Environmental Engineering Reference
In-Depth Information
Chapter 1
Modeling and Control of PMSG-Based
Variable-Speed Wind Turbine
Hee-Sang Ko
Abstract This chapter presents a control scheme of a variable-speed wind turbine
with a permanent-magnet synchronous-generator (PMSG) and full-scale back-to-
back voltage source converter. A comprehensive dynamical model of the PMSG wind
turbine and its control scheme is presented. The control scheme comprises both the
wind-turbine control itself and the power-converter control. In addition, since the
PMSG wind turbine is able to support actively the grid due to its capability to control
independently active and reactive power production to the imposed set-values with
taking into account its operating state and limits, this chapter presents the supervisory
reactive-power control scheme in order to regulate/contribute the voltage at a remote
location. The ability of the control scheme is assessed and discussed by means of
simulations, based on a candidate site of the offshore wind farm in Jeju, Korea.
Keywords Permanent-magnetic synchronous generator
Wind turbine
Wind
farm
Variable speed
Voltage control
Point- of-common coupling
Nomenclature
PMSG
Permanent magnetic synchronous generator
TR
Transformer
TL
Transmission line
Ca
Cable
IB
Infinite bus
VSC
Voltage source converter
PCC
Point-of-common coupling
WT
Wind turbine
Sub-script: 1-5
Bus number
v, i
Voltage, current
