A review of multiphase energy conversion in wind power generation

As an important renewable energy source, the scale of wind energy utilization is growing rapidly worldwide in recent decades. The increasing capacity of both onshore and offshore wind power generation calls for higher requirements for the power level and reliability of generators and converters. Compared to the traditional threephase wind power generation, multiphase wind power generation systems have obvious advantages in lowvoltage high-power operation, enhanced fault-tolerant ability and increased degrees of control freedom, which help them gaining increasing popularity in modern wind power generation. This paper presents an overview on the multiphase energy conversion of wind power generation and introduces the pertinent technology advances, including the design of multiphase wind turbine generators, multiphase converter topologies, modeling and control of multiphase generators. Besides, this paper offers prospects of novel solutions brought by the redundant control freedom in multiphase system to cope with some difficult technical problems, such as Common-Mode Voltage (CMV) suppression, Low Voltage Ride Through (LVRT), and vibration & noise reduction.

Automated summary

Multiphase energy conversion technology in wind power generation is gaining increasing popularity in the modern wind energy industry, offering advantages such as low-voltage high-power operation and enhanced fault-tolerant ability. The prospects for the future look optimistic.