Strong nonreciprocal thermal radiation based on topological edge state in one-dimensional photonic crystal with Weyl semimetal

•Realizing tunable strong nonreciprocal thermal radiation by excitation of the TES without any external magnetic field.•The local field enhancement of TES plays a positive role in the realization of strong nonreciprocal thermal radiation.•Almost completely violate Kirchhoff's laws over a broad range of incident angles and frequencies.•The model is useful for design and application in nonreciprocal thermal emitters.