February 2013
Intermediate to advanced
440 pages
11h 23m
English
book
Control of Power Inverters in Renewable Energy and Smart Grid Integration
by Qing-Chang Zhong, Tomas Hornik
Content preview from Control of Power Inverters in Renewable Energy and Smart Grid Integration
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
11
Classical Control of a Neutral Leg
In this chapter, a controller is developed for the independently-controlled neutral leg by using classical control techniques to provide a neutral line for a 3-phase 4-wire inverter. The neutral point can be steadily regulated at the mid-point of the DC link by a simple controller, involved in voltage and current feedback, even when the three-phase converter system (mostly, the load) is extremely unbalanced. The achievable performance is analysed quantitatively and the parameters of the neutral leg are determined accordingly.
11.1 Mathematical Modelling
Here, the linear model of the neutral leg is developed in a slightly different way from that in (Zhong et al. 2006) in order to gain some insightful understanding about the neutral leg, by ignoring the resistance of the inductor and assuming that the capacitors are the same.
Assume that the voltages across the capacitors CN with respect to the neutral point N are V+ and V−, respectively. Then the DC link voltage is
and the shift of the neutral point is1
According to Kirchhoff’s laws, the following equations are satisfied:
Assume that the average of the firing pulse during a switching period ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.