Comparative Study of Two Methods for Driving Electrodynamic Zero-Net Mass-Flux Actuators

摘要

In this Note, the relative merits of two methods of driving an electrodynamically driven zero-net mass-flux (eZNMF) actuator (constant-voltage amplitude and constant-current amplitude) have been evaluated. In the constant-voltage method, the maximum joule heating is developed at the lowest frequency of operation, where the actuator impedance is lowest and the current is the highest. In the constant-current method, the joule heating in the coil is the same at all frequencies. As a consequence, and assuming that the current in the coil is a major limiting factor of eZNMF actuators, the constant-current mode of operation pushes the actuator to its full performance potential across all frequencies of operation.