1.Features

u Adopting standard embedded structure               

u The three-phase full controlled bridge  structure

u The adaptive adjustment method                    

u It can be designed for large power double or

u multi bridge structure

u The multi bridge of equal current coefficient

u can reach more than 0.95

u Easy to use and operation

u The display mode (touch screen design)  

u The high ability of pulse driver

u The perfect self checking function                   

u The self reset function

u Perfect testing function                

u The perfect limited protection function

u The excellent control characteristics                    

u Reliable double power supply

u RS485 and Ethernet communication        

u The digital input and output

u Adpoted double control excitation regulator, can be composed of Dual Ethernet network

2. Main technical parameters

u Analog input channel: 24              

u Resolution of analog input parameters: 210

u Digital input:  16                 

u Digital output:  16

u Auto / manual adjustment range:（10～130）% rate value

u Excitation: overshoot ＜1％ rated value, the excitation time＜2.5s, the times of the oscillation frequency ＜1.

u Adjustment ratio: software reactive power compensative ±15％       

u Voltage regulating accuracy: ≯±0.5%

u The thyristor phase shift range: 5～165°          

u The thyristor control angle resolution: 1/2056                                      

u The excitation system can meet the set of   manual and automatic synchronization   generator

u Guarantee 110% excitation current situation of long-term job

u The unit operation frequency change 1%, the rated terminal voltage change ≯0.1%

u The terminal voltage decreased to 80% rated value, provide a strong excitation current is more than 1.8 times, the duration time ≮20s 

u The voltage response time of excitation system: the rise time ＜ 0.08s, the fall time ＜ 0.15s 

u The voltage response ≮ is not less than 2 units/ second

u The automatic excitation regulator for regulating precision ＜ 0.2% rated voltage

u Normal excitation mode is residual voltage excitation, when the residual voltage is 2% rated voltage, it can start the excitation, when no residual voltage, the mirco-processor will strat the detection control of automatic excitation, and without human intervention, the automatic excitation capacity is 1kVA , the excitation is without overshoot and oscillation.

u The terminal voltage overshoot≯ 10% rating, the oscillation frequency ≯ 3, the adjusting time≯5s after the generator break of rated power and rated reactive power.

u The PT is equipped with excitation break detection, automatic switching and protection, concurrent signal

u The rotor overvoltage protection, concurrent signal

u The fan stops wind limited protection, concurrent signal

u The power bridge rectifier fault protection, concurrent signal

u Regulation accuracy of auto excitation regulator is better than 0.1% rated voltage

u voltage response ≮2 unit/second

3.Main function

1) Maximum excitation current value (inverse time limit) and strong excitation inverse time limit;

2) Rotor Overvoltage Protection function;

3) PSS function;

4) Under the excitation limit + loss of protection function;

5) Software phase shift and adjustment;

6) Automatic tracking system voltage or a given voltage;

7) Generator PT break monitoring and automatic switching protection;

8) The protective function of the device to stop wind, silicon controlled fault and partial removal;

9) Power bridge rectifier fault protection;

10) Online modification parameters and real-time parameter display;

11) Real time data recording;

12) Self diagnosis and recovery;                             

13) The constant voltage, constant current, constant reactive power, constant power           factor and so on;

14) Self checking and fault tolerance of the software;

15) Adaptive variable structure, variable parameter parallel PID regulation law;

16) Remote control and local control functions;

17) Communication with the upper computer by RS485 or Ethernet;

18) Digital value can be used to the interface.