Question 1: Mismatch between the generator set and the switch-mode power supply can lead to unstable output voltage and increased vibration. Huatai analyzes that for instance, if the generator's no-load voltage is 230V, the output voltage may rise to 250V after the switch-mode power supply's load is increased. Our maintenance staff might investigate the generator set for the cause. The primary reason for this condition is often a mismatch between the load and the generator set. Jinfēi provides an analysis. The rectifier modules of the high-frequency switch-mode power supply system are all capacitive loads. A capacitive load means that the load current leads the load voltage (power factor is leading). This current, when added to the excitation current of the generator's excitation system, increases the generator's excitation current. The auxiliary magnetic effect produced causes the generator's output voltage to rise. The higher the load current, the greater the voltage rise and the more severe the generator vibration.
Question 2: Issues with generator output power deficiency. 36V aviation power supply, 400Hz variable frequency power supply, 115/200V power supply, 27V DC power supply, 400Hz power supply, aviation power supply
For instance, a 50A module is considered as 60V*50A = 3000VA during calculations. If a base station has two such modules, it necessitates a generator set with a rated power of 6000VA to support the load. This calculation method can lead to an insufficient output power issue. Due to the special nature of switching power supplies (being capacitive loads), a larger power supply redundancy is required. As the rectifying module uses different brands, the generator capacity calculation is based on a 1:2 ratio. For example, a 6000VA generator set powering a 3000VA switching power supply (capacitive load), the remaining capacity of the generator can handle inductive or resistive loads, greatly improving the generator's output characteristics.
