Universal loading test system for electromagnetic compatibility of commercial vehicle and passenger vehicle power systems

The invention discloses a universal loading test system for electromagnetic compatibility of commercial vehicle and passenger vehicle power systems. The universal loading test system comprises a testbench body, an anechoic chamber, a shielding control chamber and a shielding anechoic chamber. The test bench body comprises a dynamometer, a dynamometer base, a through-wall shaft, a step-up gear box, a tool steel frame and a tool base; the through-wall shaft is connected with the step-up gear box through an insulating elastic coupler, the low-speed shaft of the step-up gear box is used for electromagnetic compatibility loading test of a commercial vehicle power system and a passenger vehicle power assembly, and the high-speed shaft of the step-up gear box is used for electromagnetic compatibility loading test of a passenger vehicle motor. The anechoic chamber comprises a wave absorbing wedge, an antenna, a shielding type data acquisition box, a test table and a grounding copper bar. Theelectromagnetic compatibil