Distributed Generation and Microgrids

Permanent magnet 
synchronous generators 
are commonly used in the 
industry for microturbine
applications 
Basic microturbine and power 
electronics configuration 

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The single-shaft, high-speed microturbine system can be of 
different configurations depending on the power converter 
DC link 
converter 
The high-frequency power from the generator must be 
converted to DC first either by using a diode-bridge 
passive rectifier 

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or the high-frequency power from the generator may be 
converted to DC by using a self-commutated active 
rectifier 
A controller manages the operation of the active rectifier 
and inverter circuitry by ensuring that functions such as 
*voltage following, 
*current following, 
*phase matching, 
*harmonic suppression are performed reliably and at high 
efficiency. 
The controller may be mostly 
*on-board, 
* Pc-based, 
*A processor linked to a pc, etc., 

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High-Frequency Link Converter 
Another type of high-interest power conversion system is the 
high-frequency link converter (HFLC
). 
Although the HFLC requires a higher number of 
parts, the circuit provides several advantages, 
including: 
*The use of a transformer for robust isolation 
*The use of compact, high-frequency transformers 
*Easier addition of other isolated loads 
*Supplies via additional windings and taps 
*Elimination of the need for static transfer switches 

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