Nghịch lưu tăng áp tựa khóa chuyển mạch một pha 5 bậc với độ lợi điện áp cao=Single phase five-level quasi-switch boost inverter with high voltage gain

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Tác giả: Đức Trí Đỗ, Vĩnh Thanh Trần, Ngọc Anh Trương

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Chuyên san Đo lường, Điều khiển và Tự động hóa, 2020

Mô tả vật lý: tr.45947

Bộ sưu tập: Metadata

ID: 479977

Thêm vào giỏ

In this paper, a new topology incorporating the quasi-switch boost network and the five-level cascade H-bridge inverter has been presented.By using one more inductor and one more capacitor compared to conventional quasi-switch boost network, the voltage gain, as well as thevoltage stress on power devices of an intermediate network, is significantly improved. In addition, the quality of the output voltage waveform is also improved by using a five-level cascade H bridge topology. The PWM control strategy for this topology is based on the carrierphase shift technique which ensures that each module of cascade form behaves as a three-level quasi-switch boost inverter. As a result, theoutput voltage of the converter has five-level. The shoot-through signal is inserted in the time interval, in which the output voltage of theinverter is zero in value to not affect the output voltage waveform. The simulation and experiment results are conducted to verify the accuracy of the introduced topology.Trong bài báo này, một cấu hình mới kết hợp giữa mạng nguồnkháng tựa khóa chuyển mạch và cấu hình nghịchlưunămbậc ghéptầng dạng cầuHđược trình bày. Bằng cách sử dụng thêm một cuộndây và một tụ điện so với mạng nguồn kháng tựa khóa chuyểnmạch truyền thống,độ lợiđiệnáp cũng nhưđiện áp đặt trên cáclinh kiệnđiện tử công suấtđược cải thiện mộtcáchđángkể. Ngoàira, chấtlượng dạngsóngđiệnápngõracũngđược cải thiện do sửdụng cấuhìnhnămbậc ghép tầng cầu H. Phươngphápđiều khiểnđộ rộng xung (PWM) cho cấu hình này dựa trên kỹ thuật dịch phasóngmang,điềunày đảm bảo mỗi module cầu H hoạtđộng nhưmột mạch nghịchlưutăngáptựa khóa chuyển mạch 3 bậc. Kết quảlà ngõ ra của bộ nghịch lưu có năm bậc điện áp. Tín hiệu ngắnmạchđược chèn vào khoảng thờigianmàđiện áp ngõ ra của mạchnghịchlưucógiátrị bằngzerođể không ảnhhưởngđến dạng sóngđiện áp ngõ ra. Kết quả mô phỏng và thực nghiệmđược xây dựngđể kiểm chứng cấuhìnhđược trình bày.

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