Power electronics is a multidisciplinary field that combines concepts from electrical, electronic, and control engineering to explore the conversion, management, and regulation of electrical power. It involves the study of power semiconductor devices, converters, inverters, and control systems that regulate electrical energy for various applications such as renewable energy, electric vehicles (EVs), industrial automation, consumer electronics and aerospace & defense. In this news, everything PE has listed some interesting articles that were trending on the website in 2024.
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Pre-Arcing (I²T) of an Electric Vehicle
Pre-Arcing I²T of an electric vehicle (EV) fuse refers to the measure of the energy the fuse can absorb during the time between the initiation of an overcurrent event, such as a short circuit, and the moment the fuse element begins to melt and interrupt the circuit. Pre-Arcing I²T measures the permissible current flow through the fuse prior to circuit interruption, safeguarding the EV's high-power electrical components from damage caused by excessive current. Read more.
HVDC Transmission
High Voltage Direct Current (HVDC) is a method of transmitting electricity using direct current (DC) at very high voltages over long distances at high voltage levels, typically ranging from 100-800 kV. In HVDC, electricity is generated or converted from alternating current (AC) to direct current, transmitted over long distances, and then converted back to AC for distribution and consumption. This conversion is achieved using advanced power electronics, such as rectifiers (AC to DC) and inverters (DC to AC). HVDC systems provide distinct advantages for specialized applications, like the interconnection of power grids over extensive distances, underwater cables, or between different countries, where conventional AC systems encounter limits. Read more.
Modular Multilevel Converters
Modular Multilevel Converters (MMCs) are a type of power converter topology that is used for medium and high-voltage applications. They are employed in various applications such as power transmission (especially in HVDC systems), renewable energy integration, and motor drives. MMCs have a modular design, making them scalable and flexible for different power levels and applications. Read more.
AEC-Q103 Qualification Standard
The AEC-Q103 standard is a qualification standard developed specifically for Micro-Electro-Mechanical Systems (MEMS) to ensure reliability, safety, and performance in harsh automotive environments. This standard dictates the test conditions, methods, and acceptance criteria for various MEMS devices used in automotive applications such as pressure sensors, microphones, and other MEMS components. It was developed by the Automotive Electronics Council (AEC), established in the 1990s by Chrysler, Ford, and General Motors. Read more.
IEC Wiring Color Code Standards
The IEC Wiring Color Code Standards are globally recognized guidelines established by the International Electrotechnical Commission (IEC). These standards specify particular colors for wires to identify electrical conductors in both AC (Alternating Current) and DC (Direct Current) power circuits. The objective of these standards is to ensure safety, consistency, and simplicity in electrical installations. They allow professionals worldwide to accurately determine the function and purpose of each wire, minimizing the risk of electrical shocks, short circuits, and other hazards within an electrical system. Read more.
Voltage to Frequency Converter
A Voltage-to-Frequency Converter (VFC) is an electronic circuit that converts an analog voltage signal into a proportional frequency output. The output frequency is directly proportional to the magnitude of the input voltage. This conversion process transforms analog signals, like voltage or current, into digital pulse sequences. The amplitude of the analog signal directly determines the frequency of the pulse waves produced during this process. These resultant output pulses get sent sequentially, allowing precise digital representation of the source analog signal. VFCs also offer high accuracy, stability, and linearity, making them essential components in various precision measurement and control systems. Read more.
Buck-Boost Transformer
A buck-boost transformer is used to either increase (boost) or decrease (buck) voltage levels in electrical power applications. Unlike traditional transformers, buck-boost transformers are designed to make small adjustments to voltage levels, typically for applications needing minor voltage corrections rather than major transformations. These adjustments are crucial when the supply voltage does not match the equipment's required voltage rating, ensuring optimal performance and efficiency. Buck-boost transformers correct off-standard voltages, ensuring optimal performance and efficiency of electrical equipment. Read more.
Cell Balancing in a Battery Management System
Cell balancing in a Battery Management System (BMS) is the process of equalizing the voltages among individual battery cells within a battery pack. It is vital in applications that require the connection of many battery cells either in series or parallel configuration. Read more.
Equivalent Series Resistance of a Capacitor
Equivalent Series Resistance (ESR) of a capacitor refers to the total resistance present in the equivalent series circuit of the capacitor. In other words, it is the effective resistance that considers both the internal and external resistances associated with the capacitor. ESR is an important parameter affecting capacitors' performance and behavior, particularly in high-frequency applications. Read more.
Common Mode Attenuation in EMI/EMC Filters
Common mode attenuation is the ability of an EMI/EMC filter to suppress and reduce common mode noise from the input or output signals. It is used to prevent the noise from propagating through the system and causing interference with other electronic devices or negatively affecting the performance of the filtered equipment. The filtering technique used for common mode noise is based on the principle of symmetry. Read more.
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