Wednesday endured a difficult start to their Championship campaign and they were languishing towards the bottom in the early stages, having won just once in their first five matches.
The Owls have picked up their form since and recorded an impressive five victories from the last seven outings, pushing the team up to seventh in the table.
Fernando Forestieri's penalty was enough to clinch all three points against the Terriers on Sunday and confidence levels are soaring as a play-off place gets closer.
Carvalhal was very happy with the display and he says the players are gelling very well now after what was a tricky and disappointing start to the season.
"We won and we know why, we are doing really well the last six or seven games," he told Sky Sports. "My players have discovered the soul of this team, they are playing compact and we know exactly what we have to do."