A high cell count cascade full bridge converter for wide bandwidth ultrasonic transducer excitation

An implementation of class D inverter for ultrasonic transducer mixed powder mixture

“…(8) , (9) , series resonance frequency and parallel resonance frequency can be calculated. Where [20] , [21] . …”

“…The quality factor can be calculated by Eq. (10) [20] , [21] . The input impedance of the resonance circuit of the circuit shown in Fig.…”

“… The input impedance of the resonance circuit of the circuit shown in Fig. 5 is given in Eq.11 [20] , [21] . The impedance of the BVD equivalent circuit can be calculated using Eq.…”

“…The exact points of resonance and anti-resonance values are not known. Where ω values are assumed to be the points where the impedance is maximum and minimum [20] , [21] .

Fig.5 Simulation output waveforms A) resonance circuit voltage, B) resonant circuit current.

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“…The design of Ls is designed so that the resonance frequency and switching frequency of PS are equal [20] , [21] .…”