Sparq Systems Inc.

Omid Salari

Praveen Jain

Majid Pahlevaninezhad

Suzan Eren

Ryan Fernandes

Arpan Laha

Abhishek Awasthi

Abirami Kalathy

Systems and methods relating to controlling power from renewable power sources. There is provided a control system that uses a non-linear controller for controlling currents in a DC/AC inverter especially when the DC/AC inverter is providing PV power to a 3-phase motor when the system is in an off-grid mode. In on-grid mode, a power grid is coupled to the DC/AC inverter and the control system provides MPPT to provide PV power to the grid. In off-grid mode, the grid is not coupled to the DC/AC inverter. The non-linear controller is based on differentiable manifolds that are also Lie groups. In off-grid mode, this non-linear controller finds the correct phase and frequency for the inverter current for the motor. The frequency is the output of the Lie group-based controller and is generated based on the voltage and current vectors of the motor.

Systems and methods for controlling a DC/AC inverter for use with an electric motor or an AC grid

Systems and methods for use with renewable energy resources that provide power to an energy power grid or to one or more motor loads. A control system along with an energy storage/combiner block and a DC/AC inverter is used to condition DC power received from renewable energy sources. The control system receives current and voltage outputs from the inverter along with values indicating current and voltage outputs directly from the renewable energy sources. These are then used to estimate and control motor speed when the system is in the off-grid mode. In addition, the control system uses these inputs to provide the gate pulses that are used to control the three phase AC output power from the inverter.

Hybrid solar/motor drive inverter

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Kingston, Canada

Omid Salari