simplorer-maxwell联合仿真实例

T1T2T3T4

Co-simulation with Maxwell Technical Background

The co-simulation is the most accurate way of coupling the drive and the motor

model. The advantage of this method is the high accuraty, having the real

inverter currents as source in Maxwell and the back emf of the motor on the

inverter currents as source in Maxwell, and the back-emf of the motor on the

inverter side.

The transient-transient link enables the use to pass data between Simplorer and

Maxwell during the simulation:

Maxwell2D and Maxwell3D can be used

Simplorer and Maxwell will run altogether

Simplorer is the Master, Maxwell is the slave

At a given time step, the Winding currents and the Rotor angle are passed

from Simplorer to Maxwell, the Back EMF and the Torque are passed from

Maxwell to Simplorer

The complexity of the drive system and of the mechanical system is not

The complexity of the drive system and of the mechanical system is not

limited

Insights on the coupling Method

The Simplorer time steps and the Maxwell time steps don’t have to be the

same. Usually, Simplorer requires much more time steps than Maxwell.

Assume the current simulation time is t

Simplorer, based on the previous time steps, gives a forward meeting time

t1to Maxwell where both simulators will exchange data. Between t0and t1,

both code run by themselves.

At t

1, both codes exchange data. If during the t0-t1period, some event

appears on Simplorer side (state graph transition, large change of the

pp p(g p,g g

dynamic of the circuit), Simplorer will roll back to t0and set a new forward meeting time t1’, t1’< t1.

the Basic Elements > Circuit > Semiconductors System Level library

Co-simulation with Maxwell Simplorer Schematic

We use a control signal for each igbt. IGBT1has the igbt1control signal (you

need to uncheck the use Pin button). Name the control signals of IGBT2to

IGBT6 accordingly.

Follow the naming as below

Co-simulation with Maxwell Simplorer Schematic

The reference waveforms are implemented using time functions: pick the Sine

Wave in the Basic Elements > Tools > Time Functions library.

Put 3 Sine Wave blocks on the schematic, with the parameters as above

Add a Triangular wave time function block

The switching of the IGBTs is done through a state graph that will compare the

reference wave forms and the chopper signal

Co-simulation with Maxwell Simplorer Schematic

Simplorer Schematic

In the Basic Elements > States library, pick up two STATE_11, two TRANS

Build the graph below then make two additional copies to have 3 circuits, one for

each phase

For the first state graph, we will monitor IGBT1and IGBT2

Co-simulation with Maxwell Maxwell in Simplorer

In order to use a Maxwell model in co-simulation with Simplorer, the user just

needs to do a couple of modifications on the Maxwell side.

Right mouse click on the Maxwelldesign name and select copy

Right mouse click on the Project name and select paste

Rename the copied design name in 2_Maxwell_Simplorer

Co-simulation with Maxwell Maxwell in Simplorer

Right mouse click on Model, and select Symmetry Multiplier

Go to the Advanced Product Coupling tab and enable transient-transient link with

Simplorer. That will let Maxwell know that everything linked to rotor position and winding information are to be taken from Simplorer

Go to the winding definition under the Excitation tab, Right mouse click on

PhaseA, then select Properties

Co-simulation with Maxwell Maxwell in Simplorer

For each winding, you need to enter that you want the current information to be

read in Simplorer.

Select External in the ‘Type’ pull down menu

Make sure that the initial current is 0

Make sure that the initial current is0

Repeat the same operation for PhaseB and PhaseC.

That’s all for the Maxwell part.

Save and close the Maxwell project.

Make sure to know where the project is saved on the disk

Make sure to know where the project is saved on the disk

Co-simulation with Maxwell Simplorer Schematic

Go to Simplorer Circuit > Subcircuit > Maxwell Component > Add Transient

Cosimulation

In the Transient-Transient coupling window, open the link File aera, and select

the Maxwell project

Co-simulation with Maxwell Simplorer Schematic

Maxwell is opened and loads the project

On the Transient-Transient link Simplorer window, the project information are

loaded

Select 2D for the Design type, and choose the design 2_Maxwell_Simplorer

In the Options tab, select Pin Description and click OK.

Co-simulation with Maxwell Simplorer Schematic

Place the Component on the schematic, nearby the phase resistances

The component has 8 pins : 2 pins for each phase and 2 mechanical pins for the

rotor

We need to increase the symbol size. In the Definitions> Components tab of the

Simplorer project window, rigth mouse click on MxTranTranData2 (the

component name) and select Edit Symbol

Co-simulation with Maxwell

Simplorer Schematic

The Symbol Editor window pops up

Click on the motor image, and move the image away in order to have access to g g y

the symbol footprint

Co-simulation with Maxwell

Simplorer Schematic

Enlarge the footprint to the desired size.

The Pins should also be moved, as well as the pin description text zones

The motor image needs to be resized and re centered

The motor image needs to be resized and re centered

Co-simulation with Maxwell Simplorer Schematic

Update the project, using the icon,just above the project name

Once the project is updated, double click on the schematic name, then wire the

motor to the phase resistances. PhaseA_out, PhaseB_out and PhaseC_out

pinsare linked together in this example

Co-simulation with Maxwell Simplorer Schematic

A constant speed is used. Go to the Component tab, in the Basic Elements >

Physical Domains > Mechanical > Velocity –Force –Representation >

Rotational_V folder, choose the V_ROT: Angular Velocity Source

Rotational V folder choose the V ROT:Angular Velocity Source

Enter 4500rpm and link this component to the MotionSetup1_out pin

Link the MotionSetup1pin to the (mechanical) ground

Note: Simplorer allows you to have much more complicated mechanical systems

Co-simulation with Maxwell Simplorer Simulation

Before simulating, the outputs data that will be available in Simplorer need to be

defined. Open the Output Dialog

By default, most of the common outps are saved by default. Browse to the FEA1

folder, then select the desired outps from Maxwell2D that you want to keep, then click on OK