A machine vision system for film capacitor defect inspection
The proposed algorithms can well realize the detection of uneven appearance defect, glitch defect, red paint missing defect and protruding edge defect of film capacitors. The
A robust vision inspection system for detecting surface defects of
In this paper, we propose a robust vision inspection system for assessing film capacitor defects. In particular, the proposed system is made up of a LCD screen, four
CN102998599A
The invention provides a polypropylene metal film capacitor detection method, which judges whether a capacitor is qualified or not by judging whether a polypropylene metal film...
Detection of Self-Healing Discharge in
Metallized film capacitors (MFCs) are widely used in reactive power compensation and the improvement of power factors. The key property of MFCs is the spontaneous
Detection and segmentation framework for defect detection on
This paper proposes a deep-learning-based MLCC defect-detection framework composed of dielectric detection, dielectric segmentation, and margin ratio computation.
A robust vision inspection system for detecting surface defects of
This paper presents a robust vision inspection system for detecting the surface defects of film capacitors. In particular, we use a novel Non-subsampled Contourlet Transform
An automatic detection system for film capacitor based on DCS
In this paper, an automatic pipeline system is proposed to detect the exterior defects of film capacitors. The industrial personal computer (IPC) and micro-cont
A Machine Vision System for Film Capacitor Defect
The proposed algorithms can well realize the detection of uneven appearance defect, glitch defect, red paint missing defect and protruding edge defect of film capacitors. The experimental results show that the proposed vision system
A robust vision inspection system for detecting surface defects of
Specifically, we apply a novel Nonsubsampled Contourlet Transform (NSCT) with adaptive threshold to inspect the surface defects of capacitors. Then, the inspection results
6 FAQs about [Capacitor film detection]
What is a film capacitor?
7) A film capacitor is a capacitor in which a metal foil is used as an electrode, and a plastic film such as polyethylene, polypropylene, polystyrene, or polycarbonate is stacked from both ends and wound into a cylindrical shape.
How to choose a film capacitor?
The choice of film capacitor depends on the highest voltage applied and is affected by factors such as applied voltage waveform, current waveform, frequency, ambient temperature (capacitor surface temperature), capacitance, and the like.
How do you know if a film capacitor is bad?
1) First look at the appearance, if there is a problem with the appearance, the film capacitor is likely to have problems. 2) Test the two legs of the film with a multimeter resistance file to be very high resistance. If there is a capacitance meter, measure the capacitance value to match the mark on the housing.
What is the structure of a metallized film capacitor?
Structure of a typical metallized film capacitor (MFC). One MFC consists of three phase units, while a phase consists of one or more cylindrical capacitor elements. The phases are connected by two main methods: Δ connection and Y-N connection. Figure 2 displays these connections.
How can metallized film capacitors improve self-healing performance?
Based on the experimental observations, a detection algorithm incorporated with the ultrasonic emission sensors, preamplifier, and high-speed A/D converter was developed to assist the self-healing performance test. 1. Introduction Metallized film capacitors (MFCs) are widely used in reactive power compensation and the improvement of power factors.
Are film capacitors good for power conditioning?
A powerful contender for power conditioning tasks. Film capacitors are particularly suitable for applications that do not need to be held (or traversed), such as between power outages or peaks in line frequency fluctuations, requiring large high-frequency ripple currents to be supplied or absorbed with high reliability and low loss.