VFD Challenges for Shipboard Electrical Power System Design

Appendices

Appendix A Equations

(1)

(2)

(3)

(4)

(5)

• RMS amplitude of voltage at the harmonic order “h”
• RMS amplitude of the 60 Hz fundamental voltage

(6)

(7)

(8)

Electromagnetic or Inductive Coupling

1. The magnitude of the electromagnetic coupled voltage depends on
   1. The rate of current change
      (9)
   2. Separation distance of the conductor from the source of disturbance