Product Introduction The variable frequency drive for DC fans features quiet operation, high efficiency, parameter self-identification, and multi-scenario, cross-industry applications. Its core advantages include: - Fast startup: Closed-loop convergence within a single cycle; - Startup at 700rpm (both forward and reverse directions), with energy efficiency improved via over-modulation and field-weakening control; - Field-weakening compensation control; - Parameter self-identification for quick adaptation to various motors; - High efficiency and strong versatility; - Parameter identification accuracy: ±5%.