Simulink space vector PWM simulation

Question

chen dunzhi 2015-8-29

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/237633-simulink-space-vector-pwm-simulation

编辑： chen dunzhi 2015-9-1

采纳的回答： MUHAMMED FASIL

reference_generation.mdl

The model:

Here is what i intend to do.

Generate three phase voltage
Do a alpha beta transformation
Do a Cartesian to Polar transformation
Check the angle output
Since the three phase vector rotates counter-clock wise, I am supposed to get sequence of angle moving from zero to 180 degrees and drops to -180（in no time!） and moves up and repeats itself.But result is that the angle sometimes reaches 172 degrees and turns around,not reaching 180 degrees.Waht is wrong? help!

Here is the result

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Answer 1

MUHAMMED FASIL 2015-8-31

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https://ww2.mathworks.cn/matlabcentral/answers/237633-simulink-space-vector-pwm-simulation#answer_190817

Please resubmit ur valid mdl file or send me at tpfasil2007@gmail.com

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chen dunzhi 2015-9-1

编辑：chen dunzhi 2015-9-1

Thank you. The problem is solved.

The time step for simulation is not small enough, leading to insufficient accuracy.

And I changed the time step from 0.01 to 0.00002 and the result is just as expected.

Thank you again!

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Answer 2

MUHAMMED FASIL 2015-8-30

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/237633-simulink-space-vector-pwm-simulation#answer_190738

Try with abc-AlphaBeta simulink block. Or submit ur mdl file

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chen dunzhi 2015-8-31

编辑：chen dunzhi 2015-8-31

The mdl file is there named reference_generation.mdl And i checked with abc-AlphaBeta block the result is the same. Does it have anything to do with the solver that Simulink uses? Because there is a warning:

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