Cross coupled current regulator.

摘要

A current regulator for a variable frequency power supply includes a proportional (51q; 51d) plus integral circuit (52q, 53q; 52d; 53d) that produces a composite control output signal (5; 6) for each phase. To improve the performance of the current regulator at higher frequencies, the composite control output signal for each phase also includes a cross coupled component (55q, 56q; 55d, 56d) which is produced by multiplying a d.c. signal (10) proportional to frequency times an integrator (53q; 53d) output signal from another phase. The composite control signals (5; 6) are applied to a voltage source inverter which produces the output currents to a load.