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| Influence on the Quality of Electric Energy Recovered by the Elevator Energy-feedback Unit |
| YAO Ze-hua1,WAN Jian-ru1,ZHANG Peng2,QIAN Jian-xiong3 |
1. Tianjin University, Tianjin 300072, China;
2. Shanghai Jiaotong University, Shanghai 200240, China;
3. China Special Equipment Inspection and Research Institute, Beijing 100013, China |
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Abstract Based on the investigations of the harm and the test methods of harmonic wave, the method of FFT is chosen to test the harmonic wave of voltage and current. Twelve typical elevators with different energy-feedback units are tested in the energy-feedback grid and the non-energy-feedback grid. Based on the test results, the harmonic characteristics of the feedback energy and the effect on the quality of the electric energy when the elevator energy-feedback unit are discussed. According to the results, the feedback energy of the elevator will cause harmonic pollution to the grid and influence the power quality.
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2013, Vol. 34 
