Mitsubishi electric corporation (20240136967). POWER CONVERSION DEVICE simplified abstract

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POWER CONVERSION DEVICE

Organization Name

mitsubishi electric corporation

Inventor(s)

Tomonori Yamada of Tokyo (JP)

POWER CONVERSION DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240136967 titled 'POWER CONVERSION DEVICE

Simplified Explanation

The patent application focuses on controlling a converter, inverter, and motor based on the rotation speed of the motor. A controller is included to adjust the switching element of the converter according to the torque and rotation speed of the motor, taking into account the losses in the system.

  • The innovation involves a controller that adjusts the switching element of a converter based on the torque and rotation speed of a motor, optimizing operation efficiency.
  • The control system responds to changes in the voltage of a DC power supply and motor operation, ensuring appropriate control for efficient performance.
  • By monitoring losses in the motor, inverter, and converter, the controller can make real-time adjustments to improve overall system performance.

Potential Applications

This technology could be applied in various industries where precise control of motor systems is required, such as electric vehicles, industrial automation, and renewable energy systems.

Problems Solved

1. Inefficient operation of motor systems due to lack of real-time control based on motor speed and torque. 2. Difficulty in optimizing performance of converters, inverters, and motors in a coordinated manner.

Benefits

1. Improved energy efficiency and performance of motor systems. 2. Enhanced reliability and lifespan of components through optimized control. 3. Potential cost savings through reduced energy consumption and maintenance.

Potential Commercial Applications

Optimizing motor control systems in electric vehicles for improved efficiency and range.

Possible Prior Art

One possible prior art could be the use of closed-loop control systems in motor drives to adjust parameters based on feedback from the motor. However, the specific focus on controlling losses in the motor, inverter, and converter based on torque and rotation speed may be a novel aspect of this innovation.

Unanswered Questions

How does the controller determine the appropriate adjustments to the switching element of the converter based on the torque and rotation speed of the motor?

The patent application does not provide detailed information on the specific algorithms or methods used by the controller to make these adjustments.

What are the potential limitations or challenges in implementing this control system in different types of motor systems?

The patent application does not address the potential challenges or limitations that may arise when implementing this control system in various motor systems with different specifications and requirements.


Original Abstract Submitted

a loss in each of a converter, an inverter, and a motor changes according to operation based on the rotation speed of the motor or the like. thus, in order to efficiently perform operation, appropriate control needs to be performed according to the voltage of a dc power supply and operation of the motor. the present disclosure is characterized by including a controller which controls a switching element of a converter according to the torque and the rotation speed of a motor on the basis of a loss in at least one of the motor, an inverter, and the converter.