模块化多电平换流器无锁相环控制策略
TM46; 电压源型换流器通常在同步旋转dq坐标系中建立控制系统模型。在此控制系统中，锁相环用于跟踪电网电压频率和相位变化，其跟踪精度决定了控制系统的动稳态性能。本文摒弃以往在dq坐标系建立控制器的方法，提出一种新的无锁相环的模块化多电平换流器控制策略，其中外环采用PI调节器，内环在两相静止αβ坐标系中采用PCI调节器。该控制策略无需知道电感的参数，而且不需锁相环也能实现零稳态误差地跟踪参考给定值。...
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| Published in | 电测与仪表 Vol. 51; no. 5; pp. 56 - 60 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
华东交通大学 电气与电子工程学院,南昌,330013
2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1390 |
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| Summary: | TM46; 电压源型换流器通常在同步旋转dq坐标系中建立控制系统模型。在此控制系统中，锁相环用于跟踪电网电压频率和相位变化，其跟踪精度决定了控制系统的动稳态性能。本文摒弃以往在dq坐标系建立控制器的方法，提出一种新的无锁相环的模块化多电平换流器控制策略，其中外环采用PI调节器，内环在两相静止αβ坐标系中采用PCI调节器。该控制策略无需知道电感的参数，而且不需锁相环也能实现零稳态误差地跟踪参考给定值。 |
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| Bibliography: | 23-1202/TH modular multilevel converter;high voltage direct current;phase lock loop;proportional complex integral;αβ coordinate frame LI Yun-feng, SONG Ping-gang, WANG Li-na （ College of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang 330013, China） Voltage source converter usually adopts dq synchronous rotating frame to establish control system model. The phase lock loop （ PLL） in the control system is used to track the changes of grid voltage and phase position, and its tracking performance determines the transient and steady performance of the control system. Instead of developing the controller in dq synchronous frame, this paper proposes a novel control strategy for modular multilevel converter without PLL, which uses PI regulator in outer loop and PCI regulator in stationaryαβcoordinate frame in inner loop. The proposed control strategy also can achieve zero steady-state error tracking for the given reference value without in-ductance value or PLL needed. |
| ISSN: | 1001-1390 |