Motor system having a thyristor commutator

Claim 2

A motor system comprising: rotating machine means having a stationary poly phase winding and a rotary poly phase winding and a first power source therefor; switching means successively connecting the individual windings of one of said poly phase windings to a second electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; said first power source comprising poly phase alternating current source means of a given frequency for exciting the other of said poly phase windings; and distributor means, responsive to the relative electrical positions between the winding voltages induced in the individual windings of said one of said poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the connecting operation of said switching means.

Claim 3

A motor system according to claim 1, wherein said switching means comprises: a plurality of thyristors, pairs of which are connected in series across said second electrical power source, the number of pairs of said thyristors being equal to the number of the poly phase windings, and wherein the control electrodes of said thyristors are connected to the output of said distributor means, the common connection of each respective series pair of thyristors being connected to a separate one of said individual windings of said one of said poly phase windings.

Claim 4

In a motor control system having rotating machine means having a stationary poly phase winding and a rotary poly phase winding; switching means for successively connecting the individual windings of one of said poly phase windings to an electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; poly phase alternating current source means of a given frequency for exciting the other of said poly phase windings; and distributor means, responsive to the relative electrical positions between the winding voltages induced in the individual windings in said one of said poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the connecting operation of said switching means; the method of controlling the frequency of the line voltage provided at the winding terminals of said stationary poly phase winding, comprising the steps of: maintaining the frequency of said poly phase alternating current source means constant; and controlling the rotational speed of said rotary poly phase windings, whereby the frequency of said line voltage will be proportional to the rotational speed of said rotary poly phase windings.

Claim 5

In a motor control system having rotating machine means having a stationary poly phase winding and a rotary poly phase winding; switching means for successively connecting the individual windings of one of said poly phase windings to an electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; poly phase alternating current source means of a given frequency for exciting the other of said poly phase windings; and distributor means, responsive to the relative electrical positions between the winding voltages induced in the individual windings in said one of said poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the connecting operation of said switching means; the method of controlling the frequency of the line voltage provided at the winding terminals of said stationary poly phase winding, comprising the steps of: maintaining the frequency of said poly phase alternating current source means constant; and controlling the rotational speed of said rotary poly phase windings, whereby the frequency of said line voltage will be proportional to the rotational speed of said rotary poly phase windings.

Claim 6

In a motor system having a stationary poly phase winding and a rotary poly phase winding; switching means for successively connecting the individual windings of one of said poly phase windings to an electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; poly phase alternating current source means of a given frequency for exciting the other of said poly phase windings; and distributor means, responsive to the relative electrical positions between the winding voltages induced in the individual windings in said one of said poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the connecting operation of said switching means; the method of controlling the frequency of the winding voltage provided at the winding terminals of said stationary poly phase winding, comprising the steps of: progressively varying the excitation frequency of said poly phase alternating current source means while varying the rotational speed of said rotary poly phase winding, whereby the frequency of the voltage induced in said one of said poly phase windings may be maintained constant.

Claim 7

In a motor system having a stationary poly phase winding and a rotary poly phase winding; switching means for successively connecting the individual windings of one of said poly phase windings to an electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; poly phase alternating current source means of a given frequency for exciting the other of said poly phase windings; and distributor means, responsive to the relative electrical positions between the winding voltages induced in the individual windings in said one of said poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the connecting operation of said switching means; the method of controlling the frequency of the winding voltage provided at the winding terminals of said stationary poly phase winding, comprising the steps of: progressively varying the excitation frequency of said poly phase alternating current source means while varying the rotational speed of said rotary poly phase winding, whereby the frequency of the voltage induced in said one of said poly phase windings may be maintained constant.

Claim 8

A method in accordance with claim 4, wherein said step of progressively varying the excitation frequency of said poly phase alternating current source means includes the step of progressively increasing the excitation frequency of said poly phase alternating current source means, and wherein the step of varying the rotational speed of said rotary poly phase winding comprises the step of decreasing the rotational speed of said rotary poly phase winding.

Claim 9

A method in accordance with claim 4, wherein the step of progressively varying the excitation frequency of said poly phase alternating current source means includes the step of progressively decreasing the excitation frequency of said poly phase alternating current source means, and wherein the step of varying the rotational speed of said rotary poly phase winding comprises the step of increasing the rotational Speed of said rotary poly phase winding.

Claim 10

A motor control system comprising: rotating machine means having a stationary poly phase winding and a rotary poly phase winding and a first power source therefor; switching means for successively connecting the individual windings of one of said poly phase windings to a second electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; said first power source comprising poly phase alternating current source means of a given frequency for exciting the other of said polyphase windings; linear motor means having a plurality of primary magnetic poles, responsive to the magnetic fields generated by the flow of current through one of said poly phase windings successively connected to said electrical power source by said switching means, being connected in parallel with said one of said poly phase windings and having secondary conductors provided in opposed relationship with said primary magnetic poles; and distributor means, responsive to the relative electrical positions between winding voltages induced in the individual windings of said one of the poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the operation of said switching means.

Claim 11

A motor control system comprising: rotating machine means having a stationary poly phase winding and a rotary poly phase winding and a first power source therefor; switching means for successively connecting the individual windings of one of said poly phase windings to a second electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; said first power source comprising poly phase alternating current source means of a given frequency for exciting the other of said polyphase windings; linear motor means having a plurality of primary magnetic poles, responsive to the magnetic fields generated by the flow of current through one of said poly phase windings successively connected to said electrical power source by said switching means, being connected in parallel with said one of said poly phase windings and having secondary conductors provided in opposed relationship with said primary magnetic poles; and distributor means, responsive to the relative electrical positions between winding voltages induced in the individual windings of said one of the poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the operation of said switching means.

Claim 12

A motor control system as defined in claim 7, wherein the rotating direction of the phase rotation of said poly phase alternating current source is changeable the frequency of the voltage to energize the windings of said linear motor means being higher than the frequency to bring said linear motor means into a synchronous state at the time of powering and the frequency of the voltage to energize the windings of said linear motor means being lower than the frequency to bring said linear motor means into a synchronous state at the time of braking.

Claim 13

A motor control system as defined in claim 7, wherein said poly phase alternating current source means has phase rotations in the same direction and is capable of supplying voltages of mutually different frequencies, the frequency of the voltage for energizing the windings of said linear motor means being higher than the frequency to bring said linear motor means into a synchronous state at the time of powering and the frequency of the voltage for energizing the windings of said linear motor being lower than the frequency for bringing the linear motor means into a synchronous state at the time of braking.

Claim 14

In a motor control system having rotating machine means having a stationary poly phase winding and a rotary poly phase winding and a first power source therefor; switching means for successively connecting the individual windings of one of said poly phase windings to a second electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; said first power source comprising poly phase alternating current source means of a given frequency for exciting the other of said poly phase windings; linear motor means having a plurality of primary magnetic poles, responsive to the magnetic fields generated by the flow of current through one of said poly phase windings, successively connected to said electrical power source by said switching means, being connected in parallel with said one of said poly phase windings and having secondary conductors provided in opposed relationship with said primary magnetic poles; and distributor means, responsive to the relative electrical positions between winding voltages induced in the individual windings of said one of the poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the operation of said switching means, the method of controlling the operation of said motor, comprising the steps of: changing the rotating direction of the phase rotation of Said poly phase alternating current source and adjusting the frequency of the voltage for energizing the windings of said linear motor means and the frequency for bringing the linear motor means into a synchronous state, whereby the frequency of the voltage for energizing the windings of said linear motor will become higher than the frequency for bringing the linear motor means into a synchronous state at the time of powering and the frequency of the voltage for energizing the windings of said linear motor will become lower than the frequency for bringing the linear motor means into a synchronous state at the time of braking.

Claim 15

In a motor control system having rotating machine means having a stationary poly phase winding and a rotary poly phase winding and a first power source therefor; switching means for successively connecting the individual windings of one of said poly phase windings to a second electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; said first power source comprising poly phase alternating current source means of a given frequency for exciting the other of said poly phase windings; linear motor means having a plurality of primary magnetic poles, responsive to the magnetic fields generated by the flow of current through one of said poly phase windings, successively connected to said electrical power source by said switching means, being connected in parallel with said one of said poly phase windings and having secondary conductors provided in opposed relationship with said primary magnetic poles; and distributor means, responsive to the relative electrical positions between winding voltages induced in the individual windings of said one of the poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the operation of said switching means, the method of controlling the operation of said motor, comprising the steps of: changing the rotating direction of the phase rotation of Said poly phase alternating current source and adjusting the frequency of the voltage for energizing the windings of said linear motor means and the frequency for bringing the linear motor means into a synchronous state, whereby the frequency of the voltage for energizing the windings of said linear motor will become higher than the frequency for bringing the linear motor means into a synchronous state at the time of powering and the frequency of the voltage for energizing the windings of said linear motor will become lower than the frequency for bringing the linear motor means into a synchronous state at the time of braking.

Claim 16

In a motor control system having rotating machine means having a stationary poly phase winding and a rotary poly phase winding and a first power source therefor; switching means for successively connecting the individual windings of one of said poly phase windings to a second electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; said first power source comprising poly phase alternating current source means of a given frequency for exciting the other of said poly phase windings; linear motor means having a plurality of primary magnetic poles, responsive to the magnetic fields generated by the flow of current through one of said poly phase windings successively connected to said electrical power source by said switching means, being connected in parallel with said one of said poly phase windings and having secondary conductors provided in opposed relationship with said primary magnetic poles; and distributor means, responsive to the relative electrical positions between winding voltages induced in the individual windings of said one of the poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the operation of said switching means, the method of controlling the operation of said motor, comprising the steps of: maintaining the direction of phase rotation of said poly phase alternating current source in the same direction; and supplying, from said alternating current source, voltages at mutually different frequencies; whereby the frequency of the voltage for energizing the windings of said linear motor will become higher than the frequency for bringing on the linear motor means into a synchronous state at the time of powering and the frequency of the voltage for energizing the windings of the linear motor will become lower than the frequency for bringing the linear motor means into a synchronous state at the time of braking.

Claim 17

In a motor control system having rotating machine means having a stationary poly phase winding and a rotary poly phase winding and a first power source therefor; switching means for successively connecting the individual windings of one of said poly phase windings to a second electrical power source in a predetermined order in accordance with the relative electrical positions between said poly phase windings; said first power source comprising poly phase alternating current source means of a given frequency for exciting the other of said poly phase windings; linear motor means having a plurality of primary magnetic poles, responsive to the magnetic fields generated by the flow of current through one of said poly phase windings successively connected to said electrical power source by said switching means, being connected in parallel with said one of said poly phase windings and having secondary conductors provided in opposed relationship with said primary magnetic poles; and distributor means, responsive to the relative electrical positions between winding voltages induced in the individual windings of said one of the poly phase windings, representative of the relative electrical positions between said stationary and rotary poly phase windings, for controlling the operation of said switching means, the method of controlling the operation of said motor, comprising the steps of: maintaining the direction of phase rotation of said poly phase alternating current source in the same direction; and supplying, from said alternating current source, voltages at mutually different frequencies; whereby the frequency of the voltage for energizing the windings of said linear motor will become higher than the frequency for bringing on the linear motor means into a synchronous state at the time of powering and the frequency of the voltage for energizing the windings of the linear motor will become lower than the frequency for bringing the linear motor means into a synchronous state at the time of braking.