Sorry Tinaa, the link doesn't work (for me at least), about the particles that constitute the solar wind, what I gather is that the poles of the Sun are the point where the electrons enter (I have to check this) and the equator is where the + ions are released (net positive charge, so overall the charges are +, but negative charges can also exist).
http://www.electric-cosmos.org/sun.htm
Here is the page where the electric circuit of the Sun is explained complete with diagrams, but I'm not sure if it answers your question.
Cheers.