DSP-based solar semiconductor illumination system and control method thereof

Abstract

The invention discloses a DSP-based solar semiconductor illumination system and a control method thereof. The system comprises a primary circuit and a control circuit. The primary circuit includes a solar battery, a DC-DC converter, a battery, an LED drive circuit and an LED lamp group. The control circuit includes a maximum power point tracking (MPPT) control circuit and an LED drive control circuit; the LED drive control circuit consists of inductors L1 and L2, a capacitor C, a diode D and an MOS tube Q1; and the MPPT control circuit contains a detection circuit, a DSP and a PWM drive circuit. The LED drive control circuit is an OCC-based CUK converter. The provided DSP-based solar semiconductor illumination system has advantages of high integration and good stability and the like.

Description

technical field [0001] The invention relates to a DSP-based solar semiconductor lighting system and a control method thereof. Background technique [0002] With the increasing level of science and technology, the increasingly serious energy crisis and rising oil prices, conventional energy is no longer suitable for the rapid development of social economy, and the development and utilization of new energy is of great significance. Since 2005, the annual growth rate of the world's solar energy market has been 23%, while the annual growth rate of petroleum in the same period is only 1.8%, a difference of 10 times. However, coal, petroleum and uranium have brought severe environmental pollution that is difficult to overcome. . The world's photovoltaic industry has developed rapidly. From the last century to the beginning of this century, photovoltaic power generation has gradually shifted from solving the power supply in special fields to serving as an important supplement to c...

AI Technical Summary

Problems solved by technology

[0003] Existing designs (see Figure 1-2 ) has many defects, such as high cost, high energy consumption, low efficiency, large current fluctuations, and weak anti-interference, etc., which cannot meet the work requirements. For example, the drive circuit uses an inductive current signal detection loop and a multiplier, resulting in complex structure and circuit cost. High, and the nonlinear distortion of the multiplier greatly increases the harmonic content of the system current

In the existing technologies of solar photovoltaic MPPT control, such as constant voltage tracking method, intermittent scanning method, disturbance observation method, etc., there are common problems such as low efficiency, low degree of intelligence and automaticity, and short battery life.

Images