igbt simulator ver.5 manual - fujielectric.co.jp · select igbt module type *p7 ... the thermal...

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IGBT simulator ver.5 manual

October 2011Electronic Devices Business Headquarters

Fuji Electric Co., Ltd.

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ConfidentialContents

Download p3Install software p4Start software p5Flow chart of software p6Select module type p7Input heat sink condition p8Calculate static load p9-12

Portal menu p9Calculation result (static load) p10Parameter sweep mode p11Calculation result (sweep mode) p12

Calculate dynamic load p13-20Portal menu p13 Boundary condition p14Calculating point number p15Set drive condition p16Copy, paste, delete, insert p17Drive condition window p18Other functions p19Calculation result (dynamic load) p20

Graph menu p21-24Change axis range p21-22View coordinates p23Change curve order p24

Thermal resistance model p25Loss calculation of DC-lock p26

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http://www.fujielectric.com/products/semiconductor/technical/design/dg_igbt_sim.html

Download

Design supportIGBT/FWD LossSimulation

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ConfidentialInstall software1. Download zip.

2. Unzip download file andexecute “setup.exe”.

3. Install software according to guidance.

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ConfidentialStart software

(1) Select module:(2) Heat sink:

Input heat sink size.(3) Static load:

Calculate loss and temperatureof static load.

(4) Dynamic load:Calculate loss and temperatureof dynamic load.

1.Double-click “Fuji IGBT Simulator” icon on desktop.

3. Portal menu:

2.Select language, English or Japanese.

(1)Language:Select language.

(2) Help:Access our web site to get IGBT applicationmanual, software manualand latest ver software.

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ConfidentialFlow chart of software

Select IGBT module type *p7

Input heat sink size *p8

In case of thermal design Other case

Static load calculation *p9

Or Dynamic load calculation *p13

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ConfidentialSelect module type

2.Select“Series, Circuit, VCES, IC”from each dropdown listto narrow down module type.

3.Select “Module type” fromdropdown list.

1.Click ”Select module” tab.

Production informationGo to spec. sheet on web

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ConfidentialInput heat sink condition1. Click “Heat sink” tab.

2. Input “Case-heat sink Contact Rth”.*Rth; Thermal resistance.

3. Input “Heat sink parameters”.

-----How to Input parameters------1. “Default value”: You can use prepared

value, and modify prepared value bythis interface.

---------------------------------------------2. “Input yourself”: You can input all

boxes directly.

This interface is invalid.

If heat sink is unknown or you don’t calculate temperature, you can ignore “Heat sink” tab.

Save and load heat sink parameters

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ConfidentialCalculate static load

2. Select Inverter modulation:2 arms, 3 arms, DC

1. Click “Static Load” tab.

3. Select temperature calculation mode:From heat sink to chip;

Ambient temperature (Ta) is constant,calculate heat sink, case, chip temperature

From case to chip;Case temperature (Tc) is constant,calculate chip temperature

4. Set drive condition:

5. Push “calculate” button.

Save and load drive condition parameters

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ConfidentialCalculation result (Static load)

Loss

Break down of lossTemperature

Time: 2cycle

Loss; average of 1cycle

Junction temperature (Tj);

Max. or average of 1cycle

1. Print; Print this window.2. Save image;

Export image file ofthis window.

3. Data export;Export csv file of graph data.

4. Close; Close this window.

Time: 2cycleTime: 2cycle

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ConfidentialParameter sweep mode

1. Check “sweep mode” box.

2. Set blank to varying parameter box.ex. Output current

3. Push “Calculate” button.

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ConfidentialCalculation result (Sweep mode)

Loss

Break down of lossTemperature

Output current

Output currentOutput current

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ConfidentialCalculate dynamic load

2. Select Boundary condition.*See P14

1. Click “Dynamic Load” tab.

4. Set Gate resistance.

5. Set Calc. point number.*See P15

6. Set drive pattern.*See P16

7. Push ”Calculate” button.

3. Select temperature calculation modeFrom heat sink to chip;

Ambient temperature (Ta) is constant,calculates heat sink, case, chip temperature

From case to chip;Case temperature (Tc) is constant,calculates chip temperature

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ConfidentialBoundary condition

Select boundary condition, cyclic or 1shot

1. Cyclic; Calculate as infinite periodic drive pattern

Time [sec]

Ic [Arms]

2. 1shot; Calculate as only one time drive

Time [sec]

Ic [Arms]

Drive pattern

Drive patternInitial condition

0 t1

0 t1-∞ Set initial condition of “1shot” mode

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ConfidentialCalculating point number

Set calculating point number.Calculating point is dividing point of time.Loss is calculated at each point.Decide number in consideration of accuracy and time.

Time [sec]

Ic [Arms]

0 t1

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ConfidentialSet drive condition

Input drive condition sheet.*1. Set effective value in AC, or DC current value.*2. Set modulation rate in AC, or duty in DC.*3. Set inverter modulation mode number,

DC: 1, 2arms: 2, 3arms: 3

*1 *2 *3

Time [sec]0

Ic [Arms]

10 12 20 32 34 40

40100120

Input drive condition of each point.Condition of each interval is calculated by linear.

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ConfidentialCopy, paste, delete, insert

You can copy, paste, delete and insert by short cut or right-click menu.

Ctr + c

Ctr + v

Right-click menu

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ConfidentialDrive condition window

Drive condition window pops up automatically.This window displays diagram of input drive condition.This window helps your input.

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ConfidentialOther functions“Input default value”:

Set default value to the lowest line.

Save and load drive pattern sheet.

“Delete all”:

Delete all of the sheet.

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ConfidentialCalculation results (dynamic load)

Loss

Time

Drive condition

Time

Temperature

Time

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ConfidentialGraph menu-change axis range

You can click x-axis and y-axis to change axis range.

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ConfidentialGraph menu-change axis range

You can change axis range by mouse drag action.

Right-click, select “Full range” to display full range.

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ConfidentialGraph menu-view coordinates

You can click graph region to show x,y coordinate.(Black cross)Click long time to show x,y coordinate of curve point.(Red cross)

Right-click, select “Clear coordinates”to clear them.

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ConfidentialGraph menu-change curve order

You can click curve name above graph to change curve display order.Clicked curve is moved to top.

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ConfidentialThermal resistance model

Tj(IGBT)

Rth(c-f)

Tj(FWD)

Rth(j-c)(IGBT)

Rth(f-a)

1 arm

Tc

Tf

･･･

Ta

6 arm

Rth(j-c)(FWD)

PFWD

Ploss_f

Ploss

PIGBT

Tj(IGBT) ： IGBT chip junction temperatureTj(FWD) ： FWD chip junction temperatureTc ： Module case temperatureTf ： Heat sink surface temperatureTa： Ambient temperature

Rth(j-c)(IGBT) ： Thermal resistance betweenIGBT chip and case

Rth(j-c)(FWD) ： Thermal resistance betweenFWD chip and case

Rth(c-f) ：Thermal resistance betweencase and heat sink

Rth(f-a) ：Thermal resistance betweenheat sink and ambient air

The thermal resistance model used for the temperature rise calculation is shown in following figure.

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ConfidentialLoss calculation of DC-LockThe current path at DC-lock state is shown in the figure. The output current is a DC current (Ic).In this state, IGBT (U-arm) and FWD (X-arm) power losses are calculated.

Ic

Ic/2

uvw

U

X

V

Y

W

Z

Psat = Ic×Vce(@Ic)×Duty

Pf = If×Vf(@If)×(1-Duty)

Pon = Eon(@Ic)×fc Poff= Eff(@Ic)×fc

Prr= Err(@If)×fc

The power loss can be calculated from following equations.IGBT power loss (W)

FWD power loss (W)

FWD

IGBT