A power converter for converting electric power between a power source and a load , comprising: a boosting device including a rectifier configured to prevent a backflow of a current from the load to the power source , the boosting device being configured to boost a voltage of electric power supplied from the power source to a predetermined voltage; a commutation device configured to perform a commutation operation of directing a current flowing through the boosting device to an other path without flowing the current through the rectifier ; and a controller configured to perform control related to the voltage change of the boosting device and control related to the commutation operation of the commutation device , wherein the commutation device is configured to direct, when the commutation device performs the commutation operation, a current generating a voltage causing reverse recovery of the rectifier to the commutation device , characterized in that the commutation device includes a transformer that is provided with a secondary-side winding on the other path and that is configured to apply a voltage, induced by a current flowing through a primary-side winding of the transformer , to the secondary-side winding, and a transformer drive circuit that connects with the primary-side winding of the transformer and that drives the transformer , and the transformer is configured to have a turns ratio between the primary-side winding and the secondary-side winding in which a return current flowing on a side of the primary-side winding is smaller than a current capacity of the transformer drive circuit and the current generating the voltage causing the reverse recovery of the rectifier flows through the commutation device . a boosting device including a rectifier configured to prevent a backflow of a current from the load to the power source , the boosting device being configured to boost a voltage of electric power supplied from the power source to a predetermined voltage; a commutation device configured to perform a commutation operation of directing a current flowing through the boosting device to an other path without flowing the current through the rectifier ; and a controller configured to perform control related to the voltage change of the boosting device and control related to the commutation operation of the commutation device , wherein the commutation device is configured to direct, when the commutation device performs the commutation operation, a current generating a voltage causing reverse recovery of the rectifier to the commutation device , characterized in that the commutation device includes a transformer that is provided with a secondary-side winding on the other path and that is configured to apply a voltage, induced by a current flowing through a primary-side winding of the transformer , to the secondary-side winding, and a transformer drive circuit that connects with the primary-side winding of the transformer and that drives the transformer , and a transformer that is provided with a secondary-side winding on the other path and that is configured to apply a voltage, induced by a current flowing through a primary-side winding of the transformer , to the secondary-side winding, and a transformer drive circuit that connects with the primary-side winding of the transformer and that drives the transformer , and the transformer is configured to have a turns ratio between the primary-side winding and the secondary-side winding in which a return current flowing on a side of the primary-side winding is smaller than a current capacity of the transformer drive circuit and the current generating the voltage causing the reverse recovery of the rectifier flows through the commutation device . <EOS>