The invention discloses a drive and
control integration system for a
tractor of an
elevator and a working method of the drive and
control integration system. The
system comprises a three-phase alternating-current supply, a rectifying module, a circuit
capacitor, an
inverter module, a first protective circuit module, a second protective circuit module, a
tractor module, a DSP (
digital signal processor) and CPLD (
complex programmable logic device) control module and a standard
communication interface. According to the drive and
control integration system, a DSP serves as a master control
chip to take charge of the control of the
tractor and the decision and control of the whole system; a CPLD serves as an assist control
chip to take charge of the preprocessing of a great number of logic signals; the pressure of the DPS is reduced; and the reliability and the stability of the system are improved. On the basis of the
vector control of the permanent
magnet synchronous tractor, a
current loop controller adopts a multimode
control algorithm, and a speed ring controller adopts a
control algorithm based on a disturbance observator. With the adoption of the drive and control integration system, the safety of a
control system of the
elevator is improved, and the drive and control integration system has the characteristics of compact structure, small size, convenience in maintenance and the like.