What are the conditions for generating series resonance? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV.
Impedance condition, after resonance, the imaginary parts are equal in sign and opposite in sign. The series impedance is equal to 0, and the parallel impedance is equal to infinity. At resonance, the resonant current of the series circuit is infinite; The resonant voltage of a parallel circuit is infinite (theoretical value). In a series circuit of resistors, capacitors, and inductors, the phenomenon of power supply, voltage, and current being in phase occurs, which is called series resonance. Its characteristics are: the circuit is purely resistive, the power supply, voltage, and current are in phase, the reactance X is equal to 0, and the impedance Z is equal to the resistance R. At this time, the impedance of the circuit is the smallest and the current is the largest, which may generate high voltage on the inductor and capacitor that is many times larger than the power supply voltage. Therefore, series resonance is also known as voltage resonance.
Parallel resonance: In parallel circuits of resistors, capacitors, and inductors, the phenomenon of the circuit terminal voltage and total current being in phase occurs, which is called parallel resonance. Its characteristics are that parallel resonance is a complete compensation, and the power supply does not need to provide reactive power, only the active power required by the resistor. During resonance, the total current of the circuit is minimized, and the branch current is often greater than the total current in the circuit. Therefore, parallel resonance is also called current resonance.; In a circuit where resistors, capacitors, and inductors are connected in series, the role of inductive reactance Xl and Xc is directly subtracted. If certain conditions are met, such that Xl=Xc, the reactance of the circuit is equal to zero, the current and voltage phases in the circuit are the same, and there is no reactive power exchanged between the resistor, inductor, or capacitor. This state of the circuit is called series resonance. The resonance condition of the circuit is Xc=Xl, that is, ω L=1/ω C, from which the inherent resonance condition of the circuit can be obtained as f0=1/(2 π√ LC).
Impedance condition: After resonance, the imaginary parts are equal and have opposite signs. The series impedance is equal to 0, and the parallel impedance is equal to infinity. At resonance, the resonant current of the series circuit is infinite; The resonant voltage of a parallel circuit is infinite (theoretical value). Or in other words: (1) In a series circuit, the imaginary part of the total input impedance is equal to zero (resonance means that the output voltage and current are in phase). (2) In a parallel circuit, the imaginary part of the total input admittance is zero.