A power converter control device for controlling a power converter including a converter that performs AC-DC conversion and an inverter that receives a DC voltage (Vdc) from said converter and supplies a multi-phase AC current (Iv), said power converter control device comprising: a converter control unit configured to output a converter switching signal (Scnv) for determining switching of said converter based on a result of performing comparison between a converter carrier and a converter threshold value (Ccnv) in each of first periods repeated while having a first period length (Tcnv), the converter carrier exhibiting a wave repeated in a cycle corresponding to the first period length (Tcnv), or in a cycle having a length twice as much as the first period length (Tcnv); and an inverter control unit configured to output an inverter switching signal (Sinv) for determining switching of said inverter based on a result of performing comparison between an inverter carrier and an inverter threshold value (Dpwm; Dpwm1, Dpwm2) in each of a pair of second periods (Q1, Q2) synchronized with said converter carrier and repeated while said each of said pair of said second periods having a second period length (Tinv; Tinv1, Tinv2), characterized in that in said first period, first data (Data1) and second data (Data2) are obtained and alternately given to said inverter control unit, said first data (Data1) includes: a first value (Tinv1) indicating a length of time from a start point of time of said first period to a matching point of time as a point of time when said converter carrier takes said converter threshold value (Ccnv); and said inverter threshold value (Dpwm1) corresponding to a first one of said pair of said second periods (Q1, Q2) having said first value (Tinv1) as said second period length (Tinv), and said second data (Data2) includes: a second value (Tinv2) indicating a length of time from said matching point of time (J, t20) to an end point of time of said first period; and said inverter threshold value (Dpwm2) corresponding to a second one of said pair of said second periods (Q1, Q2) having said second value (Tinv2) as said second period length (Tinv). a converter control unit configured to output a converter switching signal (Scnv) for determining switching of said converter based on a result of performing comparison between a converter carrier and a converter threshold value (Ccnv) in each of first periods repeated while having a first period length (Tcnv), the converter carrier exhibiting a wave repeated in a cycle corresponding to the first period length (Tcnv), or in a cycle having a length twice as much as the first period length (Tcnv); and an inverter control unit configured to output an inverter switching signal (Sinv) for determining switching of said inverter based on a result of performing comparison between an inverter carrier and an inverter threshold value (Dpwm; Dpwm1, Dpwm2) in each of a pair of second periods (Q1, Q2) synchronized with said converter carrier and repeated while said each of said pair of said second periods having a second period length (Tinv; Tinv1, Tinv2), characterized in that in said first period, first data (Data1) and second data (Data2) are obtained and alternately given to said inverter control unit, said first data (Data1) includes: a first value (Tinv1) indicating a length of time from a start point of time of said first period to a matching point of time as a point of time when said converter carrier takes said converter threshold value (Ccnv); and said inverter threshold value (Dpwm1) corresponding to a first one of said pair of said second periods (Q1, Q2) having said first value (Tinv1) as said second period length (Tinv), and said second data (Data2) includes: a second value (Tinv2) indicating a length of time from said matching point of time (J, t20) to an end point of time of said first period; and said inverter threshold value (Dpwm2) corresponding to a second one of said pair of said second periods (Q1, Q2) having said second value (Tinv2) as said second period length (Tinv). a first value (Tinv1) indicating a length of time from a start point of time of said first period to a matching point of time as a point of time when said converter carrier takes said converter threshold value (Ccnv); and said inverter threshold value (Dpwm1) corresponding to a first one of said pair of said second periods (Q1, Q2) having said first value (Tinv1) as said second period length (Tinv), and said second data (Data2) includes: a second value (Tinv2) indicating a length of time from said matching point of time (J, t20) to an end point of time of said first period; and said inverter threshold value (Dpwm2) corresponding to a second one of said pair of said second periods (Q1, Q2) having said second value (Tinv2) as said second period length (Tinv). a second value (Tinv2) indicating a length of time from said matching point of time (J, t20) to an end point of time of said first period; and said inverter threshold value (Dpwm2) corresponding to a second one of said pair of said second periods (Q1, Q2) having said second value (Tinv2) as said second period length (Tinv).