Topology and control design of a sinusoidal very low frequency high voltage generator

Zhigang LIU; Guofeng LI; Ninghui WANG

Makale detayları

Topology and control design of a sinusoidal very low frequency high voltage generator

Yazarlar:

Zhigang LIU | Guofeng LI | Ninghui WANG

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2013 Vol.21 Issue 5, pp.1242-1259

Belge Tipi:

Makale

Yayın Tarihi:

4/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000743199

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

To reduce the volume and the structural complexity of a very low frequency   (VLF) high voltage (HV) generator, this paper introduces a novel sinusoidal   VLF HV generator with 2 high frequency HV (HFHV) transformers and 2   metal-oxide semiconductor field-effect transistor cascaded HV bridge arms.   Series-parallel resonant converter technology is applied to reduce the   impact of the distributed parameters, decreasing the power loss and the   volume of the transformer. Both the switching frequency and the duty cycle   are utilized as actuating variables to cope with the large ranges of output.   Simultaneously, the principle of segmental data processing is proposed to   obtain different steady-state operating points, greatly reducing the   calculation of the microcontroller unit (MCU), improving the accuracy of the   control strategy, and the system response time. As a result, the control   strategy is successfully achieved by the MCU dsPIC33FJ128MC706. The test of   the 35 kV/0.1 Hz VLF HV power supply is taken on a capacitor (1.5 m F),   which is equivalent to the cross-linked polyethylene cable in the electrical   characteristics. When the input voltage varies between 180 V and 250 V, the   accuracy of the sinusoidal VLF HV is 2%. The step change response time is   less than 120 m s when the output changes from no-load to full-load. The   total harmonic distortion is less than 1%, which meets the IEEE400.2   standard well. The total weight of the generator is less than 20 kg. The   results of the experiment verify the accuracy and feasibility of the control   theory and the topology.

 

To reduce the volume and the structural complexity of a very low frequency   (VLF) high voltage (HV) generator, this paper introduces a novel sinusoidal   VLF HV generator with 2 high frequency HV (HFHV) transformers and 2   metal-oxide semiconductor field-effect transistor cascaded HV bridge arms.   Series-parallel resonant converter technology is applied to reduce the   impact of the distributed parameters, decreasing the power loss and the   volume of the transformer. Both the switching frequency and the duty cycle   are utilized as actuating variables to cope with the large ranges of output.   Simultaneously, the principle of segmental data processing is proposed to   obtain different steady-state operating points, greatly reducing the   calculation of the microcontroller unit (MCU), improving the accuracy of the   control strategy, and the system response time. As a result, the control   strategy is successfully achieved by the MCU dsPIC33FJ128MC706. The test of   the 35 kV/0.1 Hz VLF HV power supply is taken on a capacitor (1.5 m F),   which is equivalent to the cross-linked polyethylene cable in the electrical   characteristics. When the input voltage varies between 180 V and 250 V, the   accuracy of the sinusoidal VLF HV is 2%. The step change response time is   less than 120 m s when the output changes from no-load to full-load. The   total harmonic distortion is less than 1%, which meets the IEEE400.2   standard well. The total weight of the generator is less than 20 kg. The   results of the experiment verify the accuracy and feasibility of the control   theory and the topology.

Makale detayları

Topology and control design of a sinusoidal very low frequency high voltage generator

Yazarlar: Zhigang LIU | Guofeng LI | Ninghui WANG

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2013 Vol.21 Issue 5, pp.1242-1259

Belge Tipi: Makale

Yayın Tarihi: 4/2013

Belge Dili: Türkçe

Document ID (Org No.): 2000743199

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Zhigang LIU | Guofeng LI | Ninghui WANG

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2013 Vol.21 Issue 5, pp.1242-1259

Belge Tipi:

Makale

Yayın Tarihi:

4/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000743199

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632