Power conversion circuit

Details Power conversion circuit Power conversion circuit

H - Electricity

02

M

321/40

H02M 7/525 (2006.01) H02P 25/08 (2006.01) H02M 7/515 (2006.01)

Patent

CA 1189568

A B S T R A C T This invention is an arrangement for driving a multi-phase switched reluctance motor from a two-point d.v. supply (11) in which capacitors (12) and (13) are provided across the supply with their common point (14) constituting a third power supply point. The load windings W1, W3, W5 and W2, W4, W6 are connected in two different load circuits connected across the different capacitors, and arrangements including diodes D1 - D6 are provided for enabling a winding to return energy to the supply when it is not being used to provide driving torque. In order to prevent the voltage of the third point wandering because the currents in the two load circuits are not the same, voltage metering means (M3, M4 or M5, or N1, N2) are provided, and they tend to compensate for any variation in the potential of the common point. Control means (21) can control the distribution of current between the various load windings by appropriate control of semi-conductor switches in the various load circuits.

410891

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