In Hwan Ra

Title: In Hwan Ra: Innovator in Washing Machine Technology

Introduction

In Hwan Ra is a notable inventor based in Kyunggi-do, South Korea. He has made significant contributions to the field of washing machine technology, holding 2 patents that enhance the efficiency and functionality of these appliances.

Latest Patents

One of his latest patents is an "Apparatus and method for braking a washing machine." This invention outlines a method for braking a washing machine that involves setting up initial data of a duty ratio corresponding to a detected speed and rotating position. The method includes discharging a voltage of the capacitor filter during a duty-on cycle according to the established duty ratio and charging the voltage during the duty-off cycle. This innovative approach eliminates the need for a dynamic braking resistor, thereby reducing both the size and production costs of the washing machine.

Another significant patent is the "Method for braking a washing machine." This invention details a process that determines whether a motor is braking and transmits a PWM (Pulse Width Modulation) control signal based on the voltage flows in the system. It compares the capacity and variance of the detected voltage with a predetermined reference voltage and controls the motor driver until the motor stops, ensuring efficient braking.

Career Highlights

In Hwan Ra is currently employed at LG Electronics Inc., a leading company in the electronics industry. His work focuses on developing innovative solutions that improve the performance of household appliances, particularly washing machines.

Collaborations

He has collaborated with notable coworkers, including Sang Chul Youn and Joo Hwan Lee, contributing to advancements in washing machine technology.

Conclusion

In Hwan Ra's contributions to washing machine technology through his patents demonstrate his commitment to innovation and efficiency in household appliances. His work continues to influence the industry and improve user experiences.