Patent ID: 11923759
Assignee: TOSHIBA MITSUBISHI—ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The driving method for the power conversion device according to claim 6, the driving method comprising:
calculating a base switching pattern so as to satisfy conditions for
ensuring the calculated modulation factor,
eliminating the harmonic components for the respective orders of the output voltage of the inverter, and
ensuring the predetermined value for the phase difference between the predetermined adjacent switching phases; and

correcting the switching phases included in the calculated base switching pattern so that, regarding regions where current flows to the neutral point, an absolute value of a sum of a current integral value at the neutral point in the region where a voltage difference between the positive-side capacitor and the negative-side capacitor increases and a current integral value at the neutral point in the region where the voltage difference decreases, becomes equal to or smaller than a predetermined value, thereby determining the switching pattern.