公开(公告)号：EP1304792A1

公开(公告)日：2003-04-23

申请号：EP01830664.7

申请日：2001-10-19

Applicant: STMicroelectronics S.r.l.

Inventor： Milazzotto, Antonio ,  Di Guardo, Mario ,  Cucuccio, Antonino ,  Di Marco, Francesco

IPC: H02M5/293

CPC classification number: H02M5/293

Abstract: The invention relates to a circuit device (1) for driving an AC electric load (3), of the type inserted between a terminal of an AC power supply line and a terminal of the electric load to be driven and including a generator (8) of PWM signals to be transferred to the load. This circuit (1) is an AC/AC converter adapted to power supply the load (3) from any level of the power supply line sinusoid and comprising first and second voltage driven switches (Z1, Z2), the first switch (Z1) to power supply the load (3) and the second switch (Z2) to enable loop-back of the current. The switches (Z1, Z2) always operate in a complementary manner, i.e. when the first switch (Z1) is on, the other (Z2) is off, and vice versa.

Abstract translation: 本发明涉及一种用于驱动AC电力负载（3）的电路装置（1），其中插入在AC电源线的端子和待驱动的电负载的端子之间的AC电负载（3）包括发电机（8） 的PWM信号传输到负载。 该电路（1）是一种AC / AC转换器，适于从任何级别的电源线正弦波电源提供负载（3），并且包括第一和第二电压驱动开关（Z1，Z2），第一开关（Z1）至 为负载（3）和第二个开关（Z2）供电以使电流回路。 开关（Z1，Z2）总是以互补方式操作，即当第一开关（Z1）接通时，另一个（Z2）断开，反之亦然。