Patent
Static converter with dc intermediate circuit for controlling the speed of a three phase motor
TLDR
In this article, a first controllable converter is connected to an electrical power supply source, and a second converter is attached to a three-phase electric motor having stator windings impressed by preenergizing current.Abstract:
A first controllable converter is connected to an electrical power supply source. A second controllable converter is connected to a three-phase electric motor having stator windings impressed by preenergizing current. At least one smoothing choke for controlling the speed of the motor is connected at one end to the first converter and at the other end to the second converter. A control circuit causes the voltage at the one end of the choke to follow the voltage at the other end of the choke.read more
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Patent
Method for controlling asynchronous machines
TL;DR: In this paper, a component converter has two adding amplifiers and four multipliers each having two inputs and an output, each output of the multipliers is connected to a corresponding input of the amplifiers.
Patent
A. C. motor control apparatus and method
TL;DR: In this article, the speed and torque of a multiphase a.c. motor were controlled by digital control signals in a series of discrete steps over a range of control values and the control signals are supplied periodically to the regulation circuits.
Patent
Apparatus for the field-related regulation of asynchronous machines
TL;DR: A definite commutation sequence is achieved by utilizing a sine-cosine oscillator for cyclically driving the control paths of the inverter as discussed by the authors, but the frequency of the oscillator is limited to values of one sign.
Patent
Method for controlling the output condition of a synchronous reluctance motor
TL;DR: In this paper, a means for controlling the output torque condition of a synchronous reluctance motor is presented, which consists of a motor control having a first signal means generating a torque command signal and a second signal means providing a rotor frequency signal.
Patent
Stabilizing means for an a-c motor drive
TL;DR: In this paper, an adjustable speed motor drive system including an a-c motor and power conversion means for converting d-c electric power to adjustable frequency, adjustable voltage electric power for delivery to the motor is provided with stabilizing means for damping motor speed oscillations.
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