pic18f4431 pwm inverter

[nguyenbaquocdung]

help me! pic18f4431 I use microcontroller to control the inverter bridge inverters, while simulating the Proteus is a true sine wave amplitude and frequency, but any increase in voltage and decrease in cycles?I used light bulbs plugged into the light gradually brightened and then gradually fading? they did as well as circuit simulation and run it! to help him see it because the program or hardware because I have nothing wrong?

this is a simulation and program!

 

[john blue]

Try increase your pwm frequency

 

[nguyenbaquocdung]

thank you! I've fix it! for the wrong program! lead to reduced frequency!

My circuit when no load, the pulse transformer in the DC-DC run normally, but when loaded into why it is called?

I do true Sine inverter 50Hz, when inserted into the H-bridge voltage 340vdc then displayed on the same voltage is 310vac? 220VAC is true ?