AC Parametric Voltage Stabilizer and Its Harmonic Suppression Effect
1. AC parameter stabilized power supply, also known as Constant Voltage Transformers, abbreviated as CVT.
2. The main differences between constant voltage transformers and ordinary transformers are:
① Functionally, although it is a core with separate primary and secondary windings, it does not follow the proportional relationship between input and output voltage and the number of turns of the primary and secondary windings, and the output voltage does not remain constant with changes in input voltage.
② The magnetic shunt core of a constant voltage transformer has saturated and unsaturated regions in each section.
③ Parallel capacitors and compensation windings with boost resonance.
3. Main characteristics of technical parameters
① Simple structure, no control components, only composed of two individual components.
② Simple structure, high reliability, and the average time between failures are the highest among various AC stabilized power supplies.
③ High voltage stability and wide voltage stabilization range. From the source voltage effect, it can be seen that when the input voltage changes by ± 20%, the output voltage changes by ± 1.5%. When the input voltage changes by ± 30%, the output voltage changes by ± 3.5%. If the ratio of rated output load to actual load is appropriately selected, the voltage stabilization range can be extended to the optimal state. Therefore, it is particularly suitable for areas with large voltage fluctuations in the power grid.
4. Anti interference performance: CVT is a transformer that integrates voltage stabilization, isolation, and transformation. Its input and output are completely isolated, and it has good bidirectional suppression and attenuation effects on pulse interference signals of the power grid. At the same time, it has good anti-interference ability against surge impact, instantaneous sudden change, instantaneous flicker, static lightning and other interferences of the power grid.
5. Fast response time, within 40ms.
6. Overload automatic protection
When the output power exceeds the rated value, the output voltage automatically drops to ensure that the electrical equipment * * is not damaged even if the output load is short circuited. After the load short circuit is resolved, the output voltage will automatically recover; When starting up with a load or restoring power after a power outage, the output will not generate overvoltage. If there is a short-term surge of twice the grid voltage (440V), the output will not generate overvoltage surge, ensuring the * * operation of the user equipment.
7. Low waveform distortion. Due to its structural characteristics, its output waveform * * has a total harmonic distortion of less than 5%, and its distortion degree is not affected by input distortion. Even if the input voltage is a square wave, the output voltage is a sine waveform or has a "purification" effect.
