Comparing the performance of 1200V silicon carbide (SiC) MOSFETs with 1200V silicon MOSFETs and IGBTs at high frequency is critical to establish the difference in device losses and power-handling capabilities between the technologies. Using a demonstration platform that can be set to emulate a given set of parameters (e. g. , switch voltage, current
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, frequency and case temperature) that the devices will face at high power under hard-switched conditions, the difference in losses between the device technologies can be characterized by comparing DC input power. Because it is not practical to build separate platforms (retrofitted with SiC devices) for each potential application, (including grid connected solar inverters, power factor correction circuits, motor drives, interruptible power systems, etc. ), it was necessary to design a demonstration platform to overcome this limitation. A transformerless DCDC converter platform with a single ground-referenced switch affords the capability of recirculating the load current back to the input link, eliminating the inherent limitations of a transformer-based platform (prohibitively high losses through proximity and skin effects of the transformer windings at high frequencies). The single-ended primary inductor converter (SEPIC) provides the ability to buck/boost without inverting the output voltage, thus making it an ideal platform to compare relative device performance between SiC MOSFETs and comparably-rated conventional silicon MOSFETs and IGBTs. The comparison included the best available examples of a 1200V silicon MOSFET (Microsemi APT28M120B2)1, the highest current 1200V silicon MOSFET in a TO-247 package available (its maximum current rating at 100 °C is similar to that of the SiC MOSFET); a 1200V silicon IGBT (Infineon...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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