The Linear Chūō Shinkansen’s 500 km/h performance depends on more than superconducting magnets—its substations are critical. JR Central is deploying ~10 substations between Shinagawa and Nagoya, each leveraging cutting-edge power electronics to convert and control electricity with precision. Unlike conventional rail systems, where power conversion equipment is onboard, Linear’s design shifts these components—including inverters, converters, and propulsion coil polarity controllers—to ground-level infrastructure (guideway/substations). This reduces train weight, a key factor in achieving high-speed, levitated travel.
At 500 km/h, each train consumes ~35 MW of power, comparable to a mid-sized data center. Energy demand scales with the square of speed, but Linear mitigates this through lightweight vehicle design, aerodynamic optimization, and ground-based power systems, limiting the increase to ~3x that of Shinkansen trains. The substations’ high-efficiency power conversion and real-time control of propulsion coils are central to this achievement.
Source: Nikkei xTech, April 17, 2026 Accessed 2026-04-18 https://xtech.nikkei.com/atcl/nxt/mag/n ... 146/00003/
.
- 2026-04-18_Nikkei_01
Source: https://cdn-xtech.nikkei.com/atcl/nxt/m ... 65zu02.jpg Accessed 2026-04-18 https://xtech.nikkei.com/atcl/nxt/mag/n ... 146/00003/
