Abstract: A control method of controlling a resonance type power conversion device including a voltage resonance circuit is provided. The voltage resonance circuit comprising, a choke coil connected to input power supply, a first switching element connected to the choke coil, a capacitor connected in parallel to the first switching element, and a resonance circuit connected between a connection point and an output terminal, the connection point being a point at which the choke coil and the first switching element are connected. The control method comprising, detecting a polarity of current flowing through parallel circuit connected in parallel to the first switching element by using a sensor included in the voltage resonance circuit; and controlling an operating condition of the first switching element depending on a polarity of the current detected by the sensor.

Abstract: A method for controlling a power conversion device can prevent over temperature by suppressing a change in impedance of a capacitor included in a rectifier circuit. The power conversion device includes an AC wave generation circuit for generating an AC wave, and a rectifier circuit for rectifying the AC wave generated by the AC wave generation circuit with a configuration including a rectifier capacitor and a diode connected in parallel. The method for controlling the power conversion device regulates the AC wave input to the rectifier capacitor depending on a change in impedance of the rectifier capacitor so as to suppress the change in the impedance of the rectifier capacitor.

Abstract: A method for controlling a power conversion device for converting power from a power supply by controlling an input to a resonance circuit comprising a resonance coil and a resonance capacitor, with a switching element, the method comprising simultaneously changing a switching frequency and a time ratio of the switching element so that the switching element satisfies a condition of zero-voltage switching when an output power of the power conversion device is changed.

Abstract: A method for controlling a resonance type power converter including a first resonance circuit (L0, C0) and a shunt circuit (3), which converts and outputs the power of the DC power supply, shunting a current flowing into a first capacitor (CS) by controlling a second switching element (S2) during a predetermined period within turn-off period of a first switching element (S1), the first capacitor connected in parallel to the first switching element (S1), the second switching element (S2) included in the shunt circuit (3), and the first switching element (S1) operated in response to the resonance of the first resonance circuit (L0, C0).

Abstract: A method for controlling a power conversion device for converting power from a power supply by controlling an input to a resonance circuit comprising a resonance coil and a resonance capacitor, with a switching element, the method comprising simultaneously changing a switching frequency and a time ratio of the switching element so that the switching element satisfies a condition of zero-voltage switching when an output power of the power conversion device is changed.

Abstract: A method for controlling a power conversion device can prevent over temperature by suppressing a change in impedance of a capacitor included in a rectifier circuit. The power conversion device includes an AC wave generation circuit for generating an AC wave, and a rectifier circuit for rectifying the AC wave generated by the AC wave generation circuit with a configuration including a rectifier capacitor and a diode connected in parallel. The method for controlling the power conversion device regulates the AC wave input to the rectifier capacitor depending on a change in impedance of the rectifier capacitor so as to suppress the change in the impedance of the rectifier capacitor.

Abstract: A method for controlling a resonance type power converter including a first resonance circuit (L0, C0) and a shunt circuit (3), which converts and outputs the power of the DC power supply, shunting a current flowing into a first capacitor (CS) by controlling a second switching element (S2) during a predetermined period within turn-off period of a first switching element (S1), the first capacitor connected in parallel to the first switching element (S1), the second switching element (S2) included in the shunt circuit (3), and the first switching element (S1) operated in response to the resonance of the first resonance circuit (L0, C0).

Abstract: A control method of controlling a resonance type power conversion device including a voltage resonance circuit is provided. The voltage resonance circuit comprising, a choke coil connected to input power supply, a first switching element connected to the choke coil, a capacitor connected in parallel to the first switching element, and a resonance circuit connected between a connection point and an output terminal, the connection point being a point at which the choke coil and the first switching element are connected. The control method comprising, detecting a polarity of current flowing through parallel circuit connected in parallel to the first switching element by using a sensor included in the voltage resonance circuit; and controlling an operating condition of the first switching element depending on a polarity of the current detected by the sensor.