Simulation of three-phase induction motor using nonlinear model predictive control technique

Figures & data

Figure 1. “T” equivalent circuit model of the IM: (a) in d-axis and (b) in q-axis.

Figure 2. (a) Basic MPC control loop and (b) principle of model predictive control (MPC).

Figure 3. Block diagram of the adjustable current fed IM with NMPC.

Figure 4. Block diagram of the adjustable voltage fed IM with NMPC.

Figure 5. (a) Rotor fluxes and speed using MPC with the current-fed control method. (b) Stator currents and excitation frequency using MPC with the current-fed control method.

Table 1. NLP size calculation of OCP (8)

Number of state variables	Number of control variables	Number of subintervals	Number of inequality constraints	NLP size ^4	NLP size ^5
$n$	$m$	$N$	$n_a$	$(N+1)(n+m)$	$(N+1)(n+m)+n_a$
3	3	100	1	606	607

Figure 6. (a) Stator currents and rotor fluxes using MPC with the voltage-fed control method. (b) Rotor speed, stator currents and excitation frequency using MPC with the voltage-fed control method.