Commutating device for an electric motor supplied from a d-c vol

Details Commutating device for an electric motor supplied from a d-c vol Commutating device for an electric motor supplied from a d-c vol

1982-09-28

1985-01-15

Truhe, J. V.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318254, 363132, H02K 2300

Patent

active

044940491

ABSTRACT:
In a commutating device for an electric motor which is supplied from a d-c voltage source, which includes semiconductor switching elements arranged in a bridge circuit and addressed by means of a control voltage in dependence on the rotor position of the motor, in order that the semiconductor switching elements can be addressed without transformers and without separate control voltage sources, the residual voltage dropping across the load circuit of the semiconductor switching elements and/or the inverse voltage stored in the respectively preceding cut-off phase is used as the control voltage.

REFERENCES:
patent: 4047081 (1977-09-01), Liska
patent: 4310866 (1982-01-01), Wirth
patent: 4330819 (1982-05-01), Foch
patent: 4336587 (1982-06-01), Boettcher
patent: 4370701 (1983-01-01), Western
patent: 4374347 (1983-02-01), Muller

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