Single-phase phase locked loop suitable for use in a hybrid vehicle charging system and method for charging a hybrid vehicle from a single-phase power source

摘要

Apparatus for charging an electric vehicle or a hybrid vehicle are provided. Particularly, apparatus for charging a hybrid vehicle from a single-phase standard (110 volt, single-phase, 60 Hz in the U.S.) are provided. In one implementation, a single-phase phase locked loop (PLL) receives a single-phase power gird voltage and delays it by one-quarter cycle to create an orthogonal imaginary second power signal. These signals are then applied to a transform matrix within a PLL to phase lock an output signal to the incoming power grid voltage.