Aktiebolaget Skf

Avo Multi-amp Corporation

Adam Bierman

Craig Powers

Michael Hon

A partial discharge detection board includes a voltage divider configured to attenuate a voltage of a reflected signal. A buffer is connected to the voltage divider. The buffer attenuates frequencies of the reflected signal that are greater than an upper cutoff frequency. An analog-to-digital converter is connected to the buffer. The analog-to-digital converter receives portions of the reflected signal up to the upper cutoff frequency, and the analog-to-digital converter converts the reflected signal from an analog domain to a digital domain. A filter is connected to the analog-to-digital converter. The filter attenuates frequencies of the reflected signal that are less than a lower cutoff frequency. A comparator is connected to the filter. The comparator compares the voltage of the reflected signal to a reference voltage. A counter is connected to the comparator. The counter increments when the voltage of the reflected signal is greater than the reference voltage.

Partial discharge detection bandwidth expansion through input signal aliasing

The disclosure herein relates to a partial discharge detection board comprising a high voltage resistor divider. The high voltage resistor divider can reduce a voltage peak of an impulse surge generated by a surge board. The high voltage resistor divider can also include a high side with a first resistance and a low side with a second resistance.

Partial discharge signal detection using resistive attenuation

The disclosure herein relates to a field-programmable gate array for detecting and normalizing partial discharges in a digital signal. The field-programmable gate array includes a filter that receives the digital signal and isolates high frequency information from the digital signal. The field-programmable gate array then normalizes the high frequency information by a compensation value to produce a normalized signal. Further, a comparator of the field-programmable gate array can determine whether the normalized signal exceeds a threshold input. In turn, a counter of the field-programmable gate array increments a counter value in response to each determination that the high frequency information exceeds the threshold input.

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Fort Collins, CO, United States of America

Adam Bierman