Patent ID: 8193747

Claim:
A system for controlling two alternating current (AC) machines via a five-phase PWM inverter module, the system comprising: a first control loop designed to map a first torque command signal, a first speed (ω 1 ) of a shaft, and a DC input voltage to a first d-axis current command signal and a first q-axis current command signal; a second control loop designed to map a second torque command signal, a second speed (ω 2 ) of the shaft, and the DC input voltage to a second d-axis current command signal and a second q-axis current command signal; and a current command adjustment module coupled to the first control loop and the second control loop, and being designed to generate a first adjusted d-axis current command signal, a first adjusted q-axis current command signal, a second adjusted d-axis current command signal and a second adjusted q-axis current command signal, wherein the first control loop is further designed to add the first d-axis current command signal to the adjusted d-axis current command signal to generate a first new d-axis current command signal, and to add the first q-axis current command signal to the first adjusted q-axis current command signal to generate a first new q-axis current command signal, and wherein the second control loop further designed to: add the second d-axis current command signal to the second adjusted d-axis current command signal to generate a second new d-axis current command signal, and to add the second q-axis current command signal to the second adjusted q-axis current command signal to generate a second new q-axis current command signal.