A new-type wind-solar complementary controller applied to round frame wind generators was designed and realized. This wind generator could realize real-time adjustment of paddle angle according to wind power so as to reach high safety and sustainable power generation effect even under a hurricane. The controller was integrated with a stepping motor driver. Integral separation PID control algorithm was used to drive stepping motor and adjust paddle angle so as to realize closed-loop control of generator velocity. Three-phase charging method was used to realize three-phase charging of storage battery so as to effectively lengthen its service life. MPPT algorithm was used to realize wind-solar complementary maximum power point tracking, thus improving the controller efficiency. STM32F103RBT6 chip-based wind-solar complementary controller was designed to complete controller hardware design and software programming. The system prototype was fabricated and experimented, and the experiment indicated that this controller could realize generator velocity control and battery charging-discharging functions with high efficiency and steady and reliable operation.
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