Electrotechnical Systems

177Electric Machine and Electric Drive Simulation

The models have the following inputs and outputs:

SP—speed reference (rpm) or torque reference (N-m)

Tm—load torque (N-m)

Vcc, Gnd—DC source (+ at Vcc)

Wm—DCM speed (as it was mentioned earlier, the option, for which the motor

speed is dened from outside, is not used)

Motor—vector of the motor states: armature voltage (V), rotation speed (rpm),

armature current (A), excitation current (A), torque (N-m)

Conv—voltage on the terminals of the circuit that consists of the motor and

the smoothing reactor

Ctrl—vector of the controller quantities: current reference, duty cycle, differ-

ence between reference ...