Motor control and power systems and methods of operation thereof

A power system for a motor, which comprises:

• rectifier connected directly for continuously supplying power from a power source to a motor;
• reactive means connected to a derive its energy from the power source for supplying power to the motor;
• means for sensing that the motor requires power in addition to the power supplied by the rectifier;
• means responsive to the sensing means for supplying power from the reactive meansto the motor at least during a period when the rectifier is supplying power to the motor, and
• means for maintaining the reactive means in a disconnected state from the motor unless and until the motor demands additional power.

A power system for a motor, which comprises:

• rectifier connected directly for continuously supplying power from a power source to a motor;
• reactive means connected to derive its energy from the power source for supplying power to the motor;
• means for sensing the condition of the motor to determine when additional power is required by the motor;
• means for connecting the reactive means to the sensing means to power at least a portion of the sensing means during periods when the sensing means is operational;
• means responsive to the sensing means determining that the motor requires additional power for connecting the reactive means directly across the motor to supply the additional power, and
• means for maintaining he reactive means in a disconnected state from the motor unless and until the motor demands additional power.

A power system for a motor, which comprises:

• rectifier connected directly for continuously supplying power from a power source to a motor;
• reactive means connected to derive its energy from the power source for supplying power to the motor;
• means for detecting a change in a load-related parameter associated with the operation of the motor as an indication of a demand from the motor for a boost of power;
• means responsive to a detected change in the parameter for supplying power from the reactive means to the motor, and
• means for maintaining the reactive means in a disconnected state from the motor unless and until the motor demands additional power.

A power system for a motor, which Comprises:

• rectifier connected directly for supplying power continuously from a power source to a motor;
• reactive means connected to derive its energy from the power source for boosting the power applied to the motor from the rectifier;
• means responsive to a demand from the motor for selectively operating the reactive means to supply boosted power to the motor, and
• means for maintaining the reactive means in a disconnected state from the motor unless and until the motor demands the boosted power.

A power system for a motor, which comprises:

• a primary source of D.C. power;
• rectifier connected directly for applying power from the primary source to a motor;
• a secondary reactive source of D.C. power connected to derive its energy from the primary source;
• means for sensing an operating condition of the motor which is indicative of a demand from the motor for a boost of power;
• means for connecting the motor and the secondary reactive source of D.C. power in a series loop;
• means responsive to a sensed demand from the motor for operating the connecting means to connect the motor and the secondary reactive source of D.C. power in the series loop to thereby provide additional power to the motor at least during a period when power from the primary source is being applied to the motor, and
• means for maintaining the secondary reactive source in a disconnected state from the motor unless and until the motor demands additional power.

A method of supplying power to a motor, which comprises the steps of:

• supplying power continuously to a motor connected directly from a rectifier to operate the motor;
• monitoring the speed of the motor as a representation of a need for additional power;
• supplying additional power, from an additional source which is a reactive source deriving its energy from the rectifier, to the motor in response to a detected need therefor through the monitoring of the speed of the motor, and
• maintaining the additional source in a disconnected state from the motor unless and until the additional power is supplied to the motor in response to the detected need.

A power system for supplying power to a load, which comprises:

• rectifier connected directly for supplying power from a power source to the load;
• reactive means connected to derive its energy from the power source for supplying power to the load;
• means for sensing that the load requires power in addition to the power supplied by the rectifier;
• means responsive to the sensing means for supplying power from the reactive means to the load at least during a period when the rectifier is supplying power to the load, and
• means for maintaining the reactive means in a disconnected state from the load unless and until the load demands additional power.

A power-operated device, which comprises:

• a drivable element;
• a motor coupled to the drivable element for driving the element;
• a power source;
• rectifier connected directly for applying power from the power source to the motor;
• a secondary source of D.C. power which is a reactive source deriving its energy from the power source;
• means for sensing an operating condition of the motor which is indicative of a demand from the motor for a boost of power;
• means for connecting the motor and the secondary source of D.C. power in a series loop;
• means responsive to the sensed demand from the motor for operating the connecting means to connect the motor and the secondary source of D.C. power in the series loop to thereby provide additional power to the motor at least during a period when power from the power source is being applied to the motor, and
• means for maintaining the secondary source in a disconnected state from the motor unless and until the motor demands additional power.

A power system for a motor, which comprises:

• a power source;
• rectifier connected directly for applying power from the power source to a motor for providing a pulsating D.C. voltage to the motor;
• a secondary source of D.C. power which includes means for filtering the pulsating D.C. voltage to effectively develop an enhanced voltage of higher average level than the pulsating D.C voltage;
• means for sensing an operating condition of the motor which is indicative of a demand from the motor for a boost of power;
• means for connecting the motor and the secondary source of D.C. power in a series loop;
• and
• means responsive to the sensed demand from the motor for operating the connecting means to connect the motor and the secondary source of D.C. power in the series loop to thereby provide additional power to the motor at least during a period when power from the power source is being applied to the motor.