2results about How to "Short trace" patented technology

The invention discloses a voltage conversion device and a power supply system. The device comprises at least three-phase first voltage conversion units; each phase of first voltage conversion unit corresponds to a first bus capacitor and a second bus capacitor; a first end of the first voltage conversion unit is connected with the first bus, a second end of the first voltage conversion unit is connected with the second bus, and a third end of the first voltage conversion unit is an input end or an output end of the first voltage conversion unit; the first bus capacitor and the second bus capacitor are connected in series between the first bus and the second bus, the first bus capacitor and the second bus capacitor are connected in parallel with the first voltage conversion unit after being connected in series, and the first voltage conversion unit is used for conversion between direct current voltage and alternating current voltage. According to the technical scheme, the reliability of the three-level topological structure is improved.

The application discloses a power board, a motor driver and a brushless direct current motor driving system, and relates to the technical field of motor drivers, and aims at solving the problem that the motor driver is large in size and weight and cannot meet the requirements of the fields of aviation and spaceflight. The power board comprises a negative electrode connecting terminal, a three-phase inverter assembly and a current sensor assembly which are uniformly surrounded by the negative electrode connecting terminal. The motor driver comprises the power board provided in the technical scheme. The power board, the motor driver and the brushless direct current motor driving system are used for driving a brushless direct current motor.