New Zealand will be captained by a leadership group in London which includes Michelsen, Sam Charlton, Anita McLaren and Liz Thompson.
Head coach Mark Hager said the tournament against some of the world's best sides provides the last chance for players to step up for Olympic selection.
"We have built a great deal of depth within our squad and Olympic selection is still wide open. There were plenty of players who performed well in Darwin and that, along with Champions Trophy will be taken into consideration," Hager said.
"Champions Trophy will be a good gauge of where we're at, there are no easy games and that will help identify any weaknesses we need to tighten up in the last phase before Rio.
"We have proven that we can win big games against tough opposition so it's now about continuing to progress to ensure we peak at the right time."
New Zealand women's team for the Champions Trophy starting in London on June 19:
Goalkeepers: Sally Rutherford (Midlands), Amelia Gibson (Auckland)
Defenders: Liz Thompson (Auckland), Brooke Neal (Northland), Emily Gaddum (Central), Rose Keddell (Midlands), Sam Charlton (Midlands).
Midfielders: Anita McLaren (Capital), Kayla Whitelock (Central), Ella Gunson, Stacey Michelsen (Northland), Pippa Hayward (Canterbury),
Strikers: Sophie Cocks, Olivia Merry (Canterbury), Charlotte Harrison (Auckland), Petrea Webster, Kirsten Pearce (North Harbour), Gemma Flynn (Midlands).
New Zealand's schedule (NZT):
June 19: v Netherlands (world No 1), 3am
June 20: v Australia (3), 3am
June 22: v Britain (6), 7am
June 24: v Argentina (2), 1.30am
June 26: v United States (7) 1am.
June 27: Playoff games.