Multizone frequency-width-pulse integrating regulators with relay algorithm

The basic structure and operating principle of the multizone integrating regulator are considered in the paper. The regulator is based on multizone frequency-width-pulse modulation. The virtual model of the multizone regulator is made in the MATLAB + Simulink program. Time diagrams of the regulator are constructed with a virtual model. Main equations and static characteristics of multizone the regulator, in particular, amplitude and modulation characteristics are given. Advantages and disadvantages of the regulators are mentioned. Two ways of relay algorithm are offered in paper. Relay elements are parts of the regulator. In particular, multizone regulator with self-reactance and unit-counting relay algorithm are shown. The main advantage of relay algorithms is the ability to provide a uniform distribution of the power loss between the output power keys. It enables improvement of energy performance of the control system and of its reliability. The structures of multizone regulators with relay algorithms and time diagrams of the signals are given. Example of the temperature control system in the electric heating installation based on the multi-zone AC regulator is provided. The “rotating” thermal field is generated in the “relay” mode of electric heaters. As a result, uneven temperatures in the heating installation are reduced by at least 3-5 times. This paper can be interesting for power and information electronics, electric drive and process automation specialists.