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2. 1-quadrant IGBT chopper armature current, terminal voltage, instantaneous torque spectrum , speed

: 5 HP , 240 V , Field : 300 V Parameter : Ra=2.581 , La=0.028 H , Rf=281.3 , Lf=156 H , Laf=0.9483 H Duty cycle = 80% PWM Bipolar 1) Duty Cycle 2) 3) 4) fsw = 1 kHz fsw = 500 Hz

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2.1) Armature current fsw = 1 kHz

fsw= 500 Hz

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2.2) Terminal voltage

fsw= 1 kHz

fsw = 500 Hz

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2.3) Instantaneous torque

fsw= 1 kHz

fsw= 500 Hz

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2.4) Speed

fsw= 1 kHz

fsw= 500 Hz

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2.5) Spectrum fsw= 1 kHz

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fsw= 500 Hz

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DC 240 V

DC 300 V 2237 rpm Duty Cycle = 80% 80% 0.8 x 2237 = 1789 rpm Duty Cycle = 80% , fsw = 1kHz 1778 rpm () Duty Cycle = 80% , fsw = 500 Hz 1862 rpm () : ------------------------------------------------------------------------------------------------------------

* : * Duty Cycle: Duty Cycle