Patent ID: 11949341
Assignee: TOSHIBA MITSUBISHI—ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The power converter according to claim 1,
wherein the estimation unit calculates the estimation value of the DC voltage Vdc on the DC side on the basis of at least the reference voltage on the DC side, the current value I of the current detected by the current sensor and flowing from the electric motor to the inverter, the capacity C of the smoothing capacitor, and a time constant RC defined on the basis of the capacity C of the smoothing capacitor and a resistance value R of the resistor, and
wherein the control unit controls a change in the DC voltage Vdc on the basis of the calculated estimation value of the DC voltage Vdc on the DC side.