Excitation

Figure B. 1: Capacitor loaded model of VHM

model

Figure B. 1: Capacitor loaded model of VHM

Figure B. 1 shows the equivalent circuit of a VHM connected to a resistive load and parallel capacitor. Labelled are the open circuit emf, E, the voltage at the output of the prediction model, Vm, the voltage dropped across the imaginary inductor, VL, and the load voltage VLD. The phasor representation of these voltages is given in Figure B. 2.

Figure B. 2: Voltage phasor representation of circuit

The cosine rule for triangles is given in its usual form in Equation (B.1) and rearranged in (B.2).

The resulting equations for angles for P and O are given in (B.3)and (B.4) respectively.

a is deduced to be n-O. Figure B. 3 shows the similar triangle 'abc' from Figure B. 2 re-drawn in terms of the flux linkage cutting the VHM coils, using the equivalence of (4.32).

Figure B. 3: Equivalent flux linkage phasor
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Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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