How to solve the harmonics of switching power supply
1. Adopt harmonic suppression circuit
The use of harmonic suppression circuits can limit the generation of high-frequency currents and effectively reduce the impact of harmonic currents on switching power supplies.
2. Adopting a new type of filter
The new type of filter has a good solution effect on the harmonic problem of switching power supplies, such as using non inductive topology circuits, multi capacitor multi parameter filters, etc.
3. Improve the design of switch mode power supply
In the design of switch mode power supplies, electronic components, wiring forms, and composite materials should be optimized to minimize internal energy loss and degradation, and reduce harmonic generation.
4. Install energy-saving appliances or increase output voltage
By installing energy-saving appliances or increasing the output voltage of switching power supplies, the generation and impact of harmonic currents can be effectively reduced.
In short, the generation and harm of harmonics in switching power supplies are inevitable, and as long as certain technical measures are taken, the problem can be effectively solved. Therefore, in the use and design of switching power supplies, it is necessary to fully consider the situation of harmonics and brainstorm to adopt correct and effective solutions to ensure the efficiency of modern electronic devices and the stability of the system.
The hazards of harmonics in switching power supplies
1. Harm to the switching power supply itself
The harmonics generated by switching power supplies at high frequencies can increase the heat generated by the internal friction of the switching tubes, increasing the risk of damage.
2. Causing harm to the load
The output harmonics of switching power supplies can have an impact on the load, which can easily damage components in the circuit, especially affecting precision instruments and medical equipment.
3. Causing harm to the power grid
After the output harmonics of the switching power supply, they will propagate through the power grid, increasing the harmonic current of the power grid, causing problems such as power grid overload, cable temperature rise, and damage to the iron core of the power transformer, thereby affecting stability.
