18248797. POWER CONVERSION DEVICE simplified abstract (Mitsubishi Electric Corporation)

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POWER CONVERSION DEVICE

Organization Name

Mitsubishi Electric Corporation

Inventor(s)

Hayato Takeuchi of Chiyoda-ku, Tokyo (JP)

Takato Toi of Chiyoda-ku, Tokyo (JP)

Takaharu Ishibashi of Chiyoda-ku, Tokyo (JP)

POWER CONVERSION DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18248797 titled 'POWER CONVERSION DEVICE

Simplified Explanation

The patent application describes a power conversion device that aims to prevent an increase in ripple due to changes in switching frequency. The device includes semiconductor switching elements, a reactor, a control unit, and voltage and current detectors.

  • The power conversion device includes semiconductor switching elements connected in series between a DC voltage source and an output side.
  • A reactor is also included in the device.
  • A control unit is responsible for controlling the switching frequency of each semiconductor switching element.
  • The device also includes voltage and current detectors to measure the input voltage, output voltage, and inductor current.
  • The switching frequency and voltage/current detection are synchronized with a carrier signal.

Potential Applications

  • Power conversion devices used in various industries such as renewable energy systems, electric vehicles, and industrial automation.
  • Any application that requires efficient power conversion with minimal ripple.

Problems Solved

  • Ripple increase due to changes in switching frequency is prevented.
  • Provides a more stable and reliable power conversion process.

Benefits

  • Improved power conversion efficiency.
  • Reduced ripple in the output voltage.
  • Enhanced reliability and stability of the power conversion device.


Original Abstract Submitted

An object is to obtain a power conversion device that can prevent ripple from increasing owing to change in switching frequency. A power conversion device includes: semiconductor switching elements connected between a DC voltage source and an output side, and connected in series to each other; a reactor; a control unit which controls a switching frequency of each semiconductor switching element; and a voltage detector, a voltage detector, and a current detector which respectively detect a voltage value of an input voltage, a voltage value of an output voltage, and a current value of an inductor current. Changing of the switching frequency and detection of the voltage value of the input voltage, the voltage value of the output voltage, and the current value of the inductor current are each performed at a timing that allows synchronization with a carrier.

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