We've been reviewing the design specs for the first unit and have decided to incorporate the ability to vary the rotor speed (frequency) for the initial trials. This will enable us to play with the speeds in order to find the point at which the generator operates most effectively. In view of...
Waross - sorry for the late response. Booster coils are an excellent idea;however the rotor design does not allow this option to be easily installed. Based on the outcome of our tests with this prototype PM generator, we will be able to determine if booster coils are needed. Good point.
We...
The points you have raised are all valid. We have used a conventional generator of the same design as a baseline (benchmark) and are intending to build a prototype PM generator by replacing the induction (conventional) rotor with a PM rotor.
The whole purpose of this exercise is to determine...
We have calculated a no-load voltage of 460 volts. The output is frequency stable and instead of a rectifier/inverter system, we will use an external voltage regulator to ensure that the output power meets local grid specifications. While it is an expensive solution, it is the only effective...
Thanks for the tips. Been digging into some textbooks.
Currently, this application will work primarily on the grid. Later we intend to use this technology for off-grid applications.
Our company has developed a new technology to drive generators. This proprietary technology has already been...
Thanks for the inputs. Sorry about the lack of clarity in my original quesiton.
We have measured the field strength of the original field in a no-load condition and found 230 mT with a 5 mm air gap. The PM rotor that we are intending to use will have 260 mT with a 8 mm air gap. As we can...
Thanks for clearing up my questions on the saltwater rheostat load.
The variable gap mechanism can only be adjusted when the rotor assembly is stationary and is intended only to be used on the first generator to allow the optimisation of the air gap size. We have already successfuly built a...
Thanks for your critical insight. The generator that we are using as our starting point is a conventional generator from a 1 MW wind turbine. It is our intention to replace the conventional rotor with a rotor design using permanent magnets in much the same manner as GE, Enercon and Siemans...
I checked out the referenced thread and have three questions: (1) how do you determine the volume of saline solution that you require? (2) are we referring to standard table/road salt or a special type of salt? and (3) for our three phase application are all six electrodes immersed in the tank...
We are designing a Permanent Magent Generator and will be using an older conventional generator as a starting point. We intend to replace the conventional rotor assembly with a PM rotor. We have determined the magnet type, size, rotor/stator air gap and rotational speed, but are uncertain how...
We are developing a 1,000 kW permanent magnet generator using an older conventional generator as our starting point. We will replace the old rotor with a PM rotor. In order to test this "new" generator we are going to need a grid resistor or load bank to simulate a resistive load. To preserve...
