Author Topic: Grid Tied inverter for 200W  (Read 1131 times)

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Offline ocsetTopic starter

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Grid Tied inverter for 200W
« on: April 06, 2018, 05:28:51 am »
Hello,
I have simulated a grid tied inverter by simply having an isolated 400V supply….then having  a   PWM with a sinusoidally varying duty cycle which switches via a bridge  into a Filter to filter out the switching harmonics and leave behind the 50Hz waveform.
Would you say this is a good modus operandi?
Its as in the attached simulation   in LTspice
 

Offline Phoenix

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Re: Grid Tied inverter for 200W
« Reply #1 on: April 06, 2018, 06:23:19 am »
Is this a real product you are proposing? I mean I've done this plenty of times in simulation just guessing magnitude and phase of the sinusoid but only as a quick hack to test something else. All real grid tied inverters I've developed use sinusoidal current regulation from a reference real+reactive quantity.

That being said micro inverters may also use a current source inverter derived topology to avoid the need for a high voltage DC bus.
 
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