The Owls are in contention for the play-offs in the Championship.
The Owls have received lots of praise this term for their attacking philosophy which has moved them into contention for promotion to the Premier League. But the Portuguese has explained that part of the reason that the side have been so successful is the work that the players put in right across the pitch to try and win the ball back when they lose it.
"There are two ways to keep a clean sheet. You close your goal and defend. It is hard to do that in this competition as all the teams play compact and your options to close the goal is very hard," he told the Star.
"Our way is to be positive, try to create goals and do a very strong, organised reaction when we miss the ball. We want all the team to try and win the ball back and create damage to the other team."
The high intensity style has worked perfectly for Wednesday this season. Having just finished in mid-table when Carvalhal took over in the summer, the club may have been forgiven for needing time to adapt to his philosophy.
And while they made a slow start to the campaign, they quickly turned their fortunes around and have arguably been one of the most impressive teams in the division.
And their style has had a positive impact on their results, as with eight games to go, they currently occupy a play-off spot in the table, and have started to create a little bit of daylight between themselves and the chasing pack.