Micro Hydropower

Generally, the installed capacity below 100KW is called micro-hydro system, DLLD can supply various tyes of micro-hydraulic turbine and generator units to satisfy the demand from electric power consumers in small load areas. 

Besides, DLLD Power also has complete electromechanical equipment solutions for mini and small hydropower plants up to 10MW, through our recommended partners in China.

You can select the suitable type of the micro-hydraulic turbine based on local water head and flow rate as above curve shows, DLLD could design and custom make special turbines for specific site conditions. Generally, there are mostly below types turbine are used for micro hydropower system, such as  Turgo turbine (or Pelton turbine) for high head sites, Tubular turbine, Francis turbine and crossflow type turbine for medium head sites, and axial flow turbine like Propeller, Kaplan, and also are suitable for low head sites. We also custom make Barrel type turbine, Submersible type turbine and Floating type turbines for special site conditions, like canal, mills, fish farms, stream and creek hydropower application. 

In additional, to help you understand our hot sales micro hydro system better, we summarize the conventional models below 30kW for your reference.

If you have any specific project to proceed, please do not hesitate to contact us freely to searching for best selection based on your site condition, please send your basic data such as Net Head (m), Design Flow (l/s), Required output Power (kW), Required Voltage(V), Frequency (50Hz or 60Hz), Off-Grid or On- Grid etc as more more clear as possible. Our general inquiry email address is info@dlldpower.com

Useful Links before Selection:

  1. https://www.energy.gov/energysaver/microhydropower-systems
  2. https://www.energy.gov/energysaver/planning-microhydropower-system

Turgo turbine has the key feature of simple structure, small size, light weight, high efficiency, easy install and reliable perform. It is very suitable for small load in mountain areas off grid system. Turgo turbine have two different structures single nozzle and double nozzles. The runner of a Turgo turbine is made of outer ring, inner ring and buckets. Inlet valve, turbine, Generator (rare earth permanent magnet synchronous generator) and control panel are mounted together. Please see the below detail diagram and photos of the Turgo Series.

The Tubular type turbine is made of water chamber, runner, distributer and draft tube,which suits to low water head and large water flow, could be design as both vertical type and horizontal type. Please see the below detail diagram and photos of the GD Series.

Francis type turbine is suitable for water power station with medium or low water head and flow rate. It is divided into vertical type and horizontal type. In general, vertical type is often used in micro water power station. Suitable for 5-40m head medium head sties.

The Propeller turbine is consist of PMG and vertical shaft turbine, suitable for extra low head sites, the turbine will be installed into the volute chamber. It has compact structure, attractive appearance and no need the excitation device.

The submersible turbine is design under France EDF financial support in 2004, which could be used in Europe mills and Korean seawater fish farms, the generator is located inside of turbine which could waterproof well. DLLD has build up a 12kW test station in Xihua University located in Chengdu city of China. 

The Barrel turbine is specially developed for USA low head sites based on Propeller turbine, much more easy to install and simple to maintains thought cost is bit higher. 

The float bucket turbine is suitable for high flow without water head, it is a fish friendly turbine design, but the turbine volume is bit large and transport cost is bit high.

Why micro-Hydropower?

Electricity from micro-hydropower is a clean, safe, emission free, renewable energy.  With proper development it is reliable, requires low maintenance, and results in a lower cost per kW than other options such as:  gasoline, diesel, or wind generators, solar photovoltaic (PV) panels, or the environmental damage and/or expense of bringing the grid from afar.  Community participation, self-sufficiency, and the benefits of reliable lights bring pride, stability, and unity to communities.  Power can be used for lights, radio, TV, computers, small industry (sewing machines, agricultural processing), and large community water heaters.  Especially benefited are women and children who no longer face the smell, smoke, danger, inconvenience, and cost of lanterns.  A consistent water supply allows power generation 24 hours/day even when there is no sun or wind.  The generating equipment produces low noise and can be built so it is not obstructive or abusive to the environment.  Water use is “non-consumptive” in that the water flowing through the turbine returns to the river or stream it originated from and can be reused for agricultural irrigation purposes.

DLLD Micro Hydro Systems Advantages

1. Small size, lightweight, and reasonable integrated design, for the stand-alone system we use rare earth permanent magnet synchronous generator for super-reliable performance and simple structure. For on-grid usage, we can use the asynchronous generator.

2. Equipped with automatic voltage and frequency regulation control function, our ELC controls the electricity for the generator and sends the excess electricity to a dummy load fully. Take an example, if the load loss is 20%, our thyristor will automatically balance this 20% load by itself fully to keep the voltage stabilization. 

3. DLLD hydroelectric equipment can be output AC power directly to be used as a power source for lighting, watching TV, and dragging micro agricultural and by-product processing machinery for farmers. Also could be stored in the battery for peak usage. 

4. DLLD combines a micro water turbine, generator, voltage, frequency stabilization controller, etc. integrated together, with reliable performance and low maintenance cost, which also increase the lifecycle by 20-30 years.

5. Our micro-hydropower system is an environmentally friendly product, with obvious social and economic benefits.

If you are interested in building a micro hydropower power, please advise your available water source data for further discussions, such as Net Head (m), Design Flow (l/s), Required output Power (kW), Required Voltage(V), Frequency (50Hz or 60Hz), Off-Grid or On-Grid, etc as more details as possible. 

Micro Hydropower schematic diagram

The typical micro hydro generator station is as above, which consists of civil work (inlet conduit construction, powerhouse and drain etc),the micro hydro generator, electrical wires and the users wires. The work process is as follows: Collecting the water of stream by reservoir, the water inflow the pressure poor through the inlet conduit, the go into the micro hydro generator which is installed in the powerhouse through the inlet pipeline, force the runner to moving, which drives the generator to generate electricity.At eh same time, the adjustment machine auto adjust the voltage and the frequency to meet the requirements for power supply, and then the user can use the electricity transmitted electrical wires.

Microhydropower can be one of the most simple and consistent forms or renewable energy on your property. If you have water flowing through your property, you might consider building a small hydropower system to generate electricity. Microhydropower systems usually generate up to 100 kilowatts of electricity. Most of the hydropower systems used by homeowners and small business owners, including farmers and ranchers, would qualify as microhydropower systems. But a 10-kilowatt microhydropower system generally can provide enough power for a large home, a small resort, or a hobby farm.

A micro hydropower system needs a turbine, pump, or waterwheel to transform the energy of flowing water into rotational energy, which is converted into electricity. Our Micro-hydro Generator is integrated with turbine and a set of direct connected AC single-phase / three-phase generator. With the characteristics of small body, lightweight, simple structure, reliable operation and convenient assembly, and serving as the power source of lighting, TVs and recorders, it is most suitable for the households in mountain areas with scattered and small hydroelectric sources. The consumers can do easily themselves the installation and operation. This product has been thoroughly strengthened in the special technical measures to good quality, stable function and easy operation for women and children. Much less investment may add more happiness to your family.


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