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The paper presents the experimental results under power frequency, exponential decay pulse, square and sinusoidal pulse width modulated (SPWM) voltage waveforms, with the same peak values, applied to the insulation system of a form wound stator coil. Both the infrared images and the maximum temperature rise of the coil under different electrical stresses were recorded. Results show that the temperature...
Applications of solid state driver for medium or high voltage motor are widespread. However, due to high switching frequency as well as high dV/dt, increased dielectric stresses and thermal stresses are applied on the insulation system; thus leading to the insulation failure of the motor. In order to test the insulation performance of the motor under the above stress conditions, a motor insulation...
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