Abstract: A method for controlling the input voltage frequency of a DC-DC converter includes defining a setpoint voltage value, computing a control frequency value of the DC-DC converter as a function of the battery voltage, a power setpoint, and the setpoint input voltage, and applying the control frequency to the converter.

Abstract: A bidirectional resonant DC/DC converter comprising a full-bridge coupled to an CLLLC resonant tank and a power transformer and rectifier stage, said full-bridge comprising two pairs of power switches S1/S2 and S3/S4, configured such that in a first mode of operation: switches S1 and S4 are driven by the same two pulse pattern with a phase shift ?1, said two pulse pattern comprising a first pulse P1 of width t1 and a second pulse P2 of width t2, P1 and P2 being separated by an off-time t3, and switches S2 and S3 are driven by the same single pulse pattern comprising pulse P4 of width t4 with a phase shift ?2. This converter can be used in battery chargers, in particular, for electrical vehicles.

Abstract: A method for controlling the input voltage frequency of a DC-DC converter includes calculating a control frequency value of the DC-DC converter. If the measured voltage is greater than the upper voltage limit, the control frequency corresponds to the minimum control frequency. If the measured voltage is less than the lower voltage limit, the control frequency corresponds to the maximum control frequency. If the measured voltage is between the upper voltage limit and the lower voltage limit, the control frequency corresponds to an average frequency calculated as a function of the difference between the setpoint voltage value and the measured voltage, upper error values and lower error values, and maximum and minimum control frequency values.

Abstract: A control method for controlling the frequency of the input voltage of a DC-DC converter of a bidirectional electrical charger, operating in discharge mode, includes: defining a set voltage value, calculating a control frequency value of the DC-DC converter, obtained by inverting the gain of the DC-DC converter, as a function of an output battery voltage, a set input power, and the set input voltage; finely adjusting the DC bus by increasing/decreasing the frequency, and applying the control frequency thus calculated to the converter.

Abstract: A method for controlling the input voltage frequency of a DC-DC converter includes defining a setpoint voltage value, computing a control frequency value of the DC-DC converter as a function of the battery voltage, a power setpoint, and the setpoint input voltage, and applying the control frequency to the converter.

Abstract: A method for controlling the input voltage frequency of a DC-DC converter includes calculating a control frequency value of the DC-DC converter. If the measured voltage is greater than the upper voltage limit, the control frequency corresponds to the minimum control frequency. If the measured voltage is less than the lower voltage limit, the control frequency corresponds to the maximum control frequency. If the measured voltage is between the upper voltage limit and the lower voltage limit, the control frequency corresponds to an average frequency calculated as a function of the difference between the setpoint voltage value and the measured voltage, upper error values and lower error values, and maximum and minimum control frequency values.