Two-stage electrical controlling system and electrical apparatus

An electrical system, comprising:

• a first-stage conversion module, wherein the first-stage conversion module comprises a first controllable switch;
• a second-stage conversion module, wherein the second-stage conversion module is coupled to the first-stage conversion module and comprises a second controllable switch;
• a first digital signal processor, wherein the first digital signal processor is configured to control the first controllable switch, and comprises a first output crossbar switch, a first output port and a first input port;
• and
• a second digital signal processor, wherein the second digital signal processor is configured to control the second controllable switch, and comprises a second output crossbar switch, a second output port and a second input port;
• wherein
• the first digital signal processor and the second digital signal processor are connected by wirings;
• the first output crossbar switch is a single-directional switch configured to conduct a first internal signal to the first output port, so that the second digital signal processor receives the first internal signal via the second input port within a preset time;
• the second output crossbar switch is a single-directional switch configured to conduct a second internal signal to the second output port, so that the first digital signal processor receives the second internal signal via the first input port within the preset time;
• and
• the electrical system further comprises an isolation module configured to provide an electrical isolation between the first digital processor and the second digital signal processor, the first output port of the first digital signal processor is connected to the second input port of the second digital signal processor via the isolation module, and the first input port of the first digital signal processor is connected to the second output port of the second digital signal processor via the isolation module.