ELECTRIC POWER CONVERSION APPARATUS

Organization Name

Inventor(s)

Kenichi Fukuno of Chiyoda-ku, Tokyo (JP)

Takaharu Ishibashi of Chiyoda-ku, Tokyo (JP)

ELECTRIC POWER CONVERSION APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18548255 titled 'ELECTRIC POWER CONVERSION APPARATUS

The patent application describes an electric power conversion apparatus that includes voltage detection means and a control device to manage semiconductor switching elements in bridge circuits.

Voltage detection means detect voltages in both bridge circuits.
The control device calculates the phase difference between the outputs of the two bridge circuits based on voltage values and an electric power command value.
It includes a phase difference operation part, a compensation amount operation part, and a PWM signal generation part.
The compensation amount operation part calculates an amount to correct errors caused by the phase difference.
The PWM signal generation part generates gate signals for the semiconductor switching elements based on the results of the phase difference and compensation amount operations.

Potential Applications: - Renewable energy systems - Electric vehicles - Industrial power systems

Problems Solved: - Efficient power conversion - Precise control of semiconductor switching elements

Benefits: - Improved energy efficiency - Enhanced power system stability - Reduced maintenance costs

Commercial Applications: Title: "Advanced Electric Power Conversion Technology for Renewable Energy Systems" This technology can be utilized in solar inverters, wind turbine converters, and electric vehicle chargers, offering more efficient and reliable power conversion solutions for the renewable energy industry.

Questions about the technology: 1. How does this electric power conversion apparatus improve energy efficiency in renewable energy systems? - This technology optimizes the control of semiconductor switching elements, reducing energy losses and improving overall system efficiency.

2. What are the potential cost savings associated with implementing this technology in industrial power systems? - By enhancing power system stability and efficiency, this technology can lead to reduced maintenance costs and increased operational savings for industrial applications.

Original Abstract Submitted

An electric power conversion apparatus according the present disclosure includes: voltage detection means which detects the voltages of both bridge circuits, and a control device which controls the semiconductor switching elements of both bridge circuits. The control device includes a phase difference operation part which calculates a phase difference between the output of the first bridge circuit and the output of the second bridge circuit, based on the voltage values of both bridge circuits which are detected by the voltage detection means and an electric power command value; a compensation amount operation part which calculates a compensation amount which compensates an error due to the phase difference; and a PWM signal generation part which generates gate signals of the semiconductor switching elements, from a first operation result of the phase difference operation part and a second operation result of the compensation amount operation part.