Direct Power Model Predictive Control Method for DC-Side Sensor-Less Single-Phase Cascaded H-Bridges Photovoltaic Inverters
In order to reduce the complexity of photovoltaic generation system, a direct power model predictive control method suitable for DC-side sensor-less photovoltaic inverters is presented in this paper. Based on the idea of serial calculation, each H-bridge is considered as a single inverter. In the me...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
State Grid Energy Research Institute
2022-02-01
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| Series: | Zhongguo dianli |
| Subjects: | |
| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202005068 |
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| Summary: | In order to reduce the complexity of photovoltaic generation system, a direct power model predictive control method suitable for DC-side sensor-less photovoltaic inverters is presented in this paper. Based on the idea of serial calculation, each H-bridge is considered as a single inverter. In the meantime, when the optimal modulation function is being calculated for each H-bridge, the DC-side capacitor voltage of each H-bridge is reconstructed using the increment of output voltage of inverters. In addition, a term about the error of capacitor voltage is embedded into the optimal modulation function to keep capacitors’ voltages balance. After building a system model through Matlab/Simulink, the performance of the presented method is verified. |
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| ISSN: | 1004-9649 |