Abstract: A device includes a bidirectional switch circuit 10, a control unit 20 that performs virtual AC/DC conversion processing to acquire a plurality of interline voltage generation sections according to a plurality of modes divided according to a magnitude relation between voltages in each phase and that generates a switching pattern of the bidirectional switch circuit 10 to perform virtual DC/DC conversion processing corresponding to the plurality of interline voltage generation sections based on a second carrier waveform pattern CW2 according to the plurality of modes and a signal level G1 of a P-phase, a current setting unit 50 that inputs a current direction and an amount of current that flows in a power line LU, a current detection unit 51 that detects the current direction and the amount of current of the power line LU, and a current adjustment unit 52 that increases and decreases the signal level G1.

Abstract: A configuration for the object includes: a bidirectional switch circuit which turns ON/OFF supply of input three-phase AC power to a load LD; and a control unit which performs virtual AC/DC conversion processing in which a plurality of interline voltage generation sections selecting two phases among the input three-phase AC power are obtained according to a plurality of modes classified according to a magnitude relationship between voltages of respective phases in the input three-phase AC power within a predetermined switching cycle and generates a switching pattern of the bidirectional switch circuit so as to perform virtual DC/AC conversion processing corresponding to the plurality of interline voltage generation sections from a second carrier waveform pattern according to the plurality of modes and a U-phase control signal and a V-phase control signal corresponding to a phase of an output side.

Abstract: Disclosed is a matrix converter that directly converts input three-phase AC power into three-phase AC power and outputs the converted three-phase AC power to a load. The matrix converter includes: a bidirectional switch circuit that switches on or off the supply of the three-phase AC power to the load; and a controller that performs different virtual AC/DC conversion processes according to a plurality of modes which are divided depending on magnitude correlation between respective phase voltages in the input three-phase AC power, with respect to the input three-phase AC power, selects two phases from the input three-phase AC power, and generates switching patterns of the bidirectional switch circuit so as to perform the different DC/AC conversion processes according to the plurality of modes with respect to line voltages of the two selected phases.

Abstract: A device includes a bidirectional switch circuit 10, a control unit 20 that perforins virtual AC/DC conversion processing to acquire a plurality of interline voltage generation sections according to a plurality of modes divided according to a magnitude relation between voltages in each phase and that generates a switching pattern of the bidirectional switch circuit 10 to perform virtual DC/DC conversion processing corresponding to the plurality of interline voltage generation sections based on a second carrier waveform pattern CW2 according to the plurality of modes and a signal level G1 of a P-phase, a current setting unit 50 that inputs a current direction and an amount of current that flows in a power line LU, a current detection unit 51 that detects the current direction and the amount of current of the power line LU, and a current adjustment unit 52 that increases and decreases the signal level G1.

Abstract: A configuration for the object includes: a bidirectional switch circuit which turns ON/OFF supply of input three-phase AC power to a load LD; and a control unit which performs virtual AC/DC conversion processing in which a plurality of interline voltage generation sections selecting two phases among the input three-phase AC power are obtained according to a plurality of modes classified according to a magnitude relationship between voltages of respective phases in the input three-phase AC power within a predetermined switching cycle and generates a switching pattern of the bidirectional switch circuit so as to perform virtual DC/AC conversion processing corresponding to the plurality of interline voltage generation sections from a second carrier waveform pattern according to the plurality of modes and a U-phase control signal and a V-phase control signal corresponding to a phase of an output side.

Abstract: Disclosed is a matrix converter that directly converts input three-phase AC power into three-phase AC power and outputs the converted three-phase AC power to a load. The matrix converter includes: a bidirectional switch circuit that switches on or off the supply of the three-phase AC power to the load; and a controller that performs different virtual AC/DC conversion processes according to a plurality of modes which are divided depending on magnitude correlation between respective phase voltages in the input three-phase AC power, with respect to the input three-phase AC power, selects two phases from the input three-phase AC power, and generates switching patterns of the bidirectional switch circuit so as to perform the different DC/AC conversion processes according to the plurality of modes with respect to line voltages of the two selected phases.

Abstract: A three-phase rectifier converts three-phase alternating current (AC) power supplied from a three-phase AC power supply into direct current (DC) power. The three-phase rectifier includes a full-wave rectifier circuit, a bidirectional switch circuit, and a controller. The full-wave rectifier circuit rectifies three-phase AC power to DC power. The bidirectional switch circuit switches on and off inputs of respective phases from the three-phase AC power supply to the full-wave rectifier circuit. The controller detects voltages of the respective phases of the three-phase AC power supply, generates switching patterns for the respective phases to switch the bidirectional switch circuit on and off based on the detected voltages of the phases, and controls switching of the bidirectional switch circuit based on the switching patterns.

Abstract: It is determined which of six continuous sections having different magnitude correlation of signal amplitude of each phase of an input three-phase signal a section is. Predetermined subtraction is performed between respective phases in the section, to obtain a normalized amplitude value normalized in the section, using the subtraction result. The normalized amplitude value is converted to a vector phase for one cycle based on a predetermined phase and output corresponding to the determined section.

Abstract: A three-phase rectifier converts three-phase alternating current (AC) power supplied from a three-phase AC power supply into direct current (DC) power. The three-phase rectifier includes a full-wave rectifier circuit, a bidirectional switch circuit, and a controller. The full-wave rectifier circuit rectifies three-phase AC power to DC power. The bidirectional switch circuit switches on and off inputs of respective phases from the three-phase AC power supply to the full-wave rectifier circuit. The controller detects voltages of the respective phases of the three-phase AC power supply, generates switching patterns for the respective phases to switch the bidirectional switch circuit on and off based on the detected voltages of the phases, and controls switching of the bidirectional switch circuit based on the switching patterns.

Abstract: It is determined which of six continuous sections having different magnitude correlation of signal amplitude of each phase of an input three-phase signal a section is. Predetermined subtraction is performed between respective phases in the section, to obtain a normalized amplitude value normalized in the section, using the subtraction result. The normalized amplitude value is converted to a vector phase for one cycle based on a predetermined phase and output corresponding to the determined section.

Abstract: It is determined which of six continuous sections having different magnitude correlation of signal amplitude of each phase of an input three-phase signal a section is. Predetermined subtraction is performed between respective phases in the section, to obtain a normalized amplitude value normalized in the section, using the subtraction result. The normalized amplitude value is converted to a vector phase for one cycle based on a predetermined phase and output corresponding to the determined section.

Abstract: A boost chopper circuit converts AC power to DC voltage and supplies the DC voltage to a load. The boost chopper circuit includes a switching element and a reactor. A controller ON/OFF controls the switching element based on a comparison result in an interval of the former half of a half cycle of the AC power between a detected input current by a input current detector and a current instruction value of a modeling waveform obtained by reducing a harmonic component of a predetermined order from the current waveform.

Abstract: It is determined which of six continuous sections having different magnitude correlation of signal amplitude of each phase of an input three-phase signal a section is. Predetermined subtraction is performed between respective phases in the section, to obtain a normalized amplitude value normalized in the section, using the subtraction result. The normalized amplitude value is converted to a vector phase for one cycle based on a predetermined phase and output corresponding to the determined section.

Abstract: A boost chopper circuit converts AC power to DC voltage and supplies the DC voltage to a load. The boost chopper circuit includes a switching element and a reactor. A controller ON/OFF controls the switching element based on a comparison result in an interval of the former half of a half cycle of the AC power between a detected input current by a input current detector and a current instruction value of a modeling waveform obtained by reducing a harmonic component of a predetermined order from the current waveform.