A novel ZePoC encoder for sinusoidal signals with a predictable accuracy for an AC power standard

[摘要] In this paper we present an analytical formulation of a Zero Position Coding(ZePoC) encoder for an AC power standard based on class-D topologies. Forcontrolling a class-D power stage a binary signal with special spectralcharacteristics will be generated by this ZePoC encoder for sinusoidalsignals. These spectral characteristics have a predictable accuracy within aseparated baseband to keep the noise floor below a specified level.Simulation results will validate the accuracy of this novel ZePoC encoder.For a real-time implementation of the encoder on a DSP/FPGA hardwarearchitecture a trade-off between accuracy and speed of the ZePoC algorithmhas to be made. Therefore the numerical effects of different floating pointformats will be analyzed.

[学科分类] 电子、光学、磁材料