首页>
外国专利>
METHOD FOR BALANCING THE INTERMEDIATE CIRCUIT VOLTAGES IN A SELF-GUIDED, MULTI-LEVEL BLIND CURRENT COMPENSATOR AND SELF-GUIDED, MULTI-LEVEL BLIND CURRENT COMPENSATOR
METHOD FOR BALANCING THE INTERMEDIATE CIRCUIT VOLTAGES IN A SELF-GUIDED, MULTI-LEVEL BLIND CURRENT COMPENSATOR AND SELF-GUIDED, MULTI-LEVEL BLIND CURRENT COMPENSATOR
展开▼
机译:自导多电平盲电流补偿器和自导多电平盲电流补偿器中的中间电路平衡方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
The invention relates to a method for balancing the intermediate circuit voltages (u d l to u dn ) in a self-guided, multi-level blind current compensator (1) with a plurality of multi-quadrant rectifiers (2a to 2n) connected in series, wherein each multi-quadrant rectifier (2a to 2n) applies a pulse width modulated voltage that is made up of an equal portion (u v l to u vn ) of compensator voltage (u k ) imprinting the blind current (i k ) and an additional mains-frequency balancing voltage (u b ) having selectable amplitude. The sum of all balancing voltages (u b ) is thus zero and every balancing voltage (u b ) lies in phase or counter-phase to the fundamental oscillation of the blind current (i k ), dependent on whether the measured intermediate circuit voltage (u dl to u dn ) of the multi-quadrant rectifier (2a to 2n) is smaller or larger than a reference value (formula (I)) formed from the intermediate circuit voltages (u dl to u dn ). The invention also relates to a multi-level blind current compensator.
展开▼