Power point tracking

摘要

A local power converter may include a controller to manipulate the operating point of a local power converter to cause the power point tracking feature of a central power converter to operate at a point determined by the controller. In some embodiments, the controller can manipulate the operating point of the local power converter by alternating between at least two modes. In some other embodiments, the controller can manipulate the operating point of the local power converter to provide a substantially constant slope. In some other embodiments, the controller can maintain a substantially constant impedance ratio. In some other embodiments, the controller enables perturbations from the power point tracking feature of the central power converter to reach the power source.

主权项

1. A local power converter comprising:
a power conversion stage to transfer power from a power source to a central power converter having a power point tracking feature; and a controller configured to manipulate the operating point of the local power converter and further configured to generate an instruction providing a direction in which to move along a power point curve of the central power converter, the instruction causing the power point tracking feature of the central power converter to perform an operation to adjust a voltage or a current to achieve an optimal point for operation of the central power converter, the optimal point for operation of the central power converter determined by the controller of the local power converter.