Rotating Stator Electric Motor for High Output
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Solution Overview
Problem
Existing electric motors face challenges in achieving higher efficiency and output, particularly in utilizing the rotational force of the stator for rotor rotation while minimizing energy loss and counter electromotive force.
Innovation Solution
The electric motor design incorporates a stator rotating mechanism that allows the stator to rotate in the same direction as the rotor, using the rotational force of the stator to enhance rotor rotation, and includes a reverse rotation preventing unit and a controller to manage current flow and frequency, enabling efficient energy transfer and reducing power loss by generating electric power from excess torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the stator is made stationary to simplify the structure, then the device complexity is reduced, but the output and efficiency are limited
Solution Approach 1:
The patent inverts the conventional motor structure by making the stator rotatable instead of stationary. The stator is supported by a stator rotating mechanism that allows it to rotate in the same direction as the rotor, while the rotor remains relatively stationary or rotates at a different speed. This inversion enables the stator to contribute its rotational force to the overall output, thereby increasing power without proportionally increasing structural complexity.
Solution Approach 2:
The patent introduces dynamic characteristics to the stator by enabling it to rotate through a stator rotating mechanism. This mechanism includes bearings and support structures that allow the stator to dynamically adjust its rotational speed and direction. The controller dynamically controls the drive current to coordinate the rotation of both stator and rotor, optimizing power output under varying load conditions.
2Power
If the stator rotates at high speed to increase output, then the power increases, but counter electromotive force and energy loss increase
Solution Approach 1:
The patent implements feedback control through a controller that monitors the rotational speeds of both the stator and rotor, as well as the drive current. The controller adjusts the drive current frequency and magnitude based on feedback signals to maintain optimal operating conditions. This feedback mechanism prevents excessive counter electromotive force by coordinating the rotation speeds of stator and rotor, thereby reducing energy loss while maintaining high power output.
Solution Approach 2:
The patent changes the operational parameters by allowing the stator to rotate at controlled speeds rather than remaining stationary. The controller dynamically adjusts the drive current frequency and the stator's rotational speed to optimize the balance between power output and energy loss. By varying these parameters in response to load conditions, the system achieves high output while minimizing counter electromotive force and associated energy losses.
3Reliability
If a reverse rotation preventing unit is added to control rotation direction, then the reliability improves, but the device complexity increases
Solution Approach 1:
The patent introduces a reverse rotation preventing unit as an intermediary mechanism between the drive current source and the stator-rotor system. This unit, which may include one-way bearings or clutch mechanisms, selectively allows rotation in the desired direction while preventing reverse rotation. The controller acts as another intermediary, coordinating the operation of this mechanical unit with the electrical drive signals to ensure reliable unidirectional rotation without requiring complex control systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design achieves higher output by combining stator and rotor rotational forces, reduces energy loss, and minimizes counter electromotive force, leading to increased efficiency and energy savings.
Implementation Method 1
the rotor 30 is configured to be rotated when a drive current flows through the plurality of coils 42
Implementation Method 2
the stator 40 is rotated so that the rotor is rotated by the rotational force of the stator 40 in addition to the rotational force generated by the drive current
Implementation Method 3
the plurality of coils 42 of the stator 40 generates electric power by an amount exceeding the limitation torque T0 so that a part of the drive current is compensated by a current generated by the electric power
Data Source
AI summary
A stator of an electric motor is rotated and a rotational force of the stator is used for a rotation of a rotor. Thus, the electric motor capable of obtaining high output is provided. A stator 40 is rotated in electric motors 80a, 80b. When rotating a rotor 30, a rotational force of the stator 40 is used for a rotation of the rotor 30. Consequently, higher output can be obtained compared to the conventional electric motor. In addition, the rotational force of the rotor 30 is accumulated as the rotational force of the stator 40 as kinetic energy. In case of a restarting or the like, since the rotational force of the stator 40 is used for the rotation of the rotor 30 as the kinetic energy, the energy loss is small and the kinetic energy of the rotor 30 and the stator 40 can be efficiently used. In addition, in the operation area where the stator 40 is rotated, counter electromotive force Ke or inductive reactance XL applied to coils 42 is reduced. Consequently, the loss is suppressed and the supply power can be efficiently used.