobile side circuit to change operation from the first operative mode to a second operative mode where a DC voltage across the energy storage circuit is switched through to the first input terminal and the second input terminal of the mobile side rectifier without polarity reversal and without short-circuit of the mobile side resonant circuit; or the mobile side rectifier comprises a third switching element connected in parallel to the second rectifying element and a fourth switching element connected in parallel to the third rectifying element; and the mobile side control circuit is adapted to close or open simultaneously the third switching element and the fourth switching element upon occurrence of a failure state in the mobile side circuit to change operation from the first operative mode to a third operative mode where a DC voltage across the energy storage circuit is switched through to the first input terminal and the second input terminal of the mobile side rectifier with polarity reversal and without short-circuit of the mobile side resonant circuit. a mobile side resonant circuit inductively coupled to a stationary side resonant circuit of the wireless power transmission system; a mobile side rectifier adapted to operate in a first operative mode being a full bridge rectification mode during failure free operation of the mobile side circuit, the mobile side rectifier is a full-bridge rectifier having a first rectifying element and a second rectifying element connected in series between a first output terminal and a second output terminal of the full-bridge rectifier and having a common connection terminal connected to a first input terminal of the full-bridge rectifier and having a third rectifying element and a fourth rectifying element connected in series between the first output terminal and the second output terminal of the full-bridge rectifier and having a common connection terminal connected to a second input terminal of the full-bridge rectifier, whereby the first input terminal and the second input terminal of the mobile side rectifier are connected to the mobile side resonant circuit; an energy storage circuit connected in parallel to the output terminals of the mobile side rectifier and adapted to smooth the output of the mobile side rectifier; characterized in that the mobile side rectifier comprises a first switching element connected in parallel to the first rectifying element and a second switching element connected in parallel to the fourth rectifying element; and a mobile side control circuit is adapted to close simultaneously the first switching element and the second switching element upon occurrence of a failure state in the mobile side circuit to change operation from the first operative mode to a second operative mode where a DC voltage across the energy storage circuit is switched through to the first input terminal and the second input terminal of the mobile side rectifier without polarity reversal and without short-circuit of the mobile side resonant circuit; or the mobile side rectifier comprises a third switching element connected in parallel to the second rectifying element and a fourth switching element connected in parallel to the third rectifying element; and the mobile side control circuit is adapted to close or open simultaneously the third switching element and the fourth switching element upon occurrence of a failure state in the mobile side circuit to change operation from the first operative mode to a third operative mode where a DC voltage across the energy storage circuit is switched through to the first input terminal and the second input terminal of the mobile side rectifier with polarity reversal and without short-circuit of the mobile side resonant circuit.