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Medium voltage adjustable speed converters are a trend for high power applications. The products released in the last decade showed maturity of the technology and brought more confidence to use medium voltage converters in industry applications. Besides high power capability, some segments require optimized footprint for the machines installed inside the plant site. This requirement is pushing the...
The Modular Multilevel Converter (MMC), even though a fairly recent converter, is considered a very important one for the future of electrical power systems, variable speed drives and other applications. The MMC enables ac-dc and dc-ac conversion at virtually any voltage levels without relying on bulky transformers. This work presents a newly developed comprehensive control oriented model and a control...
This paper presents the results of an implemented control strategy applied to an IGBT based Medium Voltage inverter with NPC topology driving a salient-pole synchronous AC machine. Tests with a 1000 HP synchronous machine and a three level inverter (4.16 KV / 120 A) were performed. The control system provides a high dynamic performance with a fast torque control. The additional functionalities necessary...
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