Patent ID: 11967880
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F  Y | IPC H

Claim 6:
7. The power supply circuit of claim 3, wherein
the control unit is configured to perform control by
comparing a first command value with a value of a first carrier wave that has a triangular waveform with an amplitude A and a minimum value M to
turn on the first lower-arm switching element when the first command value is equal to or more than the value of the first carrier wave or
turn off the first lower-arm switching element when the first command value falls below the value of the first carrier wave,

comparing the first command value with a value of a second carrier wave that has an amplitude A and a maximum value M and is always 2M when added up with the first carrier wave to
turn on the second upper-arm switching element when the first command value is equal to or more than the value of the second carrier wave or
turn off the second upper-arm switching element when the first command value falls below the value of the second carrier wave,

comparing a second command value with a value of a third carrier wave that has a triangular waveform with an amplitude A and a minimum value M to
turn on the first upper-atm switching element when the second command value is equal to or more than the value of the third carrier wave or
turn off the first upper-arm switching element when the second command value falls below the value of the third carrier wave, and

comparing the second command value with a value of a fourth carrier wave that has an amplitude A and a maximum value M and is always 2M when added up with the third carrier wave to
turn on the third lower arm switching element when the second command value is equal to or more than the value of the fourth carrier wave or
turn off the third lower-arm switching element when the second command value falls below the value of the fourth carder wave.