High-power low-stroboflash AC direct-connection LED driving method and device and application

The invention discloses a high-power low-stroboflash AC direct-connection LED driving method and device and an application. According to the invention, the method employs the 380V three-phase alternating current to supply power to the AC direct-connection LED driving IC. In a circuit, three phases in the 380V three-phase alternating current are respectively matched with three constant current modules in the AC direct-connection LED driving IC to drive A three-phase LED lamp string; Through the phase characteristic of 380V three-phase alternating current, the frequency of the output power of the AC direct-connection LED driving IC is increased to 300Hz in a superposition mode, and the stroboscopic percentage is reduced by more than 89%, thereby greatly reducing the harm of stroboflash to human health; moreover, due to the increase of the phase number of the input voltage and the increase of the amplitude, compared with the output power of an AC direct-connection LED drive IC driven by a220V single-phase altern