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Hello Waross, It`s still applicable to small units, however, as you said you will see way more rotating exciter on a small machine because it's way cheaper. As for the PMG you stand very correctly, having the PMG give you some fault ride through capability. Since the machine has inertia...

Hello rockman7892, As you mentioned there are 2 great categories of excitation system : 1) Full Static : This is the most common. Typically an excitation transformer will be shunt fed by the generator output, then that transformer will feed the excitation bridges that will convert the AC...

Hello oresakri, First of all, you need to know what is the unit rated field current (at rated MW, Rated PF). Then, a good rule of thumbs is to add a margin on that value. Then with that value, that would determine the bridge size you need (vendors have different bridge size to reduce the cost...

Hello ffllyyeerr Maybe you already know, but just to add to your knowledge, a reactive droop compensation behave in a way that will prevent / reduce MVars sharing between units. The typical case where this will be used is where you have 2 units sharing the same step-up transformer. (2 or more...