Jovanovski was given a walkover victory in the previous round due to Shahar Peer's withdrawal and she made full use of the rest to ease to a 6-1 7-5 triumph over her Slovakian opponent.
Austrian fourth seed Yvonne Meusburger joined the Serbian in the last four courtesy of a 6-2 6-4 success over Yaroslava Shvedova of Kazakhstan.
Johanna Konta missed out on a first ever WTA Tour semi-final after withdrawing against Johanna Larsson.
The British number three took the first set 6-2 against her Swedish opponent, but Larsson levelled by taking the second 6-3, with Konta pulling out.
Home favourite Shuai Zhang completes the semi-final line-up following a 6-4 7-6 (12/10) win over Spaniard Anabel Medina Garrigues.