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ACCURATE COMPUTER SIMULATION OF A TRIAC IN A MOTOR APPLICATION
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| Author(s) |
L. J. Giacoletto; Andrew Reck |
| Abstract |
A computer model is developed which accurately simulates the following TRIAC operating properties: (1) ON-OFF four-mode control of main terminal current via gate pulsing. (2) Different gate triggering sensitivity for +/-main terminal current and +/-gate current. (3) lnhibit gate triggering for -main terminal current and +gate current. (4) TRIAC OFF resistance. (5) Transfer from ON to OFF state as related to main terminal hold current of either polarity. (6) Transfer from OFF to ON state due to main terminal exceeding rated blocking voltage of either polarity (self-triggering). (7) Main terminal diode-like ON characteristics tor either polarity as a function of temperature to provide exact power dissipation determination. (8) Gate terminal diode-like ON characteristics for either polarity as a function of temperature to provide power dissipation. (9) Minimum gate pulse width required for ON triggering. (10) Turn-on time and turn-off time. (11) Critical rate of rise of commutating voltage. Methods for determining the various model parameters are presented and applied specifically to a BTA10-700CW (2N6349A) TRIAC. Two of these TRIACS are used to simulate the simplified forward-reverse operation of an induction motor using a phase-shifting capacitor switched between the motor coils. |
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| Filename: | Unnamed file |
| Filesize: | 3.711 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-07-26 by System |
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