By Christoph Steitz and Victoria Waldersee (Reuters) -Siemens Energy reported first-quarter preliminary financial results on Tuesday that beat market expectations, saying it continued to see a positive market environment as the power equipment maker recovers from a major wind turbine crisis. Frankfurt-listed shares in the company rose 5.2% following the news, which caps months of negative announcements around the group’s onshore wind turbine business, where quality issues caused a major sell-off in its shares. The company reported a 12.6% rise in first-quarter revenue on a comparable basis to …