Table 4
Active and reactive power control of hydro generators.
Sl.
No
Control Techniques Machine
Type
Types of Power Electronics Converter Application Year [Ref.
No]
1 Decoupled power controller DFIG Cycloconverter Active and reactive power control 1991 [126]
2 Decoupled controller based position
sensor less scheme
DFIM Bidirectional power flow converter Torque and reactive power control 1995 [120]
3 Decoupled power controller DFIG Single quadrant diode bridge with
controlled converter
Robust torque tracking and reactivepower
regulation
1998 [119]
4 Indirect control DFIG Single quadrant diode bridge with
controlled converter
Maximum active power generation 1999 [125]
5 Decoupled power controller DFIG IGBT based 6-pulse back to back
converter
Optimal active and reactive power
control
2001 [121]
6 Vector control DFIG Bidirectional power flow converter Reactive power control 2001 [122]
7 Stator flux oriented control DFIG Single quadrant diode bridge with
controlled converter
Reactive power control and torque
pulsation compensation
2003 [124]
8 Decoupled power controller DFIG Four quadrant ac-dc-ac power converter Active and reactive powers control
according to the imposed power
limitations
2005 [118]
9 Hopf bifurcation phenomena based
vector-controlled
DFIG Bidirectional power flow converter Active and reactive power control 2006 [128]
10 Direct power control strategy DFIG Back-to-back PWM converter Active and reactive power control 2007 [142]
11 Vector based direct control DFIG Single quadrant diode bridge with
controlled converter
Direct active and reactive power control 2008 [127]
12 Vector control based HPSOWM algorithm DFIG Bidirectional power flow converter Reactive power control 2010 [123]
In the Above table:
DFIG: Doubly fed induction generator
DFIM: Doubly fed induction machine
HPSOWM: Hybrid particle swarm optimization with wavelet mutation