Ridder's SOLAR BVBA Solar Photovoltaic (PV) System
RIDDERS-SOLAR, always a step closer to perfection!
  Compared to Horizontal Axis Wind Turbines (HAWTs), Vertical Axis Wind Turbines (VAWTs) have the following advantages:  
  • Low noise;
  • No requirements on wind direction;
  • Water proof and dust protected for generators and rotor;
  • Low requirements for wind speed, maintenance free;
  • High efficient (low cut-in wind speed and the energy generated during low-and-middle-speed wind is higher than those generated by the HAWTs);
  • Easy to set up and nice-looking;
  • Able to handle high wind speed (tolerance of wind speed as high of 45 meters per second).
For countries as Belgium, it is important to have wind turbines that can already produce energy starting from very low wind speeds. The reason is quite simple, the average wind speed in Belgium is approx 3,6 meters a second (more at the cost side).  
The best for use in Belgium is in fact for the small 500 watt wind turbine. This will give already 1.883 Kwh a year with the average wind speed as we have in Belgium. Putting 2 small wind turbines of 500 watt will significantly give more power than one 1000 watt turbine in our country. Those wind turbines have blades made with a special profile, the so called Jedelsky profile. This makes that the efficiency will be very high.
  We give you here the parameters from per example a 500 watt turbine, specially made for Belgium conditions and home owners:  
  Technical data of wind power generator
Power 500 W
Blade Material:304# stainless steel
Size of blade(H*W) MM 1200*400
Quantity of the blades 5
Diameter (MM) 1800
generator 30RPM
Rated wind speed 8m/s
Rated power 500 W
Start up wind speed 1.5(m/s)
Operating wind speed 3-25(m/s)
Free stand tower 6m
Security wind speed 40(m/s)
Output controller system charger and inverter
Capacity and quantity of battery(reference) 2PCS*100AH
  Typical Power graph for the 500 watt vertical axis wind turbine  
  The best way to use this kind of wind turbines for home appliances is the following workflow:  
  • energy delivered by the wind turbine will be stored into a battery, by using a battery charger.
  • once battery is fully loaded, we bring the energy from the battery by using an inverter to the grid. This way we make from the DC an AC voltage with 50Hz.
  We offer VAWT systems from 200 watt up to 50 Kw.  
  Horizontal wind turbines  
  We sell Horizontal Axis Wind Turbines with capacity ranging from 0.2kw to 50kw with specifications as follows
Technical Specifications (Horizontal Axis Wind Turbines)

200W 300W 600W 1kw 2kw 3kw 5kw 10kw 20kw 30kw 50kw
Rotor Diameter (m)   
2.2 2.6 2.8 3.2 4 5 6 8 11 12.05 18
Rated Revolution
400 400 400 400 400 220 220 160 120 100 80
Rated Speed (m/s)
8 8 8 8 9 10 10 10 10 12 13
Rated Capacity (w)       
200 300 600 1000 2000 3000 5000 10000 20000 30000 50000
Optimal Capacity (w)          
350 450 750 1500 3000 4500 7000 15000 25000 35000 55000
Output Voltage (v) 
24 24 24 48 96 220 220 380 380 380 380
Cut-in Speed (m/s)
3 3 3 3 3 3 3 3 3 3.5 3.5
Working Speed (m/s)
3-25 3-25 3-25 3-25 3-25 3-25 3-25 3-20 3-20 3.5-20 3.5-20
Cut-out Speed (m/s)
40 40 40 40 40 40 40 40 40 40 40
Tower Height (m)
6 6 6 6 6 8 9 12 15 18 18
Hub Weight (kg)
27 30 60 83 95 215 250 600  800  1150 2050
Tower Type          
Φ60*3 Φ60*3 Φ75*4 Φ75*4 Φ89*3 Φ133*5 Φ1590*5 Φ219*6 Φ377*6 Φ426*8 Φ600*8
Outputting Control System

 Controllers Converters
Suggested Capacity of Batteries 2 2 2 4 8 18 18  30 30 60 120
Highly Effective Permanent Magnet Generators
  We offer a whole range of permanent Magnet Generators in standard configuration (specifications on demand). Newt to the standard we deliver also OEM made generators.  
  • low speed, no need of speed reducer; generating higher voltage of electricity;
  • Optimized design and structure; Brushless excitation, no sparkle; Protection Grade: IP44; with protection to prevent water or dust from entering into the generator; long-term service life;
  • Without field winding, and high revolutions.
  • Without generator excitation controller, simple structure and reliable.
  • Small size, light, suitable for certain circumstances;
  • It can work highly effectively within the entire range of the revolution.
  • Tolerant for vibrant, repeatedly switching-on-and-off, and reverse revolution ,
  • Made with high speed bearings and maintenance free
The output voltage, revolution and capacity of the generator are changeable. The shape of the generator can be made according to customer’s specific need.
  Rare Earth Permanent Magnet Generators  
  We can supply rare earth permanent magnet generators in 0.3kw~10kw voltages.  
  • Small size and light weight: Its size and weight are 30% less than those of conventional generators.
  • Our rare earth permanent magnet generators are reliable, maintenance fee and durable. Without brush, field winding, voltage regulator or any other electronic components, our rare-earth generators are more durable than the conventional ones;
  • Optimal electrical performance. The electrical performance of our rare earth generators is not only better than the national standards and but also better than that of Japanese generators. They can meet the requirements of all kinds of high precision measurement devices and computers.
  • When carrying resistant load (such as electric bulb), our generators can save over 50 grams of fuel per kilowatt-hour. Its average energy-saving rate is over 15%, comparing to conventional generator. Besides, rare-earth generators have strong carrying capacity for inductive load; can drive electromotor with over 80% of its own power. It is a big forward since the invention of single-phase generator. Therefore when carrying inductive load, rare earth generators can save energy over 60% compared to conventional generator. As for driving force, one rare earth generator can generate twice as much as those by conventional generators.
  Installation Chart for Wind Turbines  
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