Predictive Torque Control - A solution for mono inverter-dual parallel PMSM system

Abstract

The objective of this paper is to present a Predictive Torque Control (PTC) algorithm for controlling system composed by two Permanent Magnet Synchronous Motors (PMSM) operating in parallel, fed by a single power inverter. In this system, it is expected that both motors will get the same speed even if they have different conditions of load torque. The principle of PTC algorithm is considered as follows: a model of the system is used to predict the system behavior under a set of configurations of a power inverter, a cost function is built from the predicted values and their references and an optimal algorithm will be solved to find the best configuration to apply to the system in the next time step. Simulation results in Matlab/Simulink indicated that the algorithm (PTC) is well adapted for the synchronism of this system over a wide range of operations.

Optimal Current Control Methods for Single-Inverter Dual-Parallel-SPMSM with Different Parameters

“…If the 𝑖 𝑑2 of ( 6) is substituted for the 𝑖 𝑑2 of ( 8), then the latter can be expressed as an expression of 𝑖 𝑑1 only. Through the partial differentiation of this expression, as shown in (9), we can obtain the conditional expression for CLM. By rearranging (9) for 𝑖 𝑑1 , we obtain (10)(𝑖 𝑑1,𝐶 𝐿 𝑀 ).…”

“…Moreover, the greater the load difference between the two motors, the worse the system efficiency. Methods for solving these problems have been proposed (9) − (14) .…”

A new approach to Predictive Torque Control with Dual Parallel PMSM system

“…The proposed algorithm will be applied in predictive controller and compared with classic PTC in [2].…”

“…Classical Predictive Torque Control (PTC Classic) [2] evaluates the eight real voltage vectors of a three-phase twolevel inverter through a predefined cost function. In this function, the torque and flux are considered to optimize the operation of system.…”

Evaluation of the High Performance Indirect Field Oriented Controlled Dual Induction Motor Drive Fed by a Single Inverter using Type-2 Fuzzy Logic Control

“…Dive systems comprising multi-phase and multi-motor induction machines powered by a single inverter are studied in [15][16][17]. Unlike the three-phase multi-machine system, multi-phase multi-machine systems supplied by a single inverter can be connected in series [18,19] and in parallel [13,14,17,20], which allows independent control of each machine. In this paper, two induction machines connected in parallel powered by a single inverter as presented in Figure 1 [21] were considered.…”