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ES5340.2 Electric Drive Simulation Board - User’s Guide 49
ETAS FPGA Models
4 FPGA Models
This chapter provides a description of the FPGA models available for purchase for
the ES5340.2 Electric Drive Simulation Board.
4.1 Permanent Magnet Synchronous Machine (PMSM) Model
The ES5340.2-M can be expanded by adding a configurable, FPGA-based
inverter/PMSM model. It maps a 3-phase inverter and a permanent magnet syn-
chronous machine (PMSM) with mechanical system.
With great simulation accuracy, the model takes into account all important phys-
ical effects required for a reliable test, such as saturation and temperature effects
of engine parameters. In particular, this enables very accurate calculation of the
simulated phase currents.
Within the entire model, calculation takes place using floating-point arithmetic
rather than fixed-point arithmetic. As a result, a very high level of accuracy is
obtained over the entire parameter and simulation range. The FPGA-based
model provides an additional, significant reduction of the cycle times of the
model to 850 ns – compared to approx. 10 μs when running a corresponding
model on a Real-Time PC.
Fig. 4-1 The modeled system
Note
If you want to purchase a model separately later, the chapter "Order Informa-
tion and Scope of Delivery" on page 103 provides additional ordering informa-
tion.
6 x
PWM Gate Signal
Vehicle Power Stage
phi_mech
omega_mech
load torque
PMSM
phi_elec
3 x
U_back_emf
P_loss
omega_elec
torque_elec
U_DC
3 x
U_phase
3 x
I_phase
6 x
U_switch
6 x
I_element
I_DC
U_Batt0
E-Motor
I_Batt0 I_DC