A power converting apparatus comprising: a rectifier configured to convert alternating-current power from an alternating-current power supply into direct-current power; a short-circuit unit configured to short-circuit the alternating-current power supply via a reactor; and a control unit configured to control a short-circuit operation of the short-circuit unit, the short-circuit operation being a switching, the control unit includes a driving signal generating unit configured to generate a driving signal with which the short-circuit unit performs the switching, and a pulse dividing unit configured to divide the driving signal into a plurality of switching pulses, wherein, in the case that a number of times of the switching of the short-circuit unit during a half cycle of the alternating-current power supply is increased on the basis of a load condition, the control unit is configured to set a first ON time larger than a second ON time, the first ON time being a period until all driving signals are turned off after the first driving signal is turned on as a period from a start of a first switching to an end of all switching during the half cycle of the alternating-current power supply after the increase of the number of times of the switching of the short-circuit unit, the second ON time being a period until all driving signals are turned off after the first driving signal is turned on as a period from a start of a first switching to an end of all switching in the half cycle period of the alternating-current power supply before the increase of the number of times of the switching of the short-circuit unit, and a first sum of times in which the short-circuit unit is performing the switching in the first ON time is equal to a second sum of times in which the short-circuit unit is performing the switching in the second ON time, the first sum of times being the sum of the respective ON times of all driving signals in the first ON time, the second sum of times being the sum of the respective ON times of all driving signals in the second ON time, characterized in that the pulse dividing unit is configured to divide the driving signal into the plurality of switching pulses using data representing ON times of the plurality of switching pulses and OFF times of the plurality of switching pulses as functions based on numbers of the plurality of switching pulses, and, in the data, the ON time and the OFF time are set such that a peak value of the power supply current is kept within a range from an upper limit threshold to a lower limit threshold smaller than the upper limit threshold within a period shorter than the half cycle of the alternating-current power supply. a rectifier configured to convert alternating-current power from an alternating-current power supply into direct-current power; a short-circuit unit configured to short-circuit the alternating-current power supply via a reactor; and a control unit configured to control a short-circuit operation of the short-circuit unit, the short-circuit operation being a switching, the control unit includes a driving signal generating unit configured to generate a driving signal with which the short-circuit unit performs the switching, and a pulse dividing unit configured to divide the driving signal into a plurality of switching pulses, wherein, in the case that a number of times of the switching of the short-circuit unit during a half cycle of the alternating-current power supply is increased on the basis of a load condition, the control unit is configured to set a first ON time larger than a second ON time, the first ON time being a period until all driving signals are turned off after the first driving signal is turned on as a period from a start of a first switching to an end of all switching during the half cycle of the alternating-current power supply after the increase of the number of times of the switching of the short-circuit unit, the second ON time being a period until all driving signals are turned off after the first driving signal is turned on as a period from a start of a first switching to an end of all switching in the half cycle period of the alternating-current power supply before the increase of the number of times of the switching of the short-circuit unit, and a first sum of times in which the short-circuit unit is performing the switching in the first ON time is equal to a second sum of times in which the short-circuit unit is performing the switching in the second ON time, the first sum of times being the sum of the respective ON times of all driving signals in the first ON time, the second sum of times being the sum of the respective ON times of all driving signals in the second ON time, characterized in that the pulse dividing unit is configured to divide the driving signal into the plurality of switching pulses using data representing ON times of the plurality of switching pulses and OFF times of the plurality of switching pulses as functions based on numbers of the plurality of switching pulses, and, in the data, the ON time and the OFF time are set such that a peak value of the power supply current is kept within a range from an upper limit threshold to a lower limit threshold smaller than the upper limit threshold within a period shorter than the half cycle of the alternating-current power supply.