Patent ID: 11894786
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. The method according to claim 1, wherein a formula for calculating the d-axis fifth-order harmonic voltage ud5th is: ud5th=5weLqiq5th+Rsid5th;
a formula for calculating the q-axis fifth-order harmonic voltage is:

uq5th=−5weLdid5th+Rsiq5th;

a formula for calculating the d-axis seventh-order harmonic voltage is:

ud7th=−7weLqiq7th+Rsid7th; and

a formula for calculating the q-axis seventh-order harmonic voltage is:

uq7th=7weLdid7th+Rsiq7th,

wherein, we represents an electrical angular velocity, Rs represents a stator resistance, Ld represents a d-axis inductance parameter, and Lq represents a q-axis inductance parameter.