18559838. MOTOR CONTROL DEVICE, ELECTROMECHANICAL INTEGRATED UNIT, HYBRID SYSTEM, ELECTRIC POWER STEERING SYSTEM, AND MOTOR CONTROL METHOD simplified abstract (HITACHI ASTEMO, LTD.)
MOTOR CONTROL DEVICE, ELECTROMECHANICAL INTEGRATED UNIT, HYBRID SYSTEM, ELECTRIC POWER STEERING SYSTEM, AND MOTOR CONTROL METHOD
Organization Name
Inventor(s)
Takaya Tsukagoshi of Hitachinaka-shi (JP)
Katsuhiro Hoshino of Hitachinaka-shi (JP)
Shigehisa Aoyagi of Hitachinaka-shi (JP)
MOTOR CONTROL DEVICE, ELECTROMECHANICAL INTEGRATED UNIT, HYBRID SYSTEM, ELECTRIC POWER STEERING SYSTEM, AND MOTOR CONTROL METHOD - A simplified explanation of the abstract
This abstract first appeared for US patent application 18559838 titled 'MOTOR CONTROL DEVICE, ELECTROMECHANICAL INTEGRATED UNIT, HYBRID SYSTEM, ELECTRIC POWER STEERING SYSTEM, AND MOTOR CONTROL METHOD
Simplified Explanation: The patent application describes a motor control device that regulates the operation of an AC motor connected to a power transformer converting DC power to AC power. The device generates a driving force for the motor through a speed reducer and includes components like a carrier generator, carrier frequency adjuster, and gate signal generator to control the power transformer operation.
- Carrier generator generates a carrier wave.
- Carrier frequency adjuster adjusts the frequency of the carrier wave.
- Gate signal generator performs pulse width modulation on a voltage command based on a torque command using the carrier wave to generate a gate signal for controlling the power transformer.
- Carrier frequency adjuster changes the phase difference between the voltage command and the carrier wave based on the torque command and motor speed, adjusting the carrier wave frequency to ensure the meshing frequency of the speed reducer and harmonic component of the fundamental harmonic current fall within a predetermined range.
Key Features and Innovation:
- Generation of carrier wave for motor control.
- Adjustment of carrier wave frequency based on torque command and motor speed.
- Control of power transformer operation through pulse width modulation.
- Optimization of carrier wave frequency to match speed reducer and harmonic component frequencies.
Potential Applications: The technology can be applied in various industrial settings where precise control of AC motors is required, such as manufacturing, robotics, and automation.
Problems Solved: The technology addresses the need for efficient and accurate control of AC motors connected to power transformers, ensuring optimal performance and energy efficiency.
Benefits:
- Improved motor control accuracy.
- Enhanced energy efficiency.
- Reduced wear and tear on motor components.
- Increased overall system performance.
Commercial Applications: Title: Advanced Motor Control Device for Industrial Applications This technology can be utilized in industrial machinery, robotics, and automation systems to enhance performance, energy efficiency, and overall operational control.
Prior Art: Readers can explore prior art related to motor control devices, power transformers, and pulse width modulation techniques in industrial applications.
Frequently Updated Research: Stay updated on the latest advancements in motor control technology, power electronics, and industrial automation for potential improvements and innovations in this field.
Questions about Motor Control Devices: 1. What are the key components of a motor control device? 2. How does pulse width modulation affect motor performance and efficiency?
Original Abstract Submitted
A motor control device controls driving of an AC motor that is connected to a power transformer that performs power transform from DC power to AC power and outputs a rotational driving force generated by driving using the AC power via a speed reducer, and includes a carrier generator that generates a carrier wave, a carrier frequency adjuster that adjusts a frequency of the carrier wave, and a gate signal generator that performs pulse width modulation on a voltage command according to a torque command using the carrier wave and generates a gate signal for controlling an operation of the power transformer, wherein the carrier frequency adjuster changes a phase difference between the voltage command and the carrier wave based on the torque command and a rotational speed of the AC motor, and adjusts the frequency of the carrier wave such that a difference between a meshing frequency of the speed reducer and a harmonic component of a fundamental harmonic current according to the voltage command falls within a predetermined range.
