无电解电容永磁电机高功率因数控制策略

无电解电容驱动系统常采用体积小，寿命长的薄膜电容贮存网侧输入能量，但该拓扑结构易引起网侧输入功率和逆变器侧输出功率耦合的问题。针对无电解电容驱动电路中由于功率耦合导致的网侧谐波含量多和功率因数降低的问题，提出了一种基于二阶广义积分锁相环和比例积分谐振控制器的带相位补偿的逆变器输出功率控制策略以改善网侧电流品质。首先，通过分析无电解电容驱动系统的电路拓扑结构，明确无电解电容驱动系统高功率因数条件；其次，利用二阶广义积分锁相环获取网侧电压的相位与幅值信息，并利用基尔霍夫电流定律计算逆变器输出功率相位补偿角；然后，建立了基于比例积分谐振控制器的逆变器输出功率控制回路，将逆变器输出功率调节接近理想值。最后，对比实验结果验证了所提方案的有效性。

High-power-factor control strategy of electrolytic capacitor-less permanent magnet synchronous motor

In the non-electrolytic capacitors drive system, the film capacitors with small volume and long life are often used to store the input energy at the grid side. However, this topology easily leads to the problem that the grid-side input power and the inverter side output power are prone to coupling. In order to upgrade current quality of the grid, this paper proposes an inverter output power control strategy with phase compensation based on second-order generalized integral phase-locked loop and proportional integral resonant controller to depress the grid-net set harmonic content and increase the power factor. First of all, by analyzing the topology of the drive system, the high-power factor condition without electrolytic capacitor is clarified. Secondly, Secondly, the second order generalized integral phase-locked loop is used to obtain the phase and amplitude information of the grid side voltage, and the Kirchhoff current law is used to calculate the phase compensation angle of the inverter output power; And then, the inverter output power control loop based on the proportional integral resonance controller is established to adjust the output power of the inverter close to the ideal value. At last, the effectiveness of the control strategy is verified by the comparative experiments.