Development of PCS to utilize differential pressure energy in district heating systems with reduced DC-link voltage variation

被引：6

作者：

Bak, Yeongsu ^{[1
]}

Lee, Kyo-Beum ^{[1
]}

机构：

[1] Ajou Univ, Dept Elect & Comp Engn, Suwon, South Korea

来源：

JOURNAL OF POWER ELECTRONICS | 2020年 / 20卷 / 04期

关键词：

District heating system; Back-to-back converter; Differential pressure control valve; DC-link voltage variation; Permanent-magnet synchronous generator; MODEL-PREDICTIVE CONTROL; MATRIX CONVERTER; VALVE; MINIMIZATION; REDUCTION;

D O I：

10.1007/s43236-020-00091-x

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper proposes a power conversion system (PCS) to utilize the differential pressure (DP) energy in district heating systems with reduced DC-link voltage variation. A differential pressure control valve (DPCV) is usually used to regulate pressure for heat transmission to remote areas in district heating systems. However, there is a high probability of malfunctions and failures of the DPCV, due to cavitation, since high-pressure fluids are used in district heating systems. Therefore, a PCS for utilizing DP energy in the district heating system replacing the DPCV is proposed in this paper. In addition, the DC-link voltage of the PCS greatly fluctuates when a sudden change occurs in a hydraulic turbine. It is effectively relieved by using the feed-forward control method. The effectiveness of the PCS for utilizing the DP energy in district heating systems with reduced DC-link voltage variation is verified by simulation and experimental results.

引用

页码：1109 / 1118

页数：10

共 33 条

[1] DC-Link Capacitance Minimization in T-Type Three-Level AC/DC/AC PWM Converters [J].