By hvhipot 
HV Hipot Electric Co., Ltd. specializes in producing series resonance (also known as AC withstand voltage testing equipment). Next, we will share with you the role of Q value in AC withstand voltage testing.
In electrical systems, many customers ask about the correlation between Q values, especially when purchasing a variable frequency series resonance test device. The Q value of the series resonance device produced by Dingsheng Power is controlled at around 36. Of cHV Hipot Electric Co., Ltd.se, the Q value is also affected by external factors such as voltage level, process structure, and material properties. In theory, the larger the Q value, the smaller the frequency offset allowed per unit current change, and the higher the frequency selectivity. Q value is the main parameter for measuring inductance, and its calculation method is: Q=energy carried by energy storage devices such as inductance and capacitance ÷ loss power of resistance.
What are the effects on the Q value of the variable frequency series resonance test device
The magnitude of Q value is influenced by comprehensive factors such as manufacturing process, raw materials, material properties, etc. For example, for the same inductor, if other parameters remain unchanged and only the thickness of the wound inductor wire is changed, the Q value of the inductor with thicker wire will be higher than that of the inductor with thinner wire. If silver is plated on the wire, the inductance wound on the silver plated wire will have a higher Q value than that wound on the non silver plated wire. Obviously, this is the influence of process structure and raw materials. For the Q value of the series resonance test device, The higher the Q value, the smaller the loss of the circuit and the higher the efficiency of the circuit. The quality and efficiency of the product can also be easily judged by the size of the Q value, but it is not the ultimate standard for determining the quality of the series resonant device. The improvement of Q value is often limited by some factors, such as the DC resistance of the conductor, the dielectric loss of the coil skeleton, the loss caused by the iron core and shielding, and the skin effect during high-frequency operation.
Is a higher Q value better?
So, should we measure the Q value when purchasing a variable frequency series resonance test device? In fact, for customers who are not familiar with it, they may think that “high Q value means good product”. Q value is only a conceptual reference, and it cannot represent the only or absolute factor of performance. For example, a high Q value may cause phenomena such as inductor burnout, capacitor breakdown, and circuit oscillation. Some technology products have very good material selection and processes, but they may find ways to reduce Q value. Therefore, Q value is only a quality factor to measure the efficiency of inductors. Therefore, when paying attention to product quality, stability and innovation should be emphasized.