| Abstract |
High performance induction machine control is usually implemented using field oriented control
(FOC) or direct torque control (DTC). These strategies both have their strengths and weaknesses. The
concept of instantaneous power control (IPC) has been used previously in power compensators and to
control the voltage on the DC link of drive systems, but it is a new concept for the control of
induction machines. By simultaneously controlling the instantaneous real and imaginary power
flowing into the machine it is possible to control the machine’s instantaneous torque and flux. The
algorithm to achieve this is more robust to machine parameter inaccuracies compared to the classical
field oriented control, and is capable of similar dynamic performance to field oriented and direct
torque control. This paper develops the IPC algorithm, and then presents simulation results of its
performance. Special emphasis is given to the effects of practical issues such as parameter accuracy
and inverter dead time on the performance of the algorithm. |
