Free style electric generating apparatus of river water stream

Abstract

The invention relates to a free type power generating unit for river flow, which belongs to the technical field of renewable energy source power generation. The generating unit comprises a propeller hydroelectric generating set, a motor output connector, an inverter, an inverter output connector, an auxiliary circuit module, a damping load and an electric power parameter sensing module. The river flow flows into from a prepositive propeller of the propeller hydroelectric generating set, sequentially passes through a main propeller and a hydraulic generator, and flows out from the rear end of a cylindrical shell. The main propeller converts hydraulic energy into rotative moments of the main propeller and a rotating main shaft under effective push of water flow, and the main propeller drives a rotor of the hydraulic generator to rotate; a three-phase alternating current electric power is formed at an output interface and is outputted; and the three-phase alternating current electric power is transmitted to the inverter for realizing synchronical following of electric power parameters outputted by the hydraulic generator with electric fence parameters and controlling the operation of the device under the decision of the auxiliary circuit module. The generating unit improves converting efficiency of hydraulic energy, and realizes the limitation on extra-high rotating speed of a propeller hydraulic generator.

Description

technical field [0001] The invention relates to a power generation device in the field of electric power technology, in particular to a river channel water flow free type power generation device. Background technique [0002] Currently widely used hydroelectric generating units, the hydroturbines can be roughly divided into two categories: impact turbines and impact turbines. The runner of the impact turbine is impacted by the water flow and rotates, and the pressure of the water flow remains unchanged during the working process, mainly due to the conversion of kinetic energy; the runner of the impact turbine is rotated by the reaction force of the water flow, and the pressure of the water flow during the working process Both energy and kinetic energy are changed, but mainly the conversion of pressure energy. Pelton turbines can be divided into two types according to the flow direction of the water flow: the cutting type (also known as the water bucket type) and the oblique...

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Problems solved by technology

This technical solution is feasible, but there are obvious technical defects: 1. It is necessary to have auxiliary facilities for collecting water in the river channel to be built in cooperation with the power generation ship, which will inevitably limit the scope of application of this technology; 2. The integral circulation plate chain wheel type water turbine It is obviously a relatively backward hydraulic energy conversion machine, because the hydraulic characteristics of its extremely simple plate chain wheel mechanical structure limit the improvement of water energy conversion efficiency; 3. Its generator and its transmission and control equipment cannot be realized Optimal Tracking of Power Grid Connection

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