What are the magnetic components in the circuit? The classification and application of magnetic components
What are the magnetic components in the circuit? The classification and application of magnetic components
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- Time of issue:2021-06-28 10:59
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(Summary description)Magnetic components are usually composed of windings and magnetic cores. It is a necessary power electronic device for energy storage, energy conversion and electrical isolation. It mainly includes transformers and inductors. In almost all power circuits, magnetic components are inseparable. Magnetic components are one of the most important components of power electronic technology. Classification of magnetic components Magnetic components are mainly divided into transformers and inductors. The main function of the transformer is isolation, voltage conversion, etc., and its core is energy transfer. The main function of inductance is resonance, filtering, etc., and its core is energy storage. Although magnetic components such as electronic transformers and inductors are just small seemingly inconspicuous parts, they play an indispensable role in products such as new energy vehicles, LED power supplies, and photovoltaic inverters. Generally speaking, electronic transformers play the role of voltage transformation, filtering, and energy storage in products, while inductance is to solve EMI problems, electromagnetic compatibility, and so on. Measurement of magnetic components The most common and widely used soft ferrites currently produced are manganese-zinc ferrite (for low frequency) and nickel-zinc ferrite (for high frequency). When the factory leaves the factory, one end of the medium-wave magnetic rod of the manganese-zinc tongue retractor is often painted with black paint, and one end of the nickel-zinc short-wave magnetic rod is painted with red paint. These three methods can be used: 1. Visual inspection method 2. Water milling method 3. Measure with a multimeter. Application of magnetic components The figure below is a typical switching power supply structure, the yellow part is the application of magnetic devices. In addition, the auxiliary power supply also needs a flyback transformer, and there is a PFC inductor in the PFC circuit. Sometimes the output port of the power supply will increase the EMC filter inductor based on EMC requirements. The importance of magnetic components Generally speaking, the volume of the magnetic device accounts for about 20% to 30% of the entire switching power supply, the weight accounts for about 30% to 40%, and the loss accounts for about 20% to 30%. From the figure below, you can intuitively feel the position of magnetic devices in the switching power supply. Magnetic component technology is very important for power converters. In almost all power circuits, magnetic components, inductors or transformers are inseparable. For example, inductance is used at the input and output to filter out the harmonics of the switching waveform; in the resonant converter, the inductor and capacitor are used to generate resonance to obtain sine wave voltage and current; in the snubber circuit, the inductance is used to limit the current change rate of the power device ; In the boost converter, energy storage and transmission; sometimes inductance is used to limit the transient current of the circuit. The transformer is used to electrically isolate the two systems, transform voltage or impedance, or produce phase shift (3-phase delta-Y transformation), store and transfer energy (flyback transformer), and voltage and current detection (voltage and current Transformer). It can be said that magnetic components are one of the most important components of power electronics technology.
What are the magnetic components in the circuit? The classification and application of magnetic components
(Summary description)Magnetic components are usually composed of windings and magnetic cores. It is a necessary power electronic device for energy storage, energy conversion and electrical isolation. It mainly includes transformers and inductors. In almost all power circuits, magnetic components are inseparable. Magnetic components are one of the most important components of power electronic technology.
Classification of magnetic components
Magnetic components are mainly divided into transformers and inductors. The main function of the transformer is isolation, voltage conversion, etc., and its core is energy transfer. The main function of inductance is resonance, filtering, etc., and its core is energy storage.
Although magnetic components such as electronic transformers and inductors are just small seemingly inconspicuous parts, they play an indispensable role in products such as new energy vehicles, LED power supplies, and photovoltaic inverters. Generally speaking, electronic transformers play the role of voltage transformation, filtering, and energy storage in products, while inductance is to solve EMI problems, electromagnetic compatibility, and so on.
Measurement of magnetic components
The most common and widely used soft ferrites currently produced are manganese-zinc ferrite (for low frequency) and nickel-zinc ferrite (for high frequency). When the factory leaves the factory, one end of the medium-wave magnetic rod of the manganese-zinc tongue retractor is often painted with black paint, and one end of the nickel-zinc short-wave magnetic rod is painted with red paint. These three methods can be used: 1. Visual inspection method 2. Water milling method 3. Measure with a multimeter.
Application of magnetic components
The figure below is a typical switching power supply structure, the yellow part is the application of magnetic devices. In addition, the auxiliary power supply also needs a flyback transformer, and there is a PFC inductor in the PFC circuit. Sometimes the output port of the power supply will increase the EMC filter inductor based on EMC requirements.
The importance of magnetic components
Generally speaking, the volume of the magnetic device accounts for about 20% to 30% of the entire switching power supply, the weight accounts for about 30% to 40%, and the loss accounts for about 20% to 30%. From the figure below, you can intuitively feel the position of magnetic devices in the switching power supply.
Magnetic component technology is very important for power converters. In almost all power circuits, magnetic components, inductors or transformers are inseparable. For example, inductance is used at the input and output to filter out the harmonics of the switching waveform; in the resonant converter, the inductor and capacitor are used to generate resonance to obtain sine wave voltage and current; in the snubber circuit, the inductance is used to limit the current change rate of the power device ; In the boost converter, energy storage and transmission; sometimes inductance is used to limit the transient current of the circuit. The transformer is used to electrically isolate the two systems, transform voltage or impedance, or produce phase shift (3-phase delta-Y transformation), store and transfer energy (flyback transformer), and voltage and current detection (voltage and current Transformer). It can be said that magnetic components are one of the most important components of power electronics technology.
- Categories:Corporate News
- Author:
- Origin:
- Time of issue:2021-06-28 10:59
- Views:
Magnetic components are usually composed of windings and magnetic cores. It is a necessary power electronic device for energy storage, energy conversion and electrical isolation. It mainly includes transformers and inductors. In almost all power circuits, magnetic components are inseparable. Magnetic components are one of the most important components of power electronic technology.
Classification of magnetic components
Magnetic components are mainly divided into transformers and inductors. The main function of the transformer is isolation, voltage conversion, etc., and its core is energy transfer. The main function of inductance is resonance, filtering, etc., and its core is energy storage.
Although magnetic components such as electronic transformers and inductors are just small seemingly inconspicuous parts, they play an indispensable role in products such as new energy vehicles, LED power supplies, and photovoltaic inverters. Generally speaking, electronic transformers play the role of voltage transformation, filtering, and energy storage in products, while inductance is to solve EMI problems, electromagnetic compatibility, and so on.
Measurement of magnetic components
The most common and widely used soft ferrites currently produced are manganese-zinc ferrite (for low frequency) and nickel-zinc ferrite (for high frequency). When the factory leaves the factory, one end of the medium-wave magnetic rod of the manganese-zinc tongue retractor is often painted with black paint, and one end of the nickel-zinc short-wave magnetic rod is painted with red paint. These three methods can be used: 1. Visual inspection method 2. Water milling method 3. Measure with a multimeter.
Application of magnetic components
The figure below is a typical switching power supply structure, the yellow part is the application of magnetic devices. In addition, the auxiliary power supply also needs a flyback transformer, and there is a PFC inductor in the PFC circuit. Sometimes the output port of the power supply will increase the EMC filter inductor based on EMC requirements.
The importance of magnetic components
Generally speaking, the volume of the magnetic device accounts for about 20% to 30% of the entire switching power supply, the weight accounts for about 30% to 40%, and the loss accounts for about 20% to 30%. From the figure below, you can intuitively feel the position of magnetic devices in the switching power supply.
Magnetic component technology is very important for power converters. In almost all power circuits, magnetic components, inductors or transformers are inseparable. For example, inductance is used at the input and output to filter out the harmonics of the switching waveform; in the resonant converter, the inductor and capacitor are used to generate resonance to obtain sine wave voltage and current; in the snubber circuit, the inductance is used to limit the current change rate of the power device ; In the boost converter, energy storage and transmission; sometimes inductance is used to limit the transient current of the circuit. The transformer is used to electrically isolate the two systems, transform voltage or impedance, or produce phase shift (3-phase delta-Y transformation), store and transfer energy (flyback transformer), and voltage and current detection (voltage and current Transformer). It can be said that magnetic components are one of the most important components of power electronics technology.
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