Improved variable step size perturbation method MPPT control device and method and application system thereof
A control device and technology of variable step size, applied in control/regulation systems, output power conversion devices, circuit devices, etc., can solve the problem that the steady-state performance and dynamic performance of the fixed-step algorithm cannot be balanced, the convergence speed is slow, and the power consumption Large loss and other problems, to achieve the effect of smooth and fast tracking process, good stability and accuracy
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[0015] The present invention provides an improved MPPT control device, method and application system of the variable step size disturbance method. In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples . It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0016] Such as figure 1 As shown, an improved variable step size MPPT control device and application system, including PV array, voltage conversion unit, voltage detection device, current detection device, MPPT control module based on single-chip microcomputer, using processing circuit, duty cycle control circuit, Storage battery and load, the voltage conversion unit includes capacitor C1, inductor L1, switch tube Q1, diode D1 and capacitor C2; both e...
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