Wind and solar hybrid generating system based on Z source

Abstract

The invention relates to a wind and solar hybrid generating system based on a Z source, belonging to the field of new energy generation and aiming to provide users with a safe and stable power sourceby utilizing wind energy and solar energy common in nature. The invention adopts a pressure-boosting device based on a Z source circuit structure and a tracking control strategy based on DSP to achieve a variable-step perturbation observation method. The wind and solar hybrid generating system based on the Z source comprises a charging and discharging controller, an energy-storing accumulator andan inventor. A wind and solar hybrid controller converts wind energy captured by a wind-driven generator into a direct current by utilizing a rectifier; and the energy-storing device (accumulator) ischarged by the direct current and solar energy captured by a solar panel; the inventor releases electric energy stored in the accumulator and stably outputs an alternating voltage of 220V by a certaincircuit and a control method to provide for load use. The system has simple structure and less hardware and effectively improves the working efficiency.

Description

technical field [0001] The invention relates to a power generation system, in particular to a Z-source-based wind-solar complementary power generation system. Background technique [0002] In the remote areas of Northwest my country, the land is vast and sparsely populated, and it is unreasonable from an economic point of view to introduce power grids to every herdsman's family. In addition, there are many islands in the southeast of our country, and it is impossible to build a large-scale power grid in these small island areas. Therefore, the problem of power supply in these areas has become increasingly prominent. Fortunately, these areas generally have abundant renewable energy such as solar energy or wind power. It is very economical to promote the power supply system of these renewable energy sources on a large scale in remote areas. [0003] Solar and wind energy are naturally complementary. In summer, the sunshine is generally strong and the solar energy is abundan...

AI Technical Summary

Problems solved by technology

[0004] In the Chinese patent 200710046856 "Multi-wind turbine parallel wind-solar complementary grid-connected power generation system", the inverter part adopts a grid-connected inverter. The boost circuit of the inverter includes a microprocessor, a boost circuit A and a boost circuit B. Full bridge structure, complex structure, many hardware, low efficiency

Images