Intelligent wind power unit with tandem wind rotors - Wind Power Generation and Wind Turbine Design - page 340

Grid

P : Input / output
f : Frequency
E : Voltage
Subscripts
1: Primary feed
2: Secondary feed
3: Wind rotors

P = P 1 - P 2
F = f W + f 2
E = E 1

P 1
f 1 = f W + f 2
E 1

P 2 , f 2 , E 2

P W , f W

Bidirectional
Inverter

Double armature type
induction generator

Filter

Tandem wind rotor

Figure 8: System diagram of double rotational armature type double-fed induction
generator.

Figure 9: Trial model of the double rotational armature type double-fed induc-
tion generator.

(7)

(1). Generator
(2). Torque meter
(3). Motor
(4). Power meter
(5). Tachometer
(6). Inverter
(7). External load
(Bulb)

(6)

(5)

(4)

(1) (2) (3)

Figure 10 : Bench test for the induction generator.