Hiroyuki Enokijima

Title: Hiroyuki Enokijima: Innovator in Control Devices

Introduction

Hiroyuki Enokijima is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of control devices for converters. His innovative work has led to the filing of a patent that showcases his expertise and creativity.

Latest Patents

Hiroyuki Enokijima holds a patent for a "Control device for converter." This invention involves a sophisticated control mechanism where a phase corrector rectifies errors in the phase of an AC power supply detected by a phase detector. The device includes a current coordinate transformer that converts detected values of three-phase currents into dq-axes currents using the corrected phase. Additionally, a current controller calculates a voltage command to ensure that the current commands of the converter align with the dq-axes currents. The voltage coordinate transformer then converts this voltage command into three-phase voltage commands. An estimator is also integrated to estimate the inductance of a reactor using the voltage commands and dq-axes currents. The phase corrector further refines the phase detection error by utilizing the voltage commands, dq-axes currents, and the reactor's impedance. The current controller updates the current control gain based on the inductance estimated by the estimator.

Career Highlights

Hiroyuki Enokijima is currently employed at Mitsubishi Electric Corporation, a leading company in the field of electrical and electronic equipment. His role involves working on advanced technologies that enhance the efficiency and performance of electrical systems. His dedication to innovation has positioned him as a key figure in his organization.

Collaborations

Hiroyuki has collaborated with esteemed colleagues such as Takeshi Okamoto and Yasushi Otsuka. Their combined expertise has contributed to the successful development of various projects within Mitsubishi Electric Corporation.

Conclusion

Hiroyuki Enokijima's contributions to the field of control devices exemplify his innovative spirit and technical prowess. His patent for a control device for converters highlights his ability to solve complex engineering challenges. Through his work at Mitsubishi Electric Corporation, he continues to make strides in advancing electrical engineering technologies.