THYRISTOR EXCITERS TEP SERIES FOR SYNCHRONOUS MOTORS

 

Thyristor exciters are intended for synchronous motors excitation winding supplying and reactive power regulation. Thyristor exciters structure includes: controlled rectifier – synchronous motor excitation winding power supply device (rectifier appliance with impulse-phase operate system); income reactor (or transformer); field suppression component, test system; output current, exciter voltage and stator current measure and control devices; protection and signal systems, including faults indication, automatic regulation and diagnose systems. Motor start control relay-contact apparatuses can be delivered with synchronous motor thyristor exciters as complete units.

Synchronous motor exciters features are given in Table1.

Table 1

Rated output current, А

Rectifier rated output voltage (on the load), V

Rated output power, kW

Dimensions LxBxH, mm

Drive’s weight, kg

320

48

15,36

600х400х1975

175

320

75

24

600х400х1975

175

320

115

36,8

600х400х1975

175

320

150

48

600х400х1975

175

320

230

73,6

600х400х1975

175

400

48

19,2

600х400х1895

175

400

75

30

600х400х1895

175

400

115

46

600х400х1895

175

400

150

60

600х400х1895

175

400

230

92

600х400х1895

175

500

48

24

600х600х2360

200

500

75

37,5

600х600х2360

200

500

115

57,5

600х600х2360

200

500

150

75

600х600х2360

200

500

230

115

600х600х2360

200

630

48

30,24

600х600х2360

200

630

75

47,25

600х600х2360

200

630

115

72,45

600х600х2360

200

630

150

94,5

600х600х2360

200

630

230

144,9

600х600х2360

200

800

48

38,4

1400х600х2080

450

800

75

60

1400х600х2080

450

800

115

92

1400х600х2080

450

800

150

120

1400х600х2080

450

800

230

184

1400х600х2080

450

1000

115

115

1400х600х2080

450

 

In the Table1 drives’ dimensions and weights are given without mains transformer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Exciters TEP series functional scheme is given on Picture1.

Picture1. Thyristor exciter TEP series functional scheme

 

M – synchronous motor

OB – oil circuit breaker

Q1, QF1 – automatic cut-out

T1 – transformer

TB1 – thyristor bridge

CT – current transducer

VT – voltage transducer

SCT – stator current transducer

SVT – stator voltage transducer

RS1 – bypass

CTr – current transformer

VTr – voltage transformer

PSB – power supply block

MPOS – microprocessor operational system

R – resistors block

 

Conditional shorthand structure:

TEP – X1X1X1X1/X2X2X2 – X3X4X5X6 – X7X7X7 – X9X10X11 – X12X12X13X13X13X14

TEP – DC thyristor drive;

X1 – rated output current, A;

X2 – rated output voltage, V;

X3 –power sources connection fulfillment:

1 – transformer,

2 – reactor;

X4 – operation mode fulfillment:

3 – irreversible;

X5 – line contactor existence fulfillment:

2 – without contactor;

X6 – remote control panel existence fulfillment:

1 – with panel (supplying separately for drive operation),

2 – without panel;

X7 – main circuit destination fulfillment:

SME – synchronous motor exciter;

X9 – regulation system modification:

6 – current regulation system;

X10 – operating system fulfillment:

A – analog;

P – digital, processor;

X11 – cooling type:

1 – natural air cooling,

2 – forced air cooling;

X12 – object-oriented fulfillment modification:

0 – base,

1-99 – object-oriented;

X13 – climate fulfillment type according to the GOST 15150;

X14 – placement category according to the GOST 15150.

 

The exciters are produced for currents from 200A to 1000A and voltage from 24V to 440V.

They provide: motor direct (reactor) start; excitation current manual assignment and its stabilization on specified level; motor reactive power automatic regulation with subordinate excitation current regulation; voltage automatic regulation (stabilization) on the stator binders with excitation current subordinate regulation; given cosφ automatic adjustment with excitation current subordinate regulation; excitation current forcing during connection motor to the mains, power supply voltage embarkation, motor load angle above defined value increasing.

During 380V power voltage feeding the system makes automatic self-diagnostic and exciter power circuits’ checking. Exciter readiness to work contact signal is given out at the positive-going diagnostic result.

It provides motor actual parameters automatic monitoring, which can be transferred in code form over RS485, CAN sequential interfaces to the receiving device scrap for following decoding.

Local control panel (mounted on the cabinet’s door) with placed keyboard and display on it gives a possibility to receive full information about motor start method, all actual motor work parameters, main excitation current selected regulator, other regulators parameters, about exciter emergency disconnection causes also. The software and the controller memory capacity allow making archive of exciter operation mode dates.

Main protection types: against external and internal exciter short circuits; against prolonged synchronous motor start; against asynchronous motion of synchronous motor; against excitation current abruption; against stator and rotor current overloads; against rotor winding over-voltages; against rotor isolation breakdown to the earth.

Exciters have connection ports with upper level - RS485, CAN. Information transferring is executed along PROFIBUS, MODBUS and other protocols.

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