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| 估计网侧电压的PWM整流器无交流电压传感器控制 |
| The Design of the Automatic Production. Line for Sewing Cloth Long Bag |
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| DOI：10.3969/j.issn.1671-5322.2012.03.014 |
| 中文关键词: pwm整流器 滑模观测器 谐振式滤波器 无交流电压传感器 |
| 英文关键词: pulse width modulation rectifier sliding mode observer resonant-type observer AC voltage sensorless |
| 基金项目: |
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| 摘要点击次数: 4429 |
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| 中文摘要: |
| 根据PWM整流器在两相静止坐标系下的数学模型，提出一种直接估计网侧电压用以实现无交流电压传感器控制的方法。利用滑模观测器（SMO）重构网侧电压并详细分析了观测器的原理和设计步骤，采用谐振式滤波器（RTO）从等效控制信号中提取电压信息，避免了使用低通滤波器带来的信号延时问题。为了削弱系统抖振，将电压估测值作为反馈引入观测器电流模型中，构造一种新型滑模观测器。仿真和实验结果表明使用该观测器的PWM整流器具有良好的动静态响应，验证了所提出的无交流电压传感器控制策略的有效性和准确性。 |
| 英文摘要: |
| According to the mathematical model of PWM rectifier in two-phase static coordinate system,this paper proposed a direct estimation grid side voltage method to realize the AC voltage sensorless control.The sliding-mode observer(SMO) was used to reconstruction grid side voltage.The principle and design steps of observer were analyzed in detail.A resonant-type observer(RTO) was used to extract voltage information from equivalent control signal,thus avoiding the signal delay problem brought by using low pass filter.In order to weaken the chattering problem,the voltage estimated value was used as a feedback in the current model and,a new type of the sliding-mode observer was constructed.Simulation and experimental results show that PWM rectifier based on the proposed observer has good dynamic/static response and verifies the validity and feasibility of the proposed AC voltage sensorless control strategy. |
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