The voltages at the midpoints of each leg of an inverter which feeds a PM synchronous motor, are described by approximate expressions as given below. (This neglects the high frequency ripple.)
vro = 15 + 7.5 cos(100t),
vyo = 15 + 7.5 cos(100t + 2/3),
vbo = 15 + 7.5 cos(100t - 2/3)
As clear from the expressions, each pole voltage has a DC component and an alternating component. Determine the effective magnitude of DC component of each phase current when this set of voltages are applied across the motor. Each phase winding of the motor has a resistance of 0.5 Ω.
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Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit. ... A potential difference of one Volt is equal to one Joule of energy being used by one Coulomb of charge when it flows between two points in a circuit.An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume.
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