What is DC LINK VOLTAGE

25 次查看（过去 30 天）
abdulwahab ibrahim
abdulwahab ibrahim 2016-3-27
回答： Mohamed Eldin 2022-3-28
Please can anybody really explain to me what dc link voltage really is? Am having problem understanding its relevant in inverters
  1 个评论
Muhammed Fasil
Muhammed Fasil 2016-3-31
Inverter converts DC to AC. So DC voltage is the input required. This DC voltage is modulated to create AC

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Mohamed Eldin
Mohamed Eldin 2022-3-28
Hello Muhammed!
If your application is an electric vehicle with dc machine so I think you don't need the dc link voltage,
If the electric vehicle is provided with AC 3 phase machine, here you should take care about the ripples or the oscillations of the current inside your system.
so the source is dc battery, the dc current follows from the battery through the inverter to convert the dc current to AC one using PWM due to the PWM switching the current will not be dc anymore and he carried some ripples so you need a capacitor to smooth these oscillations
DC current_source = DC link current (rms not continous current) + current follows in the capacitor
please see this video you find some basic information
Bus capacitors for eMobility inverters - YouTube
Mod-08 Lec-28 DC link current and DC capacitor current in a voltage source inverter - YouTube
Have a nice day!
Mohamed

社区

更多回答在  Power Electronics Control

类别

在 Help Center 和 File Exchange 中查找有关 Power Converters 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by