Table 5: Relevant parameters of the demonstrator other than in Table 3. The rows in bold are only relevant for a circuit simulation of the demonstrator with ground converters.

Parameter Symbol Value Comment

Design choices
Number of drivetrain groups2Demonstrator design
Number of cable pairs per drivetrain group1Demonstrator design

Rated values
Rated voltage 24 VA 12 V lead acid battery was used as a UPS (or generally as a power supply)
Rated power Wapprox. value for used RC rotor drives
Rated current of one drivetrain 5 ATwo drivetrain groups

Filter capacitances
Capacitors C2# 2.2 mFCapacitance of built rotor drives
Capacitors 2 C1p# = 2 C1n# C2# Capacitance of built rotor drives

Parasitic resistances
Ground wire resistance R1# + R2# = R3# + R4# 0.01 Estimated
Resistance of one wire0.01 ΩEstimated for used wires including connectors
Resistance of one cable shield 0.01 Ω Estimated for used wires including connectors
Resistance of parallel tether shields R10#Only single cable used to emulate shield, therefore no parallel shields in a drivetrain
Resistance of other shields RoNo further drivetrains/shields used

Fuse ratings
Fuse timings 2 ms Selected

Kite converter control parameters
Imbalance-voltage turn-off threshold Imbalance not measured and not used
Imbalance-voltage turn-off threshold 0.33Urin simulation with ground converter: same as in Table 3

UPS voltage source U1# = U2# If no ground converters used, batteries are the only voltage source
UPS voltage source U1# = U2# U#,set/2i.e., 90 of normal voltage

Parameters for acceptance criteria
Maximum wire steady-state current If the voltages of the batteries are not exactly equal, in S5 and S13 up to twice the rated current can be expected in steady-state, i.e. in the worst case one drivetrain group’s batteries supply both drivetrain groups