X hits on this document

PDF document

Master of Science Thesis in Electric Power Engineering - page 76 / 114

353 views

0 shares

3 downloads

0 comments

76 / 114

VOLTAGE ORIENTED CONTROL – IMPLEMENTATION

Figure 4.6 : How to force IGBTs OFF (complete diagram : APPENDIX G. Figure 0.43) The switches are activated by the “GO” signal in our model.

  • If GO = 0

  • If GO = 1

  • Output = 0

  • Output = Ubac range [0;1]

  • IGBT = OFF

  • IGBT = ON

4.4 Running an experiment

To run an experiment we need to introduce some important points that are : STOP/PAUSE/RUN mechanism, simState variable, Initialization and Termination value, how to build a model and which parameters should we used, and how to use Control Desk software. A tutorial is also available in [37] , and we also advice to use the dSpace Help in Simulink (more useful than the dSpace books).

SIMSTATE VARIABLE

The simState variable is an internal variable that allows to read or set the simulation state of the application [33] . This variable is created when the system is built (see how to build a model in the following).

It can take the following value (Table XXX).

Simulation State

simState variable

STOP

0

PAUSE

1

RUN

2

Table 4.3 : simState values

STOP/PAUSE/RUN MECHANISM

The STOP/PAUSE/RUN mechanism depends on the simState variable. By controlling it, you can stop, pause or run your experiment. In our case, we chose to control it via Control Desk. When your system is built and your variable description file (“.sdf”) is opened in Control Desk (see next paragraph), you can find this variable in the main group of variable.

The following figure shows a part of control panel in Control Desk, the simState is linked to “Push Buttons”.

67

Document info
Document views353
Page views361
Page last viewedFri Dec 09 08:34:47 UTC 2016
Pages114
Paragraphs2263
Words17018

Comments