1, broad-band low-frequency fundamental wave testing function.
Broadband means that it contains harmonics, and low frequency means that the fundamental frequency is very low, as low as 1Hz.
2. Wide current test range.
The no-load current of permanent magnet motor is very small. The no-load current of large-capacity units is only about 0.005~0.0 1 times of the rated current. It is also necessary to test the overload current. The maximum current is often 200~300 times of the minimum current.
In a word, the broadband power test system developed by Hunan Yinhe Electric Co., Ltd. can meet the needs of frequency conversion test of permanent magnet wind turbine test bench. The test system has been adopted by Goldwind Technology, Dongfang Electric, Xiangtan Electric, China South Locomotive and other large domestic wind power enterprises.