Resonant converter power line conditioner: design and evaluation

The operation, design, and implementation of a power line conditioner (PLC) utilizing the principles of a resonant converter are described. The proposed PLC uses a L-C circuit which resonates at a high frequency. The PLC is connected in parallel with a load, and it injects high-frequency resonant current pulses into the supply lines so that the resultant line current closely approximates a sine wave in phase with the supply voltage. The PLC should achieve high efficiency by reducing switching losses, is economical in terms of size and cost, and has simplicity of control. Results of computer simulation of the PLC for several typical loads indicate a high level of performance. Experimental results from a single-phase laboratory prototype are compared with the performance predicted by computer simulations.<
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